Guest House Builders in Diablo, CA
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Service Pros
Kitchen Renovation, Additions, Deck Builds , and 8 more
"Finally got our old office converted into a guest bath. We're expecting some family to move in with us for the summer, and we definitely needed the extra bath. The conversion was surprisingly quick, which was just what we wanted. In the span of a month, they were able to relocate the plumbing and electrical, then build a whole new bathroom that matched our master bathroom too! The tile work is very clean, the space was utilized well, and the professionalism DynamicZ carried themselves with was impeccable!"
F174423444907A20B05145600DD8B960B743C75023548870468DD2075F4DD16A B. in May 2025
Renovations, Landscaping, Roofing , and 1 more
"Our unfinished basement is now a cozy, functional living space! They added a guest bedroom, bathroom, and a family lounge area. The craftsmanship is outstanding, and the crew was courteous and respectful. Worth every penny."
0E5CBC23E8120C5C874888E64425E5407A83348D4D76C220F1E58315AF8E2405 7. in April 2025
"We hired EA Home Builders to renovate our guest bathroom - and they did a great job for us. The two gentlemen they hired for our job were skilled professionals. They said it would take about a week and it did these guys showed up on time every morning and worked all day (with a half hour break for lunch). And at the end of each day, they meticulously cleaned up the inevitable mess of the day. Without a doubt I would use EA Home Builders again for our next project."
BDA79407F1087C1F6D4DFF088590085F670B683F1FEF9046862B9EEFCD70C047 7. in February 2025
Decks and porches, Kitchen Remodels, Bathroom Remodels , and 2 more
"I hired Anthony to do a complete remodel of my interior of my home. We knocked out walls redone all the lighting and cabinetry. He completely floored us with the results. We couldn’t be happier. Did exactly what he said he was going to do and in the time frame he promised! I’m using him on my next project my guest bathroom remodel. He’s honest and came in on budget. Good job to him and his team."
0CB3155706789B363D519FC044C55BC17FD75AE8DD568BFDFF9DBFFCA8AAC833 A. in August 2025
Concrete, Painting, Roofing , and 1 more
"We hired McCormick for a bathroom remodel, and the whole process was smooth and professional. Khaled helped us make smart choices on design and materials that worked for both our budget and style. Now, our bathroom feels like a spa every time we step in. I appreciate the quality and attention to detail. These folks definitely know what they?re doing!"
Jackson M J. in December 2024
Roofing Repairs, Deck Builds, Roofing Installs , and 5 more
"Ascend completed extensive projects for our 26 year old house, new roof deck, repairs to roof, replacement of sections of our roof. all well done. More projects planned for spring 2026"
8BF3F6C16B1F633A0E7E9B5B863801D67DE3F40A081D9D2C647A0B19E0A7A8B9 D. in October 2025
In business since 2019
Additions and Remodels
About us: "RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!"
In business since 1998
About us: "JFK Builders offers quality services to clients at reasonable prices. Our courteous staff has the professional tools and experience necessary to help with all your needs. We specialize in kitchen, bathroom and garage remodeling, additions and HVAC. Call today to get in touch with our staff, and to learn more about what we have to offer!"
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 Diablo, CA
HomeAdvisor Community Rating
Diablo Addition & Remodeling Contractors are rated 0.0 out of 5 based on 0 reviews of 0 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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Things to Consider Before You Build a Guest House in Diablo, CA:
What best describes this project?
What type of guest house/casita addition will this be?
- Detached addition
- Addition attached to home
- Remodel existing space
Select the rooms included in this project:
- Bathroom
- Kitchen
- Bedroom(s)
- Living/Family room
- Laundry/Mud room
- Deck/Porch
Do you provide these professional services?
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