Top-rated guest house builders.

Get matched with top guest house 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.

Guest house builders in Union City

Avatar for Build The Bay, Inc.
Build The Bay, Inc.
1222 Hermosa Way
4.97(
33
)
Approved Pro
Build The Bay, Inc.
1222 Hermosa Way
4.97(
33
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
725 local quotes requested

We have the experience and dedication to bring your dreams to reality! Specializing in remodeling services of all kinds, we guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today!

"I found Build the Bay through Angi’s List and I’m so glad we went with them for our bathroom update/remodel! Working with Eitan and his team was like night and day compared to other contractors I have worked with in the past. Specifically what I appreciated is that he treated me with respect and would take the time to explain in layman’s terms what was needed. (I’m not a construction pro by any means.) Eitan even shared a list of vendors that he has worked with in the past for materials and finishes, as well as a checklist to ensure I ordered all the finishing pieces in time. He would even be willing to review any products I was interested in to let me know if it was good quality. It’s only normal for unexpected issues to come up during construction, and what was also great is how communicative Eitan and his team were with me. They would quickly let me know what the issue was, explain what my options were, the cost for each, and what those options would mean in the long run. Eitan always responded very promptly via email or text if I had any questions or requested any updates. Our project has been done for about a month now and I have to say that I strongly feel like Eitan and his team delivered high quality bathrooms in a timely manner. I would definitely reach out to the Build the Bay team again if we needed to do work on our home again."

Samara W on April 2025

We have the experience and dedication to bring your dreams to reality! Specializing in remodeling services of all kinds, we guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today!

"I found Build the Bay through Angi’s List and I’m so glad we went with them for our bathroom update/remodel! Working with Eitan and his team was like night and day compared to other contractors I have worked with in the past. Specifically what I appreciated is that he treated me with respect and would take the time to explain in layman’s terms what was needed. (I’m not a construction pro by any means.) Eitan even shared a list of vendors that he has worked with in the past for materials and finishes, as well as a checklist to ensure I ordered all the finishing pieces in time. He would even be willing to review any products I was interested in to let me know if it was good quality. It’s only normal for unexpected issues to come up during construction, and what was also great is how communicative Eitan and his team were with me. They would quickly let me know what the issue was, explain what my options were, the cost for each, and what those options would mean in the long run. Eitan always responded very promptly via email or text if I had any questions or requested any updates. Our project has been done for about a month now and I have to say that I strongly feel like Eitan and his team delivered high quality bathrooms in a timely manner. I would definitely reach out to the Build the Bay team again if we needed to do work on our home again."

Samara W on April 2025


Avatar for Unique Home Design & Remodeling
Unique Home Design & Remodeling
303 Twin Dolphin Dr.
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
Unique Home Design & Remodeling
303 Twin Dolphin Dr.
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
2310 local quotes requested
42 years of experience

Unique Home Design & Remodeling is a leader in providing value-added construction services to our customers by creating a successful partnership throughout the construction process. Our pledge is to establish lasting relationships with our customers by exceeding their expectations and gaining their trust through exceptional performance by every member on our construction team. Unique Home Design & Remodeling's mission is to accomplish full customer satisfaction in every area possible from color selection to project completion. Unique Home Design & Remodeling's main focus is to provide our future clients with a professional home improvement experience. We vow to our customers with the highest level of quality construction services at fair market and competitive prices. To ensure the longevity of our company through repeat and referral business achieved by customer satisfaction in all areas including timeliness, attention to detail and service-minded attitudes.

Unique Home Design & Remodeling is a leader in providing value-added construction services to our customers by creating a successful partnership throughout the construction process. Our pledge is to establish lasting relationships with our customers by exceeding their expectations and gaining their trust through exceptional performance by every member on our construction team. Unique Home Design & Remodeling's mission is to accomplish full customer satisfaction in every area possible from color selection to project completion. Unique Home Design & Remodeling's main focus is to provide our future clients with a professional home improvement experience. We vow to our customers with the highest level of quality construction services at fair market and competitive prices. To ensure the longevity of our company through repeat and referral business achieved by customer satisfaction in all areas including timeliness, attention to detail and service-minded attitudes.


JP LANDSCAPING
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
JP LANDSCAPING
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
570 local quotes requested
24 years of experience

With over 15 years of landscaping and concrete business, we are here to help you with all your landscaping and concrete needs and dreams.

With over 15 years of landscaping and concrete business, we are here to help you with all your landscaping and concrete needs and dreams.


