Top-rated second story addition builders.

Get matched with top second story addition builders in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Second story addition builders in Forest-knolls

Avatar for Mt. Tam Construction
Mt. Tam Construction
P.O. Box 1539
4.94(
49
)
Approved Pro
Mt. Tam Construction
P.O. Box 1539
4.94(
49
)
Approved Pro
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
96 local quotes requested

**North Bay's Premier Bathroom Remodeling company.** Mt. Tam construction remodels bathrooms ,kitchens and decks from design to finish and convert garages and basements into living space. Our main focus for the last eight years has been bathroom remodeling. Our projects range from simply removing and replacing fixtures ,tile and plumbing to very complex projects involving wall removal ,relocation of plumbing fixtures ,updated electrical and lighting, and structural dry rot repair. Mt. Tam construction is owned by Roger Huntress, a California licensed general contractor , license number 584072. He has worked in Bay Area residential remodeling for over 30 years serving Marin and San Francisco. We carry Workmen's Compensation and liability insurance on all projects. Let us provide you with a free, detailed proposal for your home remodel. You can contact us today at (415)-730-0438 Email: mttamconstruction@comcast.net We are an "A" rated company.

"It’s all about trust. We live on the East Coast, and our Marin County family home needed a kitchen remodel. We were looking for a contractor we could trust to look out for our best interests. We were fortunate to find Roger Huntress and Mt. Tam Construction. Roger handled everything including several things outside of his responsibilities. He truly wants to help. The Mt. Tam Construction team is professional, they respect your home, and keep a clean work site. The job started on time and finished on schedule. The finished kitchen is exactly what we wanted and within our budget."

David T on December 2023

**North Bay's Premier Bathroom Remodeling company.** Mt. Tam construction remodels bathrooms ,kitchens and decks from design to finish and convert garages and basements into living space. Our main focus for the last eight years has been bathroom remodeling. Our projects range from simply removing and replacing fixtures ,tile and plumbing to very complex projects involving wall removal ,relocation of plumbing fixtures ,updated electrical and lighting, and structural dry rot repair. Mt. Tam construction is owned by Roger Huntress, a California licensed general contractor , license number 584072. He has worked in Bay Area residential remodeling for over 30 years serving Marin and San Francisco. We carry Workmen's Compensation and liability insurance on all projects. Let us provide you with a free, detailed proposal for your home remodel. You can contact us today at (415)-730-0438 Email: mttamconstruction@comcast.net We are an "A" rated company.

"It’s all about trust. We live on the East Coast, and our Marin County family home needed a kitchen remodel. We were looking for a contractor we could trust to look out for our best interests. We were fortunate to find Roger Huntress and Mt. Tam Construction. Roger handled everything including several things outside of his responsibilities. He truly wants to help. The Mt. Tam Construction team is professional, they respect your home, and keep a clean work site. The job started on time and finished on schedule. The finished kitchen is exactly what we wanted and within our budget."

David T on December 2023


Avatar for Crystal Oak Builders
Crystal Oak Builders
28 Pamaron Way
5.00(
5
)
Approved Pro
Crystal Oak Builders
28 Pamaron Way
5.00(
5
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
62 local quotes requested

Crystal Oak Builders is a full-service residential, eco-friendly construction and interior design company. We create beautiful, fresh and affordable interiors throughout the Bay Area. Hi My Name is Heidi Charles. I am the General Contractor / Owner of Crystal Oak Builders. Thank you So much for Reading Our Page. I look forward to the Opportunity to work with You. We are truly excited and passionate about working with our clients every step of the way. From the initial design phase, to product selection, to demo and construction, your happiness is our main goal. We will ask for you to share your budget information and will make every effort to work within those parameters, incorporating everything on your wish list. Included in the cost of your project is our Design Care Coordinator, who will meet with you and help you to choose everything needed for your rennovation. Our computer generated drawings will help you to envision your completed space and make sure it is exactly what you want. Also, our Project Manager will oversee your project from start to finish. We want this process to be as smooth and enjoyable as possible.

"Working with Crystal Oak builders was a wonderful experience from start to finish. They always kept everything clean and was easy to work with. Everything came out beautifully all their work was top-notch. I work with again in a second."

