Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Lafayette, CA

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.

Find Addition to existing structure builders in Lafayette

Avatar for OT Bay Builders

OT Bay Builders

4.99(
77
)
•Approved Pro

OT Bay Builders

4.99(
77
)
•Approved Pro
Super Service Award
Customers say: Quick response
5 years of experience
Free onsite estimate

At OT Bay Builders, we believe every home tells a story — and we’re here to help you write yours. Serving homeowners across the Bay Area, we deliver high-quality remodeling built on craftsmanship, transparency, and lasting value. With over five years of proven experience and hundreds of successful projects, we take pride in honest communication, detailed project management, and results that exceed expectations. From your first consultation to final walkthrough, you’ll enjoy a smooth, stress-free process backed by a dedicated team that cares about your vision. Your home is more than a project — it’s a reflection of your lifestyle and dreams. At OT Bay Builders, we build homes that last, experiences that matter, and client relationships rooted in trust. Your dream is our passion. Let’s bring it to life with craftsmanship, integrity, and care. Contact OT Bay Builders today to schedule your free consultation or project estimate.

"We love our new deck! It’s sturdy, beautiful, and adds so much value to our backyard. The team listened to what we wanted and delivered exactly that, right down to the custom railing and built-in seating."

Kolber S on April 2025

At OT Bay Builders, we believe every home tells a story — and we’re here to help you write yours. Serving homeowners across the Bay Area, we deliver high-quality remodeling built on craftsmanship, transparency, and lasting value. With over five years of proven experience and hundreds of successful projects, we take pride in honest communication, detailed project management, and results that exceed expectations. From your first consultation to final walkthrough, you’ll enjoy a smooth, stress-free process backed by a dedicated team that cares about your vision. Your home is more than a project — it’s a reflection of your lifestyle and dreams. At OT Bay Builders, we build homes that last, experiences that matter, and client relationships rooted in trust. Your dream is our passion. Let’s bring it to life with craftsmanship, integrity, and care. Contact OT Bay Builders today to schedule your free consultation or project estimate.

"We love our new deck! It’s sturdy, beautiful, and adds so much value to our backyard. The team listened to what we wanted and delivered exactly that, right down to the custom railing and built-in seating."

Kolber S on April 2025

Avatar for Cal Green Remodeling Inc.

Cal Green Remodeling Inc.

5.00(
34
)
•Approved Pro

Cal Green Remodeling Inc.

5.00(
34
)
•Approved Pro
Customers say: Quick response
11 years of experience
Free onsite estimate

Home Remodeling and Commercial Renovation. From custom kitchens to concrete floors we do it all and our experienced professionals can help you figure out what products are right for you. We offer industrial grade finishes that can handle excessive traffic, as well as fine finishes for your home.

"Friendly, easy to work with, stuck with budget. Project turned out better than anticipated."

Serena L on December 2025

Home Remodeling and Commercial Renovation. From custom kitchens to concrete floors we do it all and our experienced professionals can help you figure out what products are right for you. We offer industrial grade finishes that can handle excessive traffic, as well as fine finishes for your home.

"Friendly, easy to work with, stuck with budget. Project turned out better than anticipated."

Serena L on December 2025

Avatar for Dynamicz Construction, Inc.

Dynamicz Construction, Inc.

5.00(
59
)
•Approved Pro

Dynamicz Construction, Inc.

5.00(
59
)
•Approved Pro
Super Service Award
Customers say: Quick response
2 years of experience
Free onsite estimate

With over 15 years of combined experience, DynamicZ Construction guarantees top-quality craftsmanship, exceptional customer care, competitive pricing, reliable service, and timely project completion. We offer a wide range of services, including: Full home remodels Bathroom remodels Kitchen remodels Home additions Accessory Dwelling Units (ADUs) Concrete installations Our business is built on a foundation of quality, reliability, and innovation. We are passionate, dedicated, and meticulous, ensuring every project reflects our commitment to excellence. At Dynamicz Construction, we value integrity, craftsmanship, and customer satisfaction, delivering results that are both stunning and enduring. We will only leave when you're 100% happy, guaranteed!

