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Find Addition to existing structure builders in Olney

Avatar for GaaJ

GaaJ

11711 Ash Rd
5.00(
2
)
Approved Pro

GaaJ

11711 Ash Rd
5.00(
2
)
Approved Pro
Customers say: Quick response
19 years of experience
Free onsite estimate

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"GAAJ’s team were truly professionals. They listened to our needs and made my grandmother’s vision of a room, a reality. They were passionate and went above and beyond with details on the construction. If you have any building needs, I highly recommend GAAJ!"

Stephanie K on August 2025

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"GAAJ’s team were truly professionals. They listened to our needs and made my grandmother’s vision of a room, a reality. They were passionate and went above and beyond with details on the construction. If you have any building needs, I highly recommend GAAJ!"

Stephanie K on August 2025


Avatar for Masonry Stonework

Masonry Stonework

12312 Garrison Forest Rd
5.00(
3
)
Approved Pro

Masonry Stonework

12312 Garrison Forest Rd
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 years of experience

We are a locally owned and operated company with over 22 years of industry experience. We value honesty and integrity in all aspects of our business. We offer a variety of Home Improvement services that are customizable to each individual project. We specialize in handyman/carpentry work and a variety of related service and repair projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"Great service and good work!"

Franklin F on February 2023

We are a locally owned and operated company with over 22 years of industry experience. We value honesty and integrity in all aspects of our business. We offer a variety of Home Improvement services that are customizable to each individual project. We specialize in handyman/carpentry work and a variety of related service and repair projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"Great service and good work!"

Franklin F on February 2023


Avatar for Long Creek Construction, LTD

Long Creek Construction, LTD

14207 Old Annapolis Rd
4.54(
16
)
Approved Pro

Long Creek Construction, LTD

14207 Old Annapolis Rd
4.54(
16
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

Our Mission Statement: Long Creek Construction, LTD, is to create long term relationships with our customers, suppliers and employees by demonstrating honesty and fairness. We strive for excellence in workmanship and service through friendliness and efficiency. Contact Us: 8am-8pm Eastern Time, Monday-Saturday Licensed, Bonded, and insured MHIC 129026; VA 2705189765; WDC 420214000157 Languages are English and Spanish Our Experience: Our management team has the combined experience of 25 years installing windows and doors, 22 years building decks and fences, 10 years doing hardscape, (ex. patios), 8 years in the new home building industry, and 10 years building sunrooms and additions. We also have experience in many other miscellaneous construction fields. But, don't trust us just because of our experience, try us for yourself and let us prove to you what we can do!

"Amazing job! Carlos and his team of experts went the extra mile to ensure that I got exactly what I wanted. Carlos reviewed details of the contract with me and we worked together to make adjustments if I had minor changes during the remodel. Long Creek construction workers, plumber, and electrician were timely, efficient, and consistently worked M-F and on some weekends. The result of Long Creekâ s work is a beautiful 600+ sq ft bedroom and bathroom. The bathroom is absolute nirvana: beautiful black matte porcelain tile floor, a black porcelain tile accent wall and shower accent, with luxury polished cream tiled walls with hints of black within. The shower has 6 shower heads, including 1 static rainfall, 1 hand-held shower head along with 4 side-wall mounted pressure point shower heads. The mirror has a defogger button and three-way light dimmingâ seriously? On either side of the mirror are beautiful sconce lights. The Woodbridge freestanding jetted tub is the final touch to give the bathroom a total spa-like atmosphere. And the vanity has spring-loaded closures for the cabinet doors and drawersâ no detail was overlooked. Long Creek did a spectacular job increasing the size of the primary bedroom from previously 200 sq ft to over 600 sq ft. It features two walk-in closets, beautiful solid hardwood floors, a high ceiling with recessed lighting with dimmers. The ceiling fan is a top-quality 8000+ CFM beauty. The bedroom has a large sitting room that breaks up the space very well and gives me and my husband the feeling that we are in an upscale hotel suite instead of a bedroom. Long Creek Construction is a professional, efficient, team of experts. They worked every dayâ even days with inclement weather. They donâ t waste time, they are incredibly accommodating, and they do things right! I am so impressed with the level of regular communication, exceptional quality of work, and timeliness of Long Creek Construction. I am extremely happy with the work and ! will definitely choose them again!"

