How much do addition contractors typically cost?
- Lafayette, California Average$98,346
- Typical Range$35,000 - $98,346
- Low End - High End$5,800 - $300,000
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Get Quotes NowAddition Contractors in Lafayette, CA
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Service Pros
San Jose, CA·
Renovations, Landscaping, Roofing , and 1 more
"Good service, competitive prices, completed the project on time!"
BFF70485135C547322B677792B3900D8B08BCD88960903699A3B0B6E7B6E205A 7. in December 2024
custon ADU build, bathroom & kitchen renovation, new house build , and 2 more
"Our kitchen remodel turned out beautifully. The new layout is so much more practical, and the upgraded cabinets and countertops give the whole space a high?end feel. The crew stayed professional throughout the project and kept everything tidy while they worked. Truly impressive craftsmanship."
A88590C1612AD11A9FABAE7E1DF3D45CA29B9C6978DA64B22C1DF8DD7C48D1D8 3. in September 2026
Foundation Repair, Residential and Commercial Additions, Roof replacement , and 2 more
"He did an amazing job everything like I imagined he brought it to reality definitely recommend"
A1B76D021CC020AEA443896AF7EFDD0B895D2D6112DD10D7C9FC411DF3603391 5. in July 2026
San Jose, CA·
Full Home Remodel, Kitchen And Bathroom Rremodel, Home Addition , and 4 more
"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"
0F1155854396A867395FECEDAB02078A99B1690A6404F8DC55C0EAC9DC7AC6F0 E. in December 2025
Lafayette, CA·
Home Improvement
"Rick is great! He does quality work and is diligent in all that he does. I wll always hire him for projects for my home. I highly recommend him!"
Kevin G. in December 2024
ZR
Concord, CA·
"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!"
919EF96342BC9E72B8B2C6A8ABF99383ACB49BD1ABCB84C3FD41D1DFCA0E4803 4. in February 2026
Carmichael, CA·
Quality finishes, tile, wood, marble, quartz, travertine, stone
"Great job, conscience, timely and complete. Worked like a champ."
47CDBDAE69EE42B718D6FF6E52648BFC3D5F246B9DB276A3B0E49A936CE094AF 8. in November 2025
Walnut Creek, CA·
Additions and Remodels, Window and door replacemet, Additions and Remodels , and 3 more
"A great contractor, shows up on time and really accurate with the pricing."
patty P. in December 2021
UC
Emeryville, CA·
"Updating our home was a dream we have had for years. But finding a good contractor in Bay Area was so difficult, that we almost gave up. We were introduced to United C Construction by our architect(who we also love!) It was exhausting trying to find someone trustworthy and not overpriced. We had luck of working with Osmar which during the project we had clear communication, expectation of setting, professionalism and superior craftsmanship. He walked us through every step of the way, and helped problem solve tough permitting and structural issues in Berkeley!"
Shelby R. in September 2024
Showing 1-9 of 38 results
Costs for related projects in Lafayette, CA
- Build an Addition$35,000 - $98,346
- Demo an Interior$0 - $1,450
- Remodel or Renovate a House$70,000 - $100,015
Frequently asked questions
- It’s important that you verify their license is still in good standing. Also keep in mind that certain states or provinces don’t require licensing if the job is under a certain dollar amount.
- You can find a list of your state’s licensing requirements on the HomeAdvisor website. Before you get to work with the pro, make sure their qualifications are current and acceptable to you.
- It is always a good idea to get a copy of the pro’s insurance certificate for future records, and in case anything happens. This is a good way to feel more secure in your home project, and to weed out potential scammers.
HomeAdvisor makes it easy to connect with pros near you. You can read reviews, get quotes and book appointments all in one place.
Depending on the type of project, you may find subtle differences in the hiring process. Here’s a look at task-specific advice.
You can use HomeAdvisor to help evaluate a contractor’s qualifications. We put pros through a screening process, and award badges to high-performing contractors. You can find these badges on a pro’s HomeAdvisor profile, and sometimes, his or her website.
Your research doesn’t stop here. Once you’ve found a few prospective companies, make an call to ask a few questions about work history, licensure and more:
- Have you completed a job like this before?
- Do you have a list of references I can contact?
- When are you able to start the job?
In most cases, the responses you get to these three questions will give you a very good idea of the right pro for your project. If you have more than one front-runner, these additional questions can help you narrow it down.
- How many years of experience do you have?
- What’s your permanent business address?
- Are you licensed to work in my area?
- When did you earn your business license?
- How do you handle warranty service complaints?
- Do you have worker’s compensation, property damage and personal liability insurance?
Any good contractor will answer these questions, and most will appreciate dealing with a client that takes such an active interest in finding good service. On the other hand, if a contractor gives you a hard time with these questions, you probably want to find someone else.
Related Projects in Lafayette, CA
HomeAdvisor Community Rating
Overall Rating:
Lafayette Addition & Remodeling Contractors are rated 4.8 out of 5 based on 257 reviews of 257 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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