Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Claremont, 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.

Addition to existing structure builders in Claremont

Avatar for VLP Design Build Inc

VLP Design Build Inc

2484 E Lewiston St
5.00(
4
)
•Approved Pro

VLP Design Build Inc

2484 E Lewiston St
5.00(
4
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
23 years of experience

Here at VLP Design Build, Quality is our Goal! We're a locally family owned and operated company that values honesty and integrity, and stands behind our work. Our services are customized to the individual project, paying close attention to the details of each project and keeping communication through each stage of the job. We look forward to building long-term relationships with our clients!

"The cabinets turned out exactly as we wanted and Victor was very communicative throughout the entire process. Everything was laid out very clearly upfront so there were no surprise costs."

Laura M on November 2023

Here at VLP Design Build, Quality is our Goal! We're a locally family owned and operated company that values honesty and integrity, and stands behind our work. Our services are customized to the individual project, paying close attention to the details of each project and keeping communication through each stage of the job. We look forward to building long-term relationships with our clients!

"The cabinets turned out exactly as we wanted and Victor was very communicative throughout the entire process. Everything was laid out very clearly upfront so there were no surprise costs."

Laura M on November 2023

Avatar for Golan Remodeling, Inc.

Golan Remodeling, Inc.

20723 Chase Street
4.85(
17
)
•Approved Pro

Golan Remodeling, Inc.

20723 Chase Street
4.85(
17
)
•Approved Pro
Customers say: Quality work
20 years of experience
Free onsite estimate

Golan Remodeling, Inc. is one of the state's premier home improvement companies servicing the Los Angeles and Ventura Counties. We specialize in complete bathroom and kitchen detailed remodeling. We are committed to provide all of our customers with reasonable pricing, quality workmanship, and professional service. We are extremely professional and regardless of how big or small the project may be we always take pride in our company name and our work. For all of your home improvement needs Golan Remodeling, Inc. is above and beyond the rest.

"Golan Remodeling just finished a bathroom remodel for us, and we?re beyond impressed.The project manager was fantastic. He walked us through every step and made sure we were happy with the progress. The tile work and fixtures they installed are beautiful, and the whole bathroom feels like a spa now. The team was professional, clean, and respectful of our home. They are the best in Los Angeles. I?d give them 10 stars if I could!"

Mike C on March 2025

Golan Remodeling, Inc. is one of the state's premier home improvement companies servicing the Los Angeles and Ventura Counties. We specialize in complete bathroom and kitchen detailed remodeling. We are committed to provide all of our customers with reasonable pricing, quality workmanship, and professional service. We are extremely professional and regardless of how big or small the project may be we always take pride in our company name and our work. For all of your home improvement needs Golan Remodeling, Inc. is above and beyond the rest.

"Golan Remodeling just finished a bathroom remodel for us, and we?re beyond impressed.The project manager was fantastic. He walked us through every step and made sure we were happy with the progress. The tile work and fixtures they installed are beautiful, and the whole bathroom feels like a spa now. The team was professional, clean, and respectful of our home. They are the best in Los Angeles. I?d give them 10 stars if I could!"

Mike C on March 2025

DAM Ventures, Inc.

28851 Industry Drive
4.33(
87
)
•Approved Pro

DAM Ventures, Inc.

28851 Industry Drive
4.33(
87
)
•Approved Pro
Customers say: Quality work
9 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Very good customer service."

jay l on January 2022

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Very good customer service."

jay l on January 2022

Avatar for Balderas General Construction

Balderas General Construction

9424 51ST APT A
5.00(
3
)
•Approved Pro

Balderas General Construction

9424 51ST APT A
5.00(
3
)
•Approved Pro
20 years of experience
Free onsite estimate

Balderas General Construction is a trusted remodeling company dedicated to transforming homes and businesses with quality craftsmanship and attention to detail. Specializing in a wide range of renovation services—from kitchens and bathrooms to full interior and exterior makeovers—we deliver reliable, tailored solutions that bring your vision to life. With a strong focus on customer satisfaction, we make every project a smooth and successful experience.