Dee S on January 2024

Our Mission Statement: Long Creek Construction, LTD, is to create long term relationships with our customers, suppliers and employees by demonstrating honesty and fairness. We strive for excellence in workmanship and service through friendliness and efficiency. Contact Us: 8am-8pm Eastern Time, Monday-Saturday Licensed, Bonded, and insured MHIC 129026; VA 2705189765; WDC 420214000157 Languages are English and Spanish Our Experience: Our management team has the combined experience of 25 years installing windows and doors, 22 years building decks and fences, 10 years doing hardscape, (ex. patios), 8 years in the new home building industry, and 10 years building sunrooms and additions. We also have experience in many other miscellaneous construction fields. But, don't trust us just because of our experience, try us for yourself and let us prove to you what we can do!

"Amazing job! Carlos and his team of experts went the extra mile to ensure that I got exactly what I wanted. Carlos reviewed details of the contract with me and we worked together to make adjustments if I had minor changes during the remodel. Long Creek construction workers, plumber, and electrician were timely, efficient, and consistently worked M-F and on some weekends. The result of Long Creekâ s work is a beautiful 600+ sq ft bedroom and bathroom. The bathroom is absolute nirvana: beautiful black matte porcelain tile floor, a black porcelain tile accent wall and shower accent, with luxury polished cream tiled walls with hints of black within. The shower has 6 shower heads, including 1 static rainfall, 1 hand-held shower head along with 4 side-wall mounted pressure point shower heads. The mirror has a defogger button and three-way light dimmingâ seriously? On either side of the mirror are beautiful sconce lights. The Woodbridge freestanding jetted tub is the final touch to give the bathroom a total spa-like atmosphere. And the vanity has spring-loaded closures for the cabinet doors and drawersâ no detail was overlooked. Long Creek did a spectacular job increasing the size of the primary bedroom from previously 200 sq ft to over 600 sq ft. It features two walk-in closets, beautiful solid hardwood floors, a high ceiling with recessed lighting with dimmers. The ceiling fan is a top-quality 8000+ CFM beauty. The bedroom has a large sitting room that breaks up the space very well and gives me and my husband the feeling that we are in an upscale hotel suite instead of a bedroom. Long Creek Construction is a professional, efficient, team of experts. They worked every dayâ even days with inclement weather. They donâ t waste time, they are incredibly accommodating, and they do things right! I am so impressed with the level of regular communication, exceptional quality of work, and timeliness of Long Creek Construction. I am extremely happy with the work and ! will definitely choose them again!"

Dee S on January 2024


Avatar for East Coast Concrete LLC

East Coast Concrete LLC

7310 Ritchie Highway, Suite 200
4.26(
80
)
Approved Pro

East Coast Concrete LLC

7310 Ritchie Highway, Suite 200
4.26(
80
)
Approved Pro
1 years of experience
Free onsite estimate

East Coast Concrete LLC, proudly servicing Pasadena, MD and the surrounding areas. Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed.

"Fast response, fantastic results, and they had the job done in one day. Before leaving they checked to make sure everything was completed to my satisfaction. I would highly recommend them to anyone needing concrete work done. "

Robert H on September 2025

East Coast Concrete LLC, proudly servicing Pasadena, MD and the surrounding areas. Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed.

"Fast response, fantastic results, and they had the job done in one day. Before leaving they checked to make sure everything was completed to my satisfaction. I would highly recommend them to anyone needing concrete work done. "

Robert H on September 2025


Avatar for Abode Construction, LLC

Abode Construction, LLC

19570 Ridge Heights Drive
4.65(
10
)
Approved Pro

Abode Construction, LLC

19570 Ridge Heights Drive
4.65(
10
)
Approved Pro
Customers say: True professional
16 local quotes requested
23 years of experience

We are a veteran owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction! FREE ESTIMATES! ASK US ABOUT PRICE MATCHING!

"When I started down the path of remodeling my 2 outdated bathrooms, I had no idea what to expect. My two main criteria were fair price and good workmanship. Abode Construction delivered this and more! Scott provides top notch work, respectful and capable crew, quality customer care, and advice, all for a competitive price. His team, from the estimate to changes for the project through completion of the bathrooms, make the client feel valued. Did everything go as planned? Absolutely not. Some events were unavoidable (e.g. supply delays) but some could have been avoided. However, Scott made sure that we were whole at the end of the day and made good on his 100% guaranteed satisfaction. I now have two updated, modern bathrooms that we all LOVE! I will be using Abode Construction for future projects and highly recommend them to others."

Cathy H on March 2024

We are a veteran owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction! FREE ESTIMATES! ASK US ABOUT PRICE MATCHING!