Jill L on March 2025

Crystal Oak Builders is a full-service residential, eco-friendly construction and interior design company. We create beautiful, fresh and affordable interiors throughout the Bay Area. Hi My Name is Heidi Charles. I am the General Contractor / Owner of Crystal Oak Builders. Thank you So much for Reading Our Page. I look forward to the Opportunity to work with You. We are truly excited and passionate about working with our clients every step of the way. From the initial design phase, to product selection, to demo and construction, your happiness is our main goal. We will ask for you to share your budget information and will make every effort to work within those parameters, incorporating everything on your wish list. Included in the cost of your project is our Design Care Coordinator, who will meet with you and help you to choose everything needed for your rennovation. Our computer generated drawings will help you to envision your completed space and make sure it is exactly what you want. Also, our Project Manager will oversee your project from start to finish. We want this process to be as smooth and enjoyable as possible.

"Working with Crystal Oak builders was a wonderful experience from start to finish. They always kept everything clean and was easy to work with. Everything came out beautifully all their work was top-notch. I work with again in a second."

Jill L on March 2025


Wadleigh Group Inc.
214 Club Drive
New on HomeAdvisorNew on Angi
Approved Pro
Wadleigh Group Inc.
214 Club Drive
New on AngiNew on HomeAdvisor
Approved Pro
160 local quotes requested
Free onsite estimate

Wadleigh Group, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Wadleigh Group, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.


Build UR Dream Builders, Inc
833 Mahler Rd # 2
New on HomeAdvisorNew on Angi
Approved Pro
Build UR Dream Builders, Inc
833 Mahler Rd # 2
New on AngiNew on HomeAdvisor
Approved Pro
1101 local quotes requested
19 years of experience

Build Ur Dream Builders Inc, located in Burlingame, CA, specializes in transforming homes into personalized and functional spaces. We offer kitchen and bathroom remodeling, room additions, complete remodeling, and new construction, tailored to your needs and style. Our professional team focuses on quality, attention to detail, and customer satisfaction, delivering exceptional results on every project. Trust us to build the home of your dreams. State Licenses C-39 Roofing #: 1066990 EXP: 7/31/2026 C-33 Painting and Decorating #: 1066990 EXP: 7/31/2026 C-10 Electrical #: 1066990 EXP: 7/31/2026 C-36 Plumbing #: 1066990 EXP: 7/31/2026 B-General Building Contractor #: 1066990 EXP: 7/31/2026

Build Ur Dream Builders Inc, located in Burlingame, CA, specializes in transforming homes into personalized and functional spaces. We offer kitchen and bathroom remodeling, room additions, complete remodeling, and new construction, tailored to your needs and style. Our professional team focuses on quality, attention to detail, and customer satisfaction, delivering exceptional results on every project. Trust us to build the home of your dreams. State Licenses C-39 Roofing #: 1066990 EXP: 7/31/2026 C-33 Painting and Decorating #: 1066990 EXP: 7/31/2026 C-10 Electrical #: 1066990 EXP: 7/31/2026 C-36 Plumbing #: 1066990 EXP: 7/31/2026 B-General Building Contractor #: 1066990 EXP: 7/31/2026


Avatar for Tech Line Construction Inc.
Tech Line Construction Inc.
6114 La Salle Avenue
New on HomeAdvisorNew on Angi
Approved Pro
Tech Line Construction Inc.
6114 La Salle Avenue
New on AngiNew on HomeAdvisor
Approved Pro
2154 local quotes requested
5 years of experience

Welcome to Tech Line Construction, your trusted partner in enhancing your home and transforming your wishes into visual and solid realities. With over a decade of unwavering dedication and a commitment to excellence, we have proudly served our clients in delivering top-tier construction solutions. We specialize in providing top-notch services for residential and commercial projects. Our commitment to professionalism, quality, and meticulous attention to detail sets us apart from our competitors. Choose Tech Line Construction for your next construction project and experience the highest level of service and craftsmanship. Bay Area General B Contractor Jose Rodriguez ( General Building contractor ) (510)798-5869 Office@techlineconstruction.info Tech Line Construction inc TechLineconstructiondesign.com CSLB # LIC 1094361 Commercial liability &Worker comp. Insured & bonded

Welcome to Tech Line Construction, your trusted partner in enhancing your home and transforming your wishes into visual and solid realities. With over a decade of unwavering dedication and a commitment to excellence, we have proudly served our clients in delivering top-tier construction solutions. We specialize in providing top-notch services for residential and commercial projects. Our commitment to professionalism, quality, and meticulous attention to detail sets us apart from our competitors. Choose Tech Line Construction for your next construction project and experience the highest level of service and craftsmanship. Bay Area General B Contractor Jose Rodriguez ( General Building contractor ) (510)798-5869 Office@techlineconstruction.info Tech Line Construction inc TechLineconstructiondesign.com CSLB # LIC 1094361 Commercial liability &Worker comp. Insured & bonded