Avatar for Tech Line Construction Inc.
Tech Line Construction Inc.
6114 La Salle Avenue
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
Tech Line Construction Inc.
6114 La Salle Avenue
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
2543 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 Geico Builders
Geico Builders
1901 Harrison Street
5.00(
20
)
Approved Pro
Geico Builders
1901 Harrison Street
5.00(
20
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1923 local quotes requested

Geico Builders specializes in meeting your expectations before, during, and after the project is complete. Our most upstanding quality is our accountability--you can expect us to own the work we complete for your home. Of course, we know accountability means nothing without proof, which is why we are happy to offer a 2-year workmanship warranty to all of our clients. This is a rare quality for this industry, but we wanted to prove to you that we stand by our craftsmanship through our home remodeling construction services. Every Crew at Geico Builders has been professionally trained and will treat your home with integrity and respect.

"Number one in communications and top attention in details. We worked with Geico Builders to build our addition, ADU and install pavers on the front of the house. Overall the process took us almost one year they were delays from the city of Oakland on approval plans despite that Victor went above and beyond and smooth all process once they got to actual building. He work hard to make progress easy on our addition especially with tough Inspectors. The quality of our new ADU well-built, and the bathroom has a great tile work with precise attention to details. Their price was not the cheapest one but for the amount of time and quality of work it’s very well deserved, we feel like we got good value for the money we paid. We do recommend Geico Builders and especially Victor to all who is looking for quality work."

Bahar C on July 2025

Geico Builders specializes in meeting your expectations before, during, and after the project is complete. Our most upstanding quality is our accountability--you can expect us to own the work we complete for your home. Of course, we know accountability means nothing without proof, which is why we are happy to offer a 2-year workmanship warranty to all of our clients. This is a rare quality for this industry, but we wanted to prove to you that we stand by our craftsmanship through our home remodeling construction services. Every Crew at Geico Builders has been professionally trained and will treat your home with integrity and respect.

"Number one in communications and top attention in details. We worked with Geico Builders to build our addition, ADU and install pavers on the front of the house. Overall the process took us almost one year they were delays from the city of Oakland on approval plans despite that Victor went above and beyond and smooth all process once they got to actual building. He work hard to make progress easy on our addition especially with tough Inspectors. The quality of our new ADU well-built, and the bathroom has a great tile work with precise attention to details. Their price was not the cheapest one but for the amount of time and quality of work it’s very well deserved, we feel like we got good value for the money we paid. We do recommend Geico Builders and especially Victor to all who is looking for quality work."

Bahar C on July 2025


Avatar for Dream Build Services LLC
Dream Build Services LLC
3654 Thornton Avenue #530
5.00(
7
)
Approved Pro
Dream Build Services LLC
3654 Thornton Avenue #530
5.00(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1320 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!

"Dylan and team did a great job. Crew is humble and patient and punctual. Dylan is responsive with queries."

Gaurav S on July 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!

"Dylan and team did a great job. Crew is humble and patient and punctual. Dylan is responsive with queries."

Gaurav S on July 2025


Avatar for Remodeling Heroes
Remodeling Heroes
2515 Santa Clara Ave
5.00(
21
)
Approved Pro
Remodeling Heroes
2515 Santa Clara Ave
5.00(
21
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
747 local quotes requested

Heroes comprises a team of super-talented and skilled professionals who have joined forces to create a company that provides a comprehensive array of solutions for homeowners throughout the Bay Area. Our experts have the extensive experience in their respective fields to creatively solve any issue. Our design team will help you draw up the home renovation of your dreams with ease and precision.

"I enjoyed every aspect of working with this company. They redid our entire kitchen. Though it was a big project they made everything go smoothly. They were so communicative and stayed right on schedule. Everyone who worked on our home was extremely kind and professional. I couldn't be happier with the end result. I'm happy I decided to do business with them. I will always recommend Remodeling Heroes."

Albert R on September 2024

Heroes comprises a team of super-talented and skilled professionals who have joined forces to create a company that provides a comprehensive array of solutions for homeowners throughout the Bay Area. Our experts have the extensive experience in their respective fields to creatively solve any issue. Our design team will help you draw up the home renovation of your dreams with ease and precision.

"I enjoyed every aspect of working with this company. They redid our entire kitchen. Though it was a big project they made everything go smoothly. They were so communicative and stayed right on schedule. Everyone who worked on our home was extremely kind and professional. I couldn't be happier with the end result. I'm happy I decided to do business with them. I will always recommend Remodeling Heroes."