"When I started down the path of remodeling my 2 outdated bathrooms, I had no idea what to expect. My two main criteria were fair price and good workmanship. Abode Construction delivered this and more! Scott provides top notch work, respectful and capable crew, quality customer care, and advice, all for a competitive price. His team, from the estimate to changes for the project through completion of the bathrooms, make the client feel valued. Did everything go as planned? Absolutely not. Some events were unavoidable (e.g. supply delays) but some could have been avoided. However, Scott made sure that we were whole at the end of the day and made good on his 100% guaranteed satisfaction. I now have two updated, modern bathrooms that we all LOVE! I will be using Abode Construction for future projects and highly recommend them to others."

Cathy H on March 2024


Avatar for River View

River View

101 North Main Street
4.64(
14
)
Approved Pro

River View

101 North Main Street
4.64(
14
)
Approved Pro
Super Service Award
Customers say: Quality work
184 local quotes requested
1 years of experience

At River View Construction, we pride ourselves on our exceptional renovations, which are characterized by a comprehensive range of services, a skilled team, and personalized solutions tailored to your unique needs. We are dedicated to providing quality assurance, proactive communication, and meticulous attention to detail, all while ensuring that your project is completed on time. Driven by our commitment to customer satisfaction, we invite you to let us turn your vision into reality. Request a quote today and experience the unmatched River View difference!

"We write this review as a sigh of relief now that our renovation project with River View is finally complete. The quality of the final work is excellent, and the construction crew, architect, and county inspector were all great to work with. The original crew we worked with, led by Edwin, were so hardworking, friendly, thorough, and fast. That's what really pushed us from 2 to 3 stars. However, the process getting here was frustrating and unnecessarily chaotic. Timeline & Communication Issues: Initial promise: We were clear that the renovation had to allow us to live in our home during construction and be completed before Christmas. Early communication: Our original project manager, Cris, was personable, and early communication seemed fine, if a bit informal and sometimes inappropriately personal. Major miscommunication: Near the holidays, we discovered that the plans submitted included cutting into the roof — something we explicitly said we didn’t want. This contradicted verbal assurances and caused major last-minute changes. Project Management Failures: Poor planning and oversight: Cris and the architect’s plan didn’t align with the construction work. We had to get involved directly with the county to fix errors. Paperwork errors: Incorrect submissions to the county added delays and confusion, which we had to monitor ourselves. Last-minute scramble: We were cleaning up dust on Christmas Eve due to these planning failures. Personnel Turnover & Lack of Handoff: Cris leaves the company: No proper handover to James, the new PM, who was unfamiliar with our project. Crew replaced: The original crew, who were great, were gone; new crew had no context or direction. James leaves: Another handoff with no context — the third PM had no idea about our project or its outstanding items. Escalation mishandled: When we raised our concerns with Kyle, the CEO, the response felt dismissive, with no accountability for the previous missteps. In summary, it's a beautiful end result... but we’re glad it’s over. The process left us frustrated, confused, and frankly, exhausted."

Brian M on April 2025

At River View Construction, we pride ourselves on our exceptional renovations, which are characterized by a comprehensive range of services, a skilled team, and personalized solutions tailored to your unique needs. We are dedicated to providing quality assurance, proactive communication, and meticulous attention to detail, all while ensuring that your project is completed on time. Driven by our commitment to customer satisfaction, we invite you to let us turn your vision into reality. Request a quote today and experience the unmatched River View difference!

"We write this review as a sigh of relief now that our renovation project with River View is finally complete. The quality of the final work is excellent, and the construction crew, architect, and county inspector were all great to work with. The original crew we worked with, led by Edwin, were so hardworking, friendly, thorough, and fast. That's what really pushed us from 2 to 3 stars. However, the process getting here was frustrating and unnecessarily chaotic. Timeline & Communication Issues: Initial promise: We were clear that the renovation had to allow us to live in our home during construction and be completed before Christmas. Early communication: Our original project manager, Cris, was personable, and early communication seemed fine, if a bit informal and sometimes inappropriately personal. Major miscommunication: Near the holidays, we discovered that the plans submitted included cutting into the roof — something we explicitly said we didn’t want. This contradicted verbal assurances and caused major last-minute changes. Project Management Failures: Poor planning and oversight: Cris and the architect’s plan didn’t align with the construction work. We had to get involved directly with the county to fix errors. Paperwork errors: Incorrect submissions to the county added delays and confusion, which we had to monitor ourselves. Last-minute scramble: We were cleaning up dust on Christmas Eve due to these planning failures. Personnel Turnover & Lack of Handoff: Cris leaves the company: No proper handover to James, the new PM, who was unfamiliar with our project. Crew replaced: The original crew, who were great, were gone; new crew had no context or direction. James leaves: Another handoff with no context — the third PM had no idea about our project or its outstanding items. Escalation mishandled: When we raised our concerns with Kyle, the CEO, the response felt dismissive, with no accountability for the previous missteps. In summary, it's a beautiful end result... but we’re glad it’s over. The process left us frustrated, confused, and frankly, exhausted."

