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Find Addition to existing structure builders in Harwich

Avatar for HSO Contracting, LLC

HSO Contracting, LLC

PO Box 1117
5.00(
10
)
Approved Pro

HSO Contracting, LLC

PO Box 1117
5.00(
10
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
10 years of experience

HSO Contracting, LLC, is a second generation company who has always had a lively passion for art, design, and creation. From a young age, Hans Spatzeck Olsen would build anything from tree forts to toy trucks to underground tunnels. Hans' role models was his father, a foreman in the construction industry. For the next few years, he further developed his skills. Give us a call today.

"Just the best, amazingly talented crew, and I’m pretty picky. They came highly recommended and I won’t use anyone else if I have any future projects. Also, just really nice to deal with and I love that. "

Missy C on August 2025

HSO Contracting, LLC, is a second generation company who has always had a lively passion for art, design, and creation. From a young age, Hans Spatzeck Olsen would build anything from tree forts to toy trucks to underground tunnels. Hans' role models was his father, a foreman in the construction industry. For the next few years, he further developed his skills. Give us a call today.

"Just the best, amazingly talented crew, and I’m pretty picky. They came highly recommended and I won’t use anyone else if I have any future projects. Also, just really nice to deal with and I love that. "

Missy C on August 2025


Avatar for Capefort Custom Carpentry

Capefort Custom Carpentry

101 Lietrim Cir
5.00(
19
)
Approved Pro

Capefort Custom Carpentry

101 Lietrim Cir
5.00(
19
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Capefort Custom Carpentry is your number-one choice for your high-end carpentry project! We are a team of experts who work on striking projects with great care. Custom Wine Cellars, Kichen Cabinets installation and fabrication, we offer 3D plans and a lot more.

"Wonderful experience with company owner and installation team. Would â  highlyâ  recommend Capefort Custom Carpentry. Professional, very responsive and extremely willing to make us happy! Their work is amazing!"

Paul J on May 2024

Capefort Custom Carpentry is your number-one choice for your high-end carpentry project! We are a team of experts who work on striking projects with great care. Custom Wine Cellars, Kichen Cabinets installation and fabrication, we offer 3D plans and a lot more.

"Wonderful experience with company owner and installation team. Would â  highlyâ  recommend Capefort Custom Carpentry. Professional, very responsive and extremely willing to make us happy! Their work is amazing!"

Paul J on May 2024


Frank Vitale

5 Lynch Lane
4.26(
21
)
Approved Pro

Frank Vitale

5 Lynch Lane
4.26(
21
)
Approved Pro
Customers say: Quality work
42 years of experience
Free onsite estimate

Frank Vitale has been serving Cape Cod homeowners for over twenty five years. From the permitting process through project completion our goal is to satisfy our customer�s needs. Our attention to detail and pride in our craftsmanship combined with years of experience are our strongest assets. We have learned that integrity, honesty and open communication between parties makes for the best working environment for everyone. On each project, whether large or small, we listen to our customer's wishes and work closely with them to deliver the results envisioned. Every job is important to us.

"Frank and his helper were efficient and methodical. We had some rain delays but pleased with quality of the work"

Cathy S on July 2021

Frank Vitale has been serving Cape Cod homeowners for over twenty five years. From the permitting process through project completion our goal is to satisfy our customer�s needs. Our attention to detail and pride in our craftsmanship combined with years of experience are our strongest assets. We have learned that integrity, honesty and open communication between parties makes for the best working environment for everyone. On each project, whether large or small, we listen to our customer's wishes and work closely with them to deliver the results envisioned. Every job is important to us.

"Frank and his helper were efficient and methodical. We had some rain delays but pleased with quality of the work"

Cathy S on July 2021


Avatar for Outermost Building & Renovations, Inc.

Outermost Building & Renovations, Inc.

3 Towhee Lane
4.95(
10
)
Approved Pro

Outermost Building & Renovations, Inc.

3 Towhee Lane
4.95(
10
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
10 local quotes requested

Here at Outermost Building & Renovations, Inc., 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!

"Ben Dill worked with us in turning a garage loft into a functional, fully built-out room with bath. He is a creative craftsman who, with his team, did a beautiful job on the project. He is both easy-going and professional and clearly has a passion for his work. We appreciated his suggestions on many of the myriad details, particularly in relation to materials and finishing touches. He came in on budget and communicated regularly for clarification of plans when necessary. We enthusiastically recommend Ben and his team at Outermost Building & Renovations!"

B A on April 2025

Here at Outermost Building & Renovations, Inc., 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!

"Ben Dill worked with us in turning a garage loft into a functional, fully built-out room with bath. He is a creative craftsman who, with his team, did a beautiful job on the project. He is both easy-going and professional and clearly has a passion for his work. We appreciated his suggestions on many of the myriad details, particularly in relation to materials and finishing touches. He came in on budget and communicated regularly for clarification of plans when necessary. We enthusiastically recommend Ben and his team at Outermost Building & Renovations!"