"With this team, my addition build turned out very well. The quality of their work is very good and we are happy at everything, they created everything that we wanted without hassle and the whole project went smoothly. "

Ivy K on December 2025

With over 15 years of combined experience, DynamicZ Construction guarantees top-quality craftsmanship, exceptional customer care, competitive pricing, reliable service, and timely project completion. We offer a wide range of services, including: Full home remodels Bathroom remodels Kitchen remodels Home additions Accessory Dwelling Units (ADUs) Concrete installations Our business is built on a foundation of quality, reliability, and innovation. We are passionate, dedicated, and meticulous, ensuring every project reflects our commitment to excellence. At Dynamicz Construction, we value integrity, craftsmanship, and customer satisfaction, delivering results that are both stunning and enduring. We will only leave when you're 100% happy, guaranteed!

"With this team, my addition build turned out very well. The quality of their work is very good and we are happy at everything, they created everything that we wanted without hassle and the whole project went smoothly. "

Ivy K on December 2025

Avatar for Bay Remodeling Kitchen & Bath

Bay Remodeling Kitchen & Bath

5.00(
39
)
•Approved Pro

Bay Remodeling Kitchen & Bath

5.00(
39
)
•Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
20 years of experience

Bay Remodeling Kitchen & Bath is a complete home remodeling service, including design, kitchen remodeling, bathroom remodeling, flooring, roofing, new builds, and home additions—owned and operated as a general contractor and construction management company. We are a full-service construction contractor with an in-house team providing expertise across all trades, specializing in KITCHEN & BATH REMODELING. We can complete projects ranging in size from residential remodels to retail build-outs to large commercial jobs. We pride ourselves on our collaborative approach and the high client satisfaction we achieve through quality work. CALL US TODAY FOR A FREE CONSULTATION

"I couldn't ask for a better company or result for my bathroom remodel. It started with my first meeting with Eli, who was very professional, concise and forthright in his presentation to me. It was my third estimate for the project, but.my decision was clear after meeting Eli. I love my new bathroom. The workers were excellent and always left everything neat after each day. The job was completed in 7 days, sooner than projected. Eli helped me with some of the tile choices and was patient when I asked many questions. Thank you so much, Eli"

Lynn V on December 2025

Bay Remodeling Kitchen & Bath is a complete home remodeling service, including design, kitchen remodeling, bathroom remodeling, flooring, roofing, new builds, and home additions—owned and operated as a general contractor and construction management company. We are a full-service construction contractor with an in-house team providing expertise across all trades, specializing in KITCHEN & BATH REMODELING. We can complete projects ranging in size from residential remodels to retail build-outs to large commercial jobs. We pride ourselves on our collaborative approach and the high client satisfaction we achieve through quality work. CALL US TODAY FOR A FREE CONSULTATION

"I couldn't ask for a better company or result for my bathroom remodel. It started with my first meeting with Eli, who was very professional, concise and forthright in his presentation to me. It was my third estimate for the project, but.my decision was clear after meeting Eli. I love my new bathroom. The workers were excellent and always left everything neat after each day. The job was completed in 7 days, sooner than projected. Eli helped me with some of the tile choices and was patient when I asked many questions. Thank you so much, Eli"

Lynn V on December 2025

Avatar for BE HOME REMODELING INC

BE HOME REMODELING INC

4.96(
13
)
•Approved Pro

BE HOME REMODELING INC

4.96(
13
)
•Approved Pro
Super Service Award
Customers say: Quick response
2 years of experience
Free onsite estimate

Be Home Remodeling is a home improvement company dedicated to transforming spaces with quality craftsmanship and personalized service. We specialize in a range of remodeling projects, from kitchens and bathrooms to full home renovations, back yard remodeling and more. Our team of experienced professionals collaborates closely with clients to understand their vision and bring it to life, ensuring each project reflects their style and meets their needs. Whether you're looking to update a single room or undertake a complete overhaul, Be Home Remodeling is here to make your dream home a reality.

"We recently had our bathroom remodeled by Be Home Remodeling, and I just wanted to share how happy we are with everything. Pouria, our project manager, was great — super organized, always kept us updated, and really listened to any concerns we had. Any time we needed something or had a question, he handled it right away. The crew (Manuel, Isaí )did an awesome job. They worked cleanly, were respectful of our home, and the quality of the work shows. The bathroom turned out even better than we expected, and we honestly love how everything came out. Overall, it was a really smooth experience, and we’d definitely recommend Be Home Remodeling and Pouria if you’re planning a remodel."