Albert R on September 2024


JCC Residential Remodeling & Maintenance
2318 106th Ave
5.00(
2
)
Approved Pro
JCC Residential Remodeling & Maintenance
2318 106th Ave
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3817 local quotes requested

We offer everything from residential repairs to full kitchen and bathroom remodeling! We pride ourselves on our over twenty years of experience and offer 100% satisfaction. Contact us for free quotes!

"Excellent! I thought I needed a new thermostat since I wasn’t getting any heat. Juan came over , checked the circuit breaker and found that the breaker was worn out. He replaced the breaker and found that the thermostat was still functioning. He could have said that the thermostat needed replacing too but instead he just said you needed a new circuit breaker. I really appreciated the honesty. If he said I needed the thermostat too I would have paid for both thus increasing my bill. I just want to add a few more comments about the work that he’s done for me. I first met Juan when he came over to my house to stabilize a lose tile that was above my garage door. Then I showed him mold growing next to my shower door. He found a small crack that allowed water to seep into the sheet rock. He replaced the shower door and the sheet rock that was growing mold. Then I took him to the bathroom where I showed him a bulging floor board next to the toilet. He found a small crack in the toilet tank that slowly dripped water on to the backside of toilet dripping water onto the base board. He offered to repair the tank but I told him to go ahead and replace the toilet. I can’t say enough about Juan. Whatever the problem is he’ll figure out how to fix it. When he approaches a problem he approaches with a positive attitude. Another time my ceiling fan went out and I asked him to come out to see what the problem was. Instead over the phone he told me to check the remote control. I went on Amazon and ordered a new remote control . I placed in new batteries and the fan started working. He didn’t charge me anything for the advice. I was prepared to buy a new fan and all I needed was a new remote. Juan is multi talented. I’ve recommend him to my neighbor and he’s done a couple of projects for her (leaking roof). Lastly, in a couple of weeks he’s coming over to paint my front door and put a new latch on my side gate. I’m 77 years with an injured leg so fixing things around the house is difficult for me. Juan has made my life easier."

Calvin C on February 2025

We offer everything from residential repairs to full kitchen and bathroom remodeling! We pride ourselves on our over twenty years of experience and offer 100% satisfaction. Contact us for free quotes!

"Excellent! I thought I needed a new thermostat since I wasn’t getting any heat. Juan came over , checked the circuit breaker and found that the breaker was worn out. He replaced the breaker and found that the thermostat was still functioning. He could have said that the thermostat needed replacing too but instead he just said you needed a new circuit breaker. I really appreciated the honesty. If he said I needed the thermostat too I would have paid for both thus increasing my bill. I just want to add a few more comments about the work that he’s done for me. I first met Juan when he came over to my house to stabilize a lose tile that was above my garage door. Then I showed him mold growing next to my shower door. He found a small crack that allowed water to seep into the sheet rock. He replaced the shower door and the sheet rock that was growing mold. Then I took him to the bathroom where I showed him a bulging floor board next to the toilet. He found a small crack in the toilet tank that slowly dripped water on to the backside of toilet dripping water onto the base board. He offered to repair the tank but I told him to go ahead and replace the toilet. I can’t say enough about Juan. Whatever the problem is he’ll figure out how to fix it. When he approaches a problem he approaches with a positive attitude. Another time my ceiling fan went out and I asked him to come out to see what the problem was. Instead over the phone he told me to check the remote control. I went on Amazon and ordered a new remote control . I placed in new batteries and the fan started working. He didn’t charge me anything for the advice. I was prepared to buy a new fan and all I needed was a new remote. Juan is multi talented. I’ve recommend him to my neighbor and he’s done a couple of projects for her (leaking roof). Lastly, in a couple of weeks he’s coming over to paint my front door and put a new latch on my side gate. I’m 77 years with an injured leg so fixing things around the house is difficult for me. Juan has made my life easier."

Calvin C on February 2025


Avatar for LECUT CONSTRUCTION INC
LECUT CONSTRUCTION INC
1762 Technology Drive
5.00(
3
)
Approved Pro
LECUT CONSTRUCTION INC
1762 Technology Drive
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1587 local quotes requested

Our main goal in LeCut Construction is to make our clients happy and satisfied from all the stages of the project! We believe in good workmanship that's why our guys are very dedicated and diligent that's what makes our job much easier. LeCut Construction is a family-owned and operated contracting company serving the Bay Area. We pride ourselves in our detailed workmanship and exceptional customer service. When you choose LeCut to carry out your vision, you become part of the LeCut family. We treat every project with diligence and care, and we stand by our values of quality, integrity, accountability, and respect. Our business is almost solely built on referrals which speaks volumes of our client satisfaction and consistency. We hope you choose LeCut for your next project.