B A on April 2025


Daniel McGrath

312 Camp Street
5.00(
2
)
Approved Pro

Daniel McGrath

312 Camp Street
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 years of experience

Daniel McGrath specializes in residential and commercial addition and remodeling projects. We take great pride in the quality of our work and customer service is our top priority. We look forward to working for you.

"Dan has done multiple projects around my home and his quality is excellent, his service is reliable, and I fully trust him with any repair or remodel. I am planning on using Dan for all my future projects."

BRIAN V on November 2024

Daniel McGrath specializes in residential and commercial addition and remodeling projects. We take great pride in the quality of our work and customer service is our top priority. We look forward to working for you.

"Dan has done multiple projects around my home and his quality is excellent, his service is reliable, and I fully trust him with any repair or remodel. I am planning on using Dan for all my future projects."

BRIAN V on November 2024


Capizzi Home Improvement, Inc.

1645 Newtown Road
4.20(
41
)
Approved Pro

Capizzi Home Improvement, Inc.

1645 Newtown Road
4.20(
41
)
Approved Pro
Customers say: Quality work
35 local quotes requested
49 years of experience

We have served thousands of homes on Cape Cod since 1976. From concept to completion, Capizzi Home Improvement has the experience to handle any custom home renovation whether it is interior or exterior. We are a trusted full-service home improvement and remodeling company serving Cape Cod and the South Shore.

"After many years of Indecision we recently concluded it was time to put in a new kitchen. From cabinets, floors, walls, ceilings, appliances and finally painting - the works!!! We chose Capizzi Home Improvement Company. We had heard they were excellent and had a great reputation for customer satisfaction. We had no idea of the scope of the job and all the work they would have to accomplish. Needless to say this was a very smart choice on our part. From the start there was our designer Diana then to the Caroenters, Jimmy and Dave, the Electricians Dave and Andrew, the Painters Joshua, Jesus and Freddie and the Plumbers Bill and Charlie - all contracted through Capizzi. All were fantastic at their trades. Very professional and knew what they were doing. All of the above coordinated through Gary who managed it all! I would recommend this crew from top to bottom. What a great job they all did! Super, super, super. Kudos to all! P.S. Highly Recommended!!!"

Larry A on October 2023

We have served thousands of homes on Cape Cod since 1976. From concept to completion, Capizzi Home Improvement has the experience to handle any custom home renovation whether it is interior or exterior. We are a trusted full-service home improvement and remodeling company serving Cape Cod and the South Shore.

"After many years of Indecision we recently concluded it was time to put in a new kitchen. From cabinets, floors, walls, ceilings, appliances and finally painting - the works!!! We chose Capizzi Home Improvement Company. We had heard they were excellent and had a great reputation for customer satisfaction. We had no idea of the scope of the job and all the work they would have to accomplish. Needless to say this was a very smart choice on our part. From the start there was our designer Diana then to the Caroenters, Jimmy and Dave, the Electricians Dave and Andrew, the Painters Joshua, Jesus and Freddie and the Plumbers Bill and Charlie - all contracted through Capizzi. All were fantastic at their trades. Very professional and knew what they were doing. All of the above coordinated through Gary who managed it all! I would recommend this crew from top to bottom. What a great job they all did! Super, super, super. Kudos to all! P.S. Highly Recommended!!!"

Larry A on October 2023


Avatar for L.L. Vigers Home Improvement

L.L. Vigers Home Improvement

5 Chartwell Drive
4.50(
10
)
Approved Pro

L.L. Vigers Home Improvement

5 Chartwell Drive
4.50(
10
)
Approved Pro
Customers say: Quick response
41 years of experience
Free onsite estimate

With over 40 years of experience, we proudly serve Cape Cod and Southeastern Massachusetts, offering expert craftsmanship and reliable service for homeowners who want the job done right. We specialize in new builds, home additions, and high-quality renovations. Our team is fully licensed and insured, and we're known for being easy to work with, respectful of your home, and committed to getting every detail just right.

"Laura and her team are amazing! They did fast, high quality work at a price that no one else could beat. I will be using her services for all future projects"

Cleo M on June 2025

With over 40 years of experience, we proudly serve Cape Cod and Southeastern Massachusetts, offering expert craftsmanship and reliable service for homeowners who want the job done right. We specialize in new builds, home additions, and high-quality renovations. Our team is fully licensed and insured, and we're known for being easy to work with, respectful of your home, and committed to getting every detail just right.

"Laura and her team are amazing! They did fast, high quality work at a price that no one else could beat. I will be using her services for all future projects"

Cleo M on June 2025


Avatar for Tatra Building Company, Inc.

Tatra Building Company, Inc.

1268 MA-28
4.81(
13
)
Approved Pro

Tatra Building Company, Inc.