Brian M on April 2025


Avatar for Elevate Design Build, LLC

Elevate Design Build, LLC

1742 Underwood Rd
4.80(
25
)
Approved Pro

Elevate Design Build, LLC

1742 Underwood Rd
4.80(
25
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
32 local quotes requested

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"All the people at Elevate Design and Build were amazing and a pleasure to work with. We doubled the size of our house including tripling the size of the kitchen, knocking out walls to create an open floor plan and added a three car garage with home office over the garage. They even recommended modifications to our original blueprints which were excellent. All their workers friendly and did a first class job. Went totally above and beyond our expectations. One year later we have not had one single problem with any of the work. Total integrity. If any issue came up, the company absorbed the cost - not the customer. Everything they did was done perfectly. We didn't have a single issue or complaint during the entire process. I give them my highest personal recommendation. I would never use anyone else."

Stephen M on August 2024

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"All the people at Elevate Design and Build were amazing and a pleasure to work with. We doubled the size of our house including tripling the size of the kitchen, knocking out walls to create an open floor plan and added a three car garage with home office over the garage. They even recommended modifications to our original blueprints which were excellent. All their workers friendly and did a first class job. Went totally above and beyond our expectations. One year later we have not had one single problem with any of the work. Total integrity. If any issue came up, the company absorbed the cost - not the customer. Everything they did was done perfectly. We didn't have a single issue or complaint during the entire process. I give them my highest personal recommendation. I would never use anyone else."

Stephen M on August 2024


Avatar for Managed Renovations

Managed Renovations

3302 Camalier Drive
5.00(
16
)
Approved Pro

Managed Renovations

3302 Camalier Drive
5.00(
16
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 local quotes requested

Managed Renovations engages with our clients using a couple different business models depending on their needs, preferences, and level of desired participation in some of the required tasks involved with most projects. Some of our clients choose to use our unique construction management services business model to build their project that is distinctive from the typical fixed-price general contractor (GC) approach to construction. For those clients we provide fee-based construction management consulting services to schedule, manage (on-site), and review all the work that our clients choose to have us handle for the project. We connect and contract our clients with our seasoned collection of licensed and insured tradesmen and subcontractors (and our own in-house carpenters) that will provide each of their fixed price costs. Alternatively, some of our clients prefer to have their project built using a typical fixed-price general contractor (GC) approach to construction.

"We recently had our kitchen remodeled by Managed Renovations. The experienceâ from start to finishâ was nothing short of amazing and the finished kitchen is spectacular, exceeding our expectations. The Managed Renovations team, Michael and Natalie, and their subcontractorsâ carpenters, electricians, plumbers, and floor installersâ displayed a level of professionalism, craftsmanship, and attention to detail that was extraordinary. They turned a small, poorly designed 1970s kitchen into a large, beautiful, functional space that is now the heart of our home. Although the project involved demolishing walls and removing the existing cabinets, appliances, and flooring (and replacing them with new cabinets, appliances, and flooring), they accomplished this with minimal disruption to our lives, always leaving our home and the work area clean at the end of the day. Managed Renovations communicated with us throughout, (we could also track every aspect of the project online), making sure we were comfortable with every decision. Their recommendations, whether about design elements or vendors, were always â spot on.â There were no surprises. They delivered what they promised when it was promised, completing our kitchen on time and without any unanticipated costs. Managed Renovations' dedication to excellence and customer satisfaction is truly unmatched. If youâ re looking for a general contractor who will deliver outstanding results, look no further than Managed Renovations."

David F on July 2024

Managed Renovations engages with our clients using a couple different business models depending on their needs, preferences, and level of desired participation in some of the required tasks involved with most projects. Some of our clients choose to use our unique construction management services business model to build their project that is distinctive from the typical fixed-price general contractor (GC) approach to construction. For those clients we provide fee-based construction management consulting services to schedule, manage (on-site), and review all the work that our clients choose to have us handle for the project. We connect and contract our clients with our seasoned collection of licensed and insured tradesmen and subcontractors (and our own in-house carpenters) that will provide each of their fixed price costs. Alternatively, some of our clients prefer to have their project built using a typical fixed-price general contractor (GC) approach to construction.