"We recently renovated both of our bathrooms and had an amazing experience with the crew. They were incredibly humble, clean, and professional throughout the entire process. They showed great attention to detail and were always responsive to any questions or requests we had. The team worked diligently every day until the job was done, and the results are fantastic. Recommendation: Make sure to order all materials and fixtures in advance—this really helps the crew work more efficiently and avoid delays. I highly recommend them for any job you’re considering, big or small. Their work ethic and professionalism truly stand out."

Liat L on April 2025

Our main goal in LeCut Construction is to make our clients happy and satisfied from all the stages of the project! We believe in good workmanship that's why our guys are very dedicated and diligent that's what makes our job much easier. LeCut Construction is a family-owned and operated contracting company serving the Bay Area. We pride ourselves in our detailed workmanship and exceptional customer service. When you choose LeCut to carry out your vision, you become part of the LeCut family. We treat every project with diligence and care, and we stand by our values of quality, integrity, accountability, and respect. Our business is almost solely built on referrals which speaks volumes of our client satisfaction and consistency. We hope you choose LeCut for your next project.

"We recently renovated both of our bathrooms and had an amazing experience with the crew. They were incredibly humble, clean, and professional throughout the entire process. They showed great attention to detail and were always responsive to any questions or requests we had. The team worked diligently every day until the job was done, and the results are fantastic. Recommendation: Make sure to order all materials and fixtures in advance—this really helps the crew work more efficiently and avoid delays. I highly recommend them for any job you’re considering, big or small. Their work ethic and professionalism truly stand out."

Liat L on April 2025


Building CA
1191 Camino Tassajara
5.00(
5
)
Approved Pro
Building CA
1191 Camino Tassajara
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
607 local quotes requested

We have the experience and dedication to get the job done right! Specializing in remodeling services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"Building CA did a fantastic job on my home renovation. I wanted to remodel my kitchen for years, but always felt overwhelmed by the process. The Building CA team made everything so easy. From explaining the plans, to material selection and the overall installation, they provided clarity and confidence every step of the way. My new cabinets, floors, countertops and fixtures are stunning. I get so many compliments on the quality craftsmanship and design. I highly recommend their services. Thank you Building CA!"

Kalie h on February 2024

We have the experience and dedication to get the job done right! Specializing in remodeling services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"Building CA did a fantastic job on my home renovation. I wanted to remodel my kitchen for years, but always felt overwhelmed by the process. The Building CA team made everything so easy. From explaining the plans, to material selection and the overall installation, they provided clarity and confidence every step of the way. My new cabinets, floors, countertops and fixtures are stunning. I get so many compliments on the quality craftsmanship and design. I highly recommend their services. Thank you Building CA!"

Kalie h on February 2024

...
Showing 1-10 of 972
The Union City, CA homeowners’ guide to guest house building services
From average costs to expert advice, get all the answers you need to get your job done.
WOMAN EXERCISING IN HOME GYM
Jul 31, 2025
Jul 31, 2025
Budget for the cost to build a home gym based on factors such as project complexity, labor, gym type, flooring, electrical work, and more.
A view of a bathroom
Jul 29, 2025
Jul 29, 2025
Learn how much you’ll pay for a heated bathroom floor by exploring cost factors like the system type, labor rates, and permit fees.
A fancy black sink in a modern kitchen
Jul 29, 2025
Jul 29, 2025
Discover how much it costs to install limestone countertops, exploring how square footage, labor rates, and countertop design affect your total costs.
GAME ROOM IN BASEMENT
Jul 27, 2025
Jul 27, 2025
Learn about game room cost factors such as gaming consoles, sound systems, furnishings, installation labor, and remodeling vs. renovating.
A girl playing with teddy bear while smiling mother and grandmother at kitchen island
Mar 31, 2025
Mar 31, 2025
Explore how much quartzite countertops cost based on factors such as their size, location, design, finish, and labor rates.
Interior view of sunroom
Jul 9, 2025
Jul 9, 2025
Budget for sunroom addition costs based on factors such as room type, site prep, professional labor, features, permits, prefab vs. custom designs, and more.
Share project details to get started.