Avatar for Bay Builders, Inc.
Bay Builders, Inc.
936 B 7th St
5.00(
4
)
Approved Pro
Bay Builders, Inc.
936 B 7th St
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
267 local quotes requested

We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

"John and his team do amazing work. Built a stunning custom office space with a floor to ceiling library, custom cabinets and custom French doors that blended into our existing home design. I’ve owned a number of homes over the years and I’ve never worked with a builder more dedicated to quality and with more experience than Bay."

Peter and Nancy T on February 2025

We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

"John and his team do amazing work. Built a stunning custom office space with a floor to ceiling library, custom cabinets and custom French doors that blended into our existing home design. I’ve owned a number of homes over the years and I’ve never worked with a builder more dedicated to quality and with more experience than Bay."

Peter and Nancy T on February 2025


Avatar for Ceres Construction
Ceres Construction
439 Sherwood Dr
5.00(
6
)
Approved Pro
Ceres Construction
439 Sherwood Dr
5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
151 local quotes requested

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Extremely well. Adrian and his team performed well above and beyond expectations. So much so that I have hired him for another two jobs!"

Brian M on October 2024

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Extremely well. Adrian and his team performed well above and beyond expectations. So much so that I have hired him for another two jobs!"

Brian M on October 2024


Avatar for Tecobuild Inc
Tecobuild Inc
New on HomeAdvisorNew on Angi
Approved Pro
Tecobuild Inc
New on AngiNew on HomeAdvisor
Approved Pro
11 years of experience
Free onsite estimate

We specialize in remodeling and addition ADU’s kitchens and baths of all kinds water heaters windows ,acrylic stuccos ,regular stucco, siding, roofing, electrical, plumbing anything that has to do to a house we do it

We specialize in remodeling and addition ADU’s kitchens and baths of all kinds water heaters windows ,acrylic stuccos ,regular stucco, siding, roofing, electrical, plumbing anything that has to do to a house we do it


Avatar for LB Construction & Remodeling
LB Construction & Remodeling
950 Tower Ln
5.00(
7
)
Approved Pro
LB Construction & Remodeling
950 Tower Ln
5.00(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1222 local quotes requested

With over 20yrs of professional remodeling experience, we believe that customer satisfaction is the only way to succeed and grow in the remodeling industry! We offer a 100% satisfaction guarantee on all projects from building to designing you can always count on us. Our main focus is residential projects, major home remodeling and additions. We are here to help everyone in the bay area, complete any remodeling project needed at top quality and a satisfactory price! Please take a look at our website and contact us today for all of your remodeling needs! We look forward to serving you!

"My partner and I have had the pleasure of working with Dan, David and the hardworking crew at LB Construction & Remodeling for our what is now an extensive home restoration and renovation project. I cannot express how thrilled I am with the results thus far. From start to finish, their team demonstrated an unparalleled level of knowledge, speed, and attentiveness that truly exceeded my expectations. Truthfully, I didn’t know where to begin with my project, so I was very happy when Angi.com recommended LB. Dan responded quickly and was able to meet me at the house and walk the entire site with me. I had recently purchased my house and it needed extensive repair from years of water damage, including repair and replacement of the wood framing, installation of proper drainage, and foundation work. What truly set Dan and team at LB Construction & Remodeling apart was their willingness to help me hash out the details and various plans for our projects. Dan and David patiently worked with me to explore different options, providing valuable insights and recommendations based on their extensive experience, such as navigating permitting, advising on order of operation. This collaborative approach made me the decision-making process easier and less stressful as I had never done anything like this before. The speed at which LB Construction & Remodeling worked on my projects was truly impressive. They efficiently managed their time without compromising on the quality of their work. Every step of the way, it was evident that they were dedicated to completing the project promptly, ensuring minimal disruption to my daily life. Not to mention their attention to detail and commitment to quality craftsmanship were evident in every aspect of the projects, particularly with the reframing and painting. One of the standout qualities of LB Construction & Remodeling is their exceptional attentiveness. Dan consistently paid close attention to my needs and concerns, making me feel valued as a client. An example of this was when I communicated how I wanted the trim around the windows to look, both inside and out. I sent Dan pictures to illustrate what I was expecting, and he listened to me, verified specifics of my ideas, and walked me through how they would be able to achieve the look easily. Their work was seamless and they captured my vision perfectly. Right from the get-go we felt a sense of trust with Dan and team and that really helped make this entire process enjoyable. I wholeheartedly recommend LB Construction and Remodeling to anyone seeking a trustworthy and skilled team for their home improvement needs. I am eager to continue our other home projects with LB Construction & Remodeling in 2024."