Svetlana K on March 2026

Be Home Remodeling is a home improvement company dedicated to transforming spaces with quality craftsmanship and personalized service. We specialize in a range of remodeling projects, from kitchens and bathrooms to full home renovations, back yard remodeling and more. Our team of experienced professionals collaborates closely with clients to understand their vision and bring it to life, ensuring each project reflects their style and meets their needs. Whether you're looking to update a single room or undertake a complete overhaul, Be Home Remodeling is here to make your dream home a reality.

"We recently had our bathroom remodeled by Be Home Remodeling, and I just wanted to share how happy we are with everything. Pouria, our project manager, was great — super organized, always kept us updated, and really listened to any concerns we had. Any time we needed something or had a question, he handled it right away. The crew (Manuel, Isaí )did an awesome job. They worked cleanly, were respectful of our home, and the quality of the work shows. The bathroom turned out even better than we expected, and we honestly love how everything came out. Overall, it was a really smooth experience, and we’d definitely recommend Be Home Remodeling and Pouria if you’re planning a remodel."

Svetlana K on March 2026

Avatar for Zacarias Remodeling Construction

Zacarias Remodeling Construction

5.00(
32
)
•Approved Pro

Zacarias Remodeling Construction

5.00(
32
)
•Approved Pro
Customers say: Quick response
17 years of experience
Free onsite estimate

We are a locally owned and operated company since 2009, with lots of industry experience. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other Home Improvement 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! We are a bilingual company, and are happy to serve both our English and Spanish Speaking communities! ¡Hablamos Espanol!

" Zacarias Remodeling Construction did an amazing job on my brand new kitchen! I wanted my kitchen to be done before Christmas and they worked above and beyond to complete it! Oscar (the Owner) would come to see how the project was progressing and inspect the finished work and made sure if we had any concerns or questions. The workers are professional and hard workers!! They also made sure everything was clean before leaving for the day. Suzanne (Estimator/Designer) was there 100% of the time for questions, advice and opinion on the design. Awesome to work with! I am very happy with my kitchen and highly recommend them!"

Catherine D on February 2026

We are a locally owned and operated company since 2009, with lots of industry experience. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other Home Improvement 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! We are a bilingual company, and are happy to serve both our English and Spanish Speaking communities! ¡Hablamos Espanol!

" Zacarias Remodeling Construction did an amazing job on my brand new kitchen! I wanted my kitchen to be done before Christmas and they worked above and beyond to complete it! Oscar (the Owner) would come to see how the project was progressing and inspect the finished work and made sure if we had any concerns or questions. The workers are professional and hard workers!! They also made sure everything was clean before leaving for the day. Suzanne (Estimator/Designer) was there 100% of the time for questions, advice and opinion on the design. Awesome to work with! I am very happy with my kitchen and highly recommend them!"

Catherine D on February 2026

Avatar for S&L REMODELING AND DESIGN INC

S&L REMODELING AND DESIGN INC

4.84(
37
)
•Approved Pro

S&L REMODELING AND DESIGN INC

4.84(
37
)
•Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
13 years of experience

S&L Remodeling and Design are committed to providing honest, professional services and sincerely understanding your needs. We provide a clean and safe job site every day and make sure that the project gets done right the first time. Our team is always staying on top of the latest trends as well as training and expanding our knowledge regarding the newest construction and design solutions available, including the use of cutting-edge technology. We are ready for whatever project you throw our way.

"Did a remodeling with S&L, they've done a great job. Team is responsible and project deadline was on time. Daniel was great to work with! Highly recommended"

David D on May 2023

S&L Remodeling and Design are committed to providing honest, professional services and sincerely understanding your needs. We provide a clean and safe job site every day and make sure that the project gets done right the first time. Our team is always staying on top of the latest trends as well as training and expanding our knowledge regarding the newest construction and design solutions available, including the use of cutting-edge technology. We are ready for whatever project you throw our way.

"Did a remodeling with S&L, they've done a great job. Team is responsible and project deadline was on time. Daniel was great to work with! Highly recommended"

David D on May 2023

Avatar for EA Home Builders, Inc.

EA Home Builders, Inc.

5.00(
12
)
•Approved Pro

EA Home Builders, Inc.