"We recently had our kitchen remodeled by Managed Renovations. The experienceâ from start to finishâ was nothing short of amazing and the finished kitchen is spectacular, exceeding our expectations. The Managed Renovations team, Michael and Natalie, and their subcontractorsâ carpenters, electricians, plumbers, and floor installersâ displayed a level of professionalism, craftsmanship, and attention to detail that was extraordinary. They turned a small, poorly designed 1970s kitchen into a large, beautiful, functional space that is now the heart of our home. Although the project involved demolishing walls and removing the existing cabinets, appliances, and flooring (and replacing them with new cabinets, appliances, and flooring), they accomplished this with minimal disruption to our lives, always leaving our home and the work area clean at the end of the day. Managed Renovations communicated with us throughout, (we could also track every aspect of the project online), making sure we were comfortable with every decision. Their recommendations, whether about design elements or vendors, were always â spot on.â There were no surprises. They delivered what they promised when it was promised, completing our kitchen on time and without any unanticipated costs. Managed Renovations' dedication to excellence and customer satisfaction is truly unmatched. If youâ re looking for a general contractor who will deliver outstanding results, look no further than Managed Renovations."

David F on July 2024


Avatar for Omar's General Contracting

Omar's General Contracting

3705 Plyers Mill Rd
4.13(
186
)
Approved Pro

Omar's General Contracting

3705 Plyers Mill Rd
4.13(
186
)
Approved Pro
Customers say: Quality work
155 local quotes requested
37 years of experience

Family own business with 25 + years of experience, our goal is 100% customer satisfaction. Is a trusted company for the best remodeling and handyman services for home. Open since 1988, we have been providing quality general contractor work at affordable prices. Our company is led by experienced professional experienced. We have earned a reputation for being efficient craftsmen who are knowledgeable in all areas of construction and renovations.

"They were responsive and professional. I'm happy with the result."

Sesi A on September 2025

Family own business with 25 + years of experience, our goal is 100% customer satisfaction. Is a trusted company for the best remodeling and handyman services for home. Open since 1988, we have been providing quality general contractor work at affordable prices. Our company is led by experienced professional experienced. We have earned a reputation for being efficient craftsmen who are knowledgeable in all areas of construction and renovations.

"They were responsive and professional. I'm happy with the result."

Sesi A on September 2025


Avatar for Top Remodeling

Top Remodeling

1620 E Jefferson St, PL14
5.00(
20
)
Approved Pro

Top Remodeling

1620 E Jefferson St, PL14
5.00(
20
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
183 local quotes requested

Top Remodeling is a Rockville remodeling contractor providing residential homeowners with the highest quality remodeling services. We provide professional remodeling services, including kitchen remodeling, bathroom remodeling, ADU construction, and more. In addition, we help you with design, planning, permit, and construction process. We take great pride in our top-notch remodeling services in Rockville and ensure that every project we do turns out perfectly.

"Our place had good bones but didn’t work for our daily life. Every room felt cut off from the next. Ben and Teddy from Top Remodeling sat with us and came up with a better layout without changing the size of the home. They moved the hallway, opened the living area, and added a custom touch in almost every room. They rebuilt the inside from the studs and used solid-core doors and clean finishes. We went with soft white walls, bronze handles, and natural maple cabinets. Now, it all feels open and calm. Every room has a purpose."

Serenity H on June 2025

Top Remodeling is a Rockville remodeling contractor providing residential homeowners with the highest quality remodeling services. We provide professional remodeling services, including kitchen remodeling, bathroom remodeling, ADU construction, and more. In addition, we help you with design, planning, permit, and construction process. We take great pride in our top-notch remodeling services in Rockville and ensure that every project we do turns out perfectly.

"Our place had good bones but didn’t work for our daily life. Every room felt cut off from the next. Ben and Teddy from Top Remodeling sat with us and came up with a better layout without changing the size of the home. They moved the hallway, opened the living area, and added a custom touch in almost every room. They rebuilt the inside from the studs and used solid-core doors and clean finishes. We went with soft white walls, bronze handles, and natural maple cabinets. Now, it all feels open and calm. Every room has a purpose."

Serenity H on June 2025

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FAQs for addition to existing structure building service projects in Olney, MD

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The Olney, MD homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.