1268 MA-28
4.81(
13
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
20 years of experience

Tatra Building Company provides general construction services for Cape Cod and South Shore area. We are committed to excellence, offering years of experience and fast, friendly service. Bridging design, construction and mechanical services, we deliver the best product, value and price. Shop around and then give us the call last, you will be glad you did. From a simple task like new electrical service, water heater or bathroom remodeling, to a new home or business property design and construction. Really..... Superior quality, attention, best price, forever relationship

"These people are HIGHLY professional and do the work RIGHT AWAY! Very reasonable prices! Would hire again!"

Barbara T on December 2024

Tatra Building Company provides general construction services for Cape Cod and South Shore area. We are committed to excellence, offering years of experience and fast, friendly service. Bridging design, construction and mechanical services, we deliver the best product, value and price. Shop around and then give us the call last, you will be glad you did. From a simple task like new electrical service, water heater or bathroom remodeling, to a new home or business property design and construction. Really..... Superior quality, attention, best price, forever relationship

"These people are HIGHLY professional and do the work RIGHT AWAY! Very reasonable prices! Would hire again!"

Barbara T on December 2024


Avatar for Luciano & Son Landscape Mntnc

Luciano & Son Landscape Mntnc

305 Commerce Park
5.00(
6
)
Approved Pro

Luciano & Son Landscape Mntnc

305 Commerce Park
5.00(
6
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
78 local quotes requested

Founded in the year 2000, we are a professional landscape company located in Chatham. The owner, Paul Luciano, has been in the landscaping field for over 30 years. We employ roughly 20 seasonal employees. We carry liability insurance and workman's compensation insurance and state unemployment insurance. The company has two landscaping divisions: Maintenance and Construction, making it possible to both install and maintain high quality landscapes. We offer seasonal maintenance services. DBA: Luciano & Son Landscape Maintenance & Construction. Additional Email: info@lucianoandson.com.

Founded in the year 2000, we are a professional landscape company located in Chatham. The owner, Paul Luciano, has been in the landscaping field for over 30 years. We employ roughly 20 seasonal employees. We carry liability insurance and workman's compensation insurance and state unemployment insurance. The company has two landscaping divisions: Maintenance and Construction, making it possible to both install and maintain high quality landscapes. We offer seasonal maintenance services. DBA: Luciano & Son Landscape Maintenance & Construction. Additional Email: info@lucianoandson.com.


Avatar for Wallys Landscaping & Masonry LLC

Wallys Landscaping & Masonry LLC

5.00(
7
)
Approved Pro

Wallys Landscaping & Masonry LLC

5.00(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
167 local quotes requested

Locally owned and owner operated with over 20 years of experience. We strive to meet customer satisfaction using top notch craftsmen and attention to detail in every project. Masonry and Landscaping construction, Outdoor living spaces, Tree service, yard maintenance and clean ups. Land clearing and grading and beyond.

"You can't get better than Wally in terms of quality, professionalism, and consistency. He removed all the sand in our yard, filled it with loam, spread seed, and built a brand new stone patio. He took the time to explain everything to us and ways to improve the project, but NOT for the cost. He helped us save money every step of the way. For example, he showed us where water was pooling and how it needed to be diverted away from the patio, which he did for no extra cost! He showed up every day, all day, until the tasks were done and beyond perfect. You can’t believe the time, effort, and care he puts into these projects. He genuinely cared that we were happy and cares about his reputation. This care is evident in the quality of his completed projects. He’s also just super nice and a pleasure to work with!"

Rachel G on January 2025

Locally owned and owner operated with over 20 years of experience. We strive to meet customer satisfaction using top notch craftsmen and attention to detail in every project. Masonry and Landscaping construction, Outdoor living spaces, Tree service, yard maintenance and clean ups. Land clearing and grading and beyond.

"You can't get better than Wally in terms of quality, professionalism, and consistency. He removed all the sand in our yard, filled it with loam, spread seed, and built a brand new stone patio. He took the time to explain everything to us and ways to improve the project, but NOT for the cost. He helped us save money every step of the way. For example, he showed us where water was pooling and how it needed to be diverted away from the patio, which he did for no extra cost! He showed up every day, all day, until the tasks were done and beyond perfect. You can’t believe the time, effort, and care he puts into these projects. He genuinely cared that we were happy and cares about his reputation. This care is evident in the quality of his completed projects. He’s also just super nice and a pleasure to work with!"

Rachel G on January 2025

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FAQs for addition to existing structure building service projects in Harwich, MA

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 Harwich, MA 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.

  • A renovated kitchen with a waterfall island

    HomeAdvisor’s DIY Kitchen Remodel Cost Guide looks at the cost of buying supplies and doing the work yourself. Find the key cost factors and how to cut expenses.

  • Secret room within bookcase

    HomeAdvisor's expert guide walks you through the cost to build a secret room, whether you're creating a safe room for security or a fun space to fulfil your childhood fantasies. Use this guide to help plan your secret room project and explore room, concea

  • outdoor patio bar

    Explore the cost to build a bar in your home and learn how materials, wet vs. dry bars, and labor costs influence the total price of your project.