5.00(
12
)
•Approved Pro
Super Service Award
Customers say: Quick response
15 years of experience
Free onsite estimate

EA Home Builders 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.

"Yes I had a full roof installed;"

Linda lea W on February 2026

EA Home Builders 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.

"Yes I had a full roof installed;"

Linda lea W on February 2026

Avatar for Quartz Construction

Quartz Construction

4.78(
65
)
•Approved Pro

Quartz Construction

4.78(
65
)
•Approved Pro
Customers say: Quick response
26 years of experience
Free onsite estimate

We�re a locally owned and operated company with over 40 years of industry experience. We specialize in a variety of home improvement projects which include bathroom remodels, decks, plumbing, flooring, hardscapes and major home repair jobs. 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!

"We recently had the chance to work with Quartz construction ( owner: Ohad) on our construction project for bathroom remodeling and we couldn’t be more pleased with the results. From start to finish, their team demonstrated professionalism, transparency. They maintained clear communication throughout the project, kept us informed of progress and any potential changes, and delivered everything on time and within budget. The quality of the workmanship is outstanding — every detail was handled with care and precision. What stood out most was their commitment to customer satisfaction. They were responsive to our questions, respectful of our space, and ensured that the final outcome matched our vision perfectly. If you're looking for a reliable, skilled, and trustworthy construction contractor, I wholeheartedly recommend Quartz Construction, Ohad and his team. AJ "

Ajay M on June 2025

We�re a locally owned and operated company with over 40 years of industry experience. We specialize in a variety of home improvement projects which include bathroom remodels, decks, plumbing, flooring, hardscapes and major home repair jobs. 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!

"We recently had the chance to work with Quartz construction ( owner: Ohad) on our construction project for bathroom remodeling and we couldn’t be more pleased with the results. From start to finish, their team demonstrated professionalism, transparency. They maintained clear communication throughout the project, kept us informed of progress and any potential changes, and delivered everything on time and within budget. The quality of the workmanship is outstanding — every detail was handled with care and precision. What stood out most was their commitment to customer satisfaction. They were responsive to our questions, respectful of our space, and ensured that the final outcome matched our vision perfectly. If you're looking for a reliable, skilled, and trustworthy construction contractor, I wholeheartedly recommend Quartz Construction, Ohad and his team. AJ "

Ajay M on June 2025

Avatar for Tech Line Construction, Inc.

Tech Line Construction, Inc.

5.00(
13
)
•Approved Pro

Tech Line Construction, Inc.

5.00(
13
)
•Approved Pro
Customers say: Quick response
19 years of experience
Free onsite estimate

At Tech Line Construction, we take immense pride in our long built reputation for building stunning, efficient home improvement projects that mirror the unique style and elegance of the people who live in them. Tech Line Construction has a standing passion for the intricacies and artistry involved with residential home improvement . With team members over 15 years in the industry and a wealth of experience, Tech Line Construction is the premier choice for those looking to craft their dreams into a reality. Our focus is every little detail and we take great pride in setting the bar for the highest standards in quality craftsmanship and proactive problem-solving. Don't hesitate to contact us today for a free consultation TECHLINECONSTRUCTIONDESIGN.COM Office@techlinconstruction.info (510)798-5869

"Tech Line Construction was easy to work with. They showed up when scheduled and finished the project as discussed. The workmanship was solid, and communication was consistent throughout."

lio m on December 2025

At Tech Line Construction, we take immense pride in our long built reputation for building stunning, efficient home improvement projects that mirror the unique style and elegance of the people who live in them. Tech Line Construction has a standing passion for the intricacies and artistry involved with residential home improvement . With team members over 15 years in the industry and a wealth of experience, Tech Line Construction is the premier choice for those looking to craft their dreams into a reality. Our focus is every little detail and we take great pride in setting the bar for the highest standards in quality craftsmanship and proactive problem-solving. Don't hesitate to contact us today for a free consultation TECHLINECONSTRUCTIONDESIGN.COM Office@techlinconstruction.info (510)798-5869

"Tech Line Construction was easy to work with. They showed up when scheduled and finished the project as discussed. The workmanship was solid, and communication was consistent throughout."

lio m on December 2025

...
Showing 1-10 of 51
FAQs for addition to existing structure building service projects in Lafayette, CA

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Lafayette, CA 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.

See all articles