Laura C on January 2024

With over 20yrs of professional remodeling experience, we believe that customer satisfaction is the only way to succeed and grow in the remodeling industry! We offer a 100% satisfaction guarantee on all projects from building to designing you can always count on us. Our main focus is residential projects, major home remodeling and additions. We are here to help everyone in the bay area, complete any remodeling project needed at top quality and a satisfactory price! Please take a look at our website and contact us today for all of your remodeling needs! We look forward to serving you!

"My partner and I have had the pleasure of working with Dan, David and the hardworking crew at LB Construction & Remodeling for our what is now an extensive home restoration and renovation project. I cannot express how thrilled I am with the results thus far. From start to finish, their team demonstrated an unparalleled level of knowledge, speed, and attentiveness that truly exceeded my expectations. Truthfully, I didn’t know where to begin with my project, so I was very happy when Angi.com recommended LB. Dan responded quickly and was able to meet me at the house and walk the entire site with me. I had recently purchased my house and it needed extensive repair from years of water damage, including repair and replacement of the wood framing, installation of proper drainage, and foundation work. What truly set Dan and team at LB Construction & Remodeling apart was their willingness to help me hash out the details and various plans for our projects. Dan and David patiently worked with me to explore different options, providing valuable insights and recommendations based on their extensive experience, such as navigating permitting, advising on order of operation. This collaborative approach made me the decision-making process easier and less stressful as I had never done anything like this before. The speed at which LB Construction & Remodeling worked on my projects was truly impressive. They efficiently managed their time without compromising on the quality of their work. Every step of the way, it was evident that they were dedicated to completing the project promptly, ensuring minimal disruption to my daily life. Not to mention their attention to detail and commitment to quality craftsmanship were evident in every aspect of the projects, particularly with the reframing and painting. One of the standout qualities of LB Construction & Remodeling is their exceptional attentiveness. Dan consistently paid close attention to my needs and concerns, making me feel valued as a client. An example of this was when I communicated how I wanted the trim around the windows to look, both inside and out. I sent Dan pictures to illustrate what I was expecting, and he listened to me, verified specifics of my ideas, and walked me through how they would be able to achieve the look easily. Their work was seamless and they captured my vision perfectly. Right from the get-go we felt a sense of trust with Dan and team and that really helped make this entire process enjoyable. I wholeheartedly recommend LB Construction and Remodeling to anyone seeking a trustworthy and skilled team for their home improvement needs. I am eager to continue our other home projects with LB Construction & Remodeling in 2024."

Laura C on January 2024


Avatar for E. Arias & Company
E. Arias & Company
5195 Ramsdell Court
5.00(
5
)
Approved Pro
E. Arias & Company
5195 Ramsdell Court
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2160 local quotes requested

HI!, my name is Irving Rodriguez, and I’m a licensed contractor with over 40 years of experience. I specialize in high-quality remodeling and property services designed to enhance the beauty, functionality, and value of your home. Tailored to your vision and needs. Trust and Reliability: Decades of experience with satisfied homeowners. Quality Workmanship: We deliver durable and aesthetically pleasing results. --- Next Steps If you have a project in mind or want to explore ideas to improve your home, I’d love to discuss it with you. We can schedule a consultation to review your goals and provide a detailed estimate. Thank you for your time, and I look forward to helping you make your home even better!

"So they’ve constructed many different things in my mother’s home now. From bathrooms to and a series of home improvement projects—most notably a complete bathroom remodel, as well as various upgrades and repairs throughout the house—and the experience exceeded all expectations. From the very beginning, the professionalism and attention to detail stood out. They treated our home as if it were theirs, ensuring that every fixture, tile, and finish was executed with precision and care. The bathroom transformation was truly stunning—sleek, modern, and remarkably functional. What impressed me most was the seamless coordination of multiple trades, and how effortlessly he managed the timeline while maintaining an exceptional standard of quality. Not to mention the very affordable pricing! Beyond the bathroom, he tackled several other improvements—drywall repair, custom carpentry, tiling, and fixture installations—all done flawlessly. He brought creative solutions to the table, respected our vision, and always kept us informed throughout the process. Cleanliness, punctuality, and craftsmanship were consistently top-notch. If you’re looking for a contractor who combines integrity, skill, and artistry, look no further. I wouldn’t trust anyone else with my home. This is a rare find in today’s market, and I can’t recommend them highly enough."

brandon p on April 2025

HI!, my name is Irving Rodriguez, and I’m a licensed contractor with over 40 years of experience. I specialize in high-quality remodeling and property services designed to enhance the beauty, functionality, and value of your home. Tailored to your vision and needs. Trust and Reliability: Decades of experience with satisfied homeowners. Quality Workmanship: We deliver durable and aesthetically pleasing results. --- Next Steps If you have a project in mind or want to explore ideas to improve your home, I’d love to discuss it with you. We can schedule a consultation to review your goals and provide a detailed estimate. Thank you for your time, and I look forward to helping you make your home even better!

"So they’ve constructed many different things in my mother’s home now. From bathrooms to and a series of home improvement projects—most notably a complete bathroom remodel, as well as various upgrades and repairs throughout the house—and the experience exceeded all expectations. From the very beginning, the professionalism and attention to detail stood out. They treated our home as if it were theirs, ensuring that every fixture, tile, and finish was executed with precision and care. The bathroom transformation was truly stunning—sleek, modern, and remarkably functional. What impressed me most was the seamless coordination of multiple trades, and how effortlessly he managed the timeline while maintaining an exceptional standard of quality. Not to mention the very affordable pricing! Beyond the bathroom, he tackled several other improvements—drywall repair, custom carpentry, tiling, and fixture installations—all done flawlessly. He brought creative solutions to the table, respected our vision, and always kept us informed throughout the process. Cleanliness, punctuality, and craftsmanship were consistently top-notch. If you’re looking for a contractor who combines integrity, skill, and artistry, look no further. I wouldn’t trust anyone else with my home. This is a rare find in today’s market, and I can’t recommend them highly enough."

brandon p on April 2025

...
Showing 1-10 of 981

Second story addition building services FAQs

For many homeowners, building up is worth the expense because it provides the extra bedrooms or living areas that can’t be accommodated within the existing footprint. A larger, updated home often commands a higher resale price, recouping a sizable share of the project cost while allowing you to stay in the neighborhood you love. Run the numbers with a real estate agent and contractor to ensure the expected return and day-to-day benefits align with your goals.

Whether it makes more sense to build up or out depends on your lot, budget, and local code. Building up preserves yard space and involves less foundation work, but you may need to vacate the home during construction. Building out avoids staircases and can proceed while you stay put; however, it encroaches on the yard and may face setback limits. Compare both options with your contractor before making a decision.

A structural engineer will first inspect the existing foundation for cracks, footings, and load capacity. Depending on the findings, the crew may pour new concrete footings, install steel or concrete piers, add reinforced beams, or tie additional rebar into the slab. These upgrades redistribute the weight of the new floor and bring the structure up to code. Your contractor will outline the specific reinforcement plan and timeline once the engineering report is complete.

The homeowners guide to second story addition building services
From average costs to expert advice, get all the answers you need to get your job done.
built-in outdoor kitchen with grill and sink
Apr 30, 2025
Apr 30, 2025
Budget for outdoor kitchen costs based on factors such as appliances, materials, permits, labor, amenities, kitchen size, customizations, and more.
BLUE TWO STORY HOME
Apr 30, 2025
Apr 30, 2025
Budget for the cost to add a second story based on factors such as size, foundation work, materials, labor, permits, post-construction cleaning, and more.
small bathroom that has been updated in a remodel
Apr 29, 2025
Apr 29, 2025
Budget for the cost to remodel a small bathroom based on factors such as required fixtures, bathroom size, labor, remodel type, site prep, and more.
guest house in the backyard
Apr 27, 2025
Apr 27, 2025
Need to build a guest house? Here’s how much it costs, what factors affect cost, and what to expect.
Kitchen view leading into dining area
Apr 28, 2025
Apr 28, 2025
Use this guide to budget for bump-out addition costs based on factors such as room size, room type, labor, finishes, permits, and more.
House roof with nice window
Apr 28, 2025
Apr 28, 2025
Budget for dormer addition costs based on factors such as roof type, framing, customizations, reinforcement, cladding, labor, and more.
Share project details to get started.