"We hired Balderas General a construction for our bathroom remodel, and it was overall A positive and stress free experience. 100% re-hireable and recommended. "

Valerie R on September 2025

Balderas General Construction is a trusted remodeling company dedicated to transforming homes and businesses with quality craftsmanship and attention to detail. Specializing in a wide range of renovation services—from kitchens and bathrooms to full interior and exterior makeovers—we deliver reliable, tailored solutions that bring your vision to life. With a strong focus on customer satisfaction, we make every project a smooth and successful experience.

"We hired Balderas General a construction for our bathroom remodel, and it was overall A positive and stress free experience. 100% re-hireable and recommended. "

Valerie R on September 2025

Avatar for Embee & Associates, Inc.

Embee & Associates, Inc.

8010 Haven Avenue
4.50(
4
)
•Approved Pro

Embee & Associates, Inc.

8010 Haven Avenue
4.50(
4
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

Here at Embee & Associates, Inc., we pride ourselves in a job well done. With an eye for detail, we will help your dreams become realities so please contact us today for a fast and friendly service that you will not be disappointed in!!

"Overall my experience with this company was great! The work that was done was really really good! Our contractor who assisted us was Jose. We added a living space and master bedroom to our home. The additions done look as if they were part of my house this whole time. Honestly it looks way better than I expected. The only reason I rated the company a 4.5 was because there was always some kind of miscommunication between our contractor and his workers. Don t get me wrong, things were always resolved, Jose was great at that. But my recommendation to is to make sure communication is #1. That way the customer is not confused or left wondering what will happen next. There was an issue with his floor guy though, he was rude and unprofessional. BUT the reason I am mentioning this is not to put down the company but let you know that we expressed concern for this issue and it was resolved professionally by Jose and it never became an issue again. The quality of work was top notch! His workers were all pretty cool guys and we always felt comfortable of who was coming into our home to do the work. I highly recommend this company for your next big project😊👍🏼"

Victoria V on February 2020

Here at Embee & Associates, Inc., we pride ourselves in a job well done. With an eye for detail, we will help your dreams become realities so please contact us today for a fast and friendly service that you will not be disappointed in!!

"Overall my experience with this company was great! The work that was done was really really good! Our contractor who assisted us was Jose. We added a living space and master bedroom to our home. The additions done look as if they were part of my house this whole time. Honestly it looks way better than I expected. The only reason I rated the company a 4.5 was because there was always some kind of miscommunication between our contractor and his workers. Don t get me wrong, things were always resolved, Jose was great at that. But my recommendation to is to make sure communication is #1. That way the customer is not confused or left wondering what will happen next. There was an issue with his floor guy though, he was rude and unprofessional. BUT the reason I am mentioning this is not to put down the company but let you know that we expressed concern for this issue and it was resolved professionally by Jose and it never became an issue again. The quality of work was top notch! His workers were all pretty cool guys and we always felt comfortable of who was coming into our home to do the work. I highly recommend this company for your next big project😊👍🏼"

Victoria V on February 2020

Avatar for Socal Express Restoration and Construction Inc.

Socal Express Restoration and Construction Inc.

6860 Canby Avenue, Suite 114
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Socal Express Restoration and Construction Inc.

6860 Canby Avenue, Suite 114
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
5 years of experience
Free onsite estimate

We are an ethical, honest and professional company. We are easy to communicate with. Always working with you until the job is done right and to your specifications. When working with our company you can expect integrity, prompt service and superior customer service. Always leaving the job site clean . We take pride in our services and enjoy making clients repeat clients. You can count on us to get the job done right the first time. We will meet with you at your convenience and will not keep you waiting. Call us today for your free estimate. You'll be pleased you did. Thank you

We are an ethical, honest and professional company. We are easy to communicate with. Always working with you until the job is done right and to your specifications. When working with our company you can expect integrity, prompt service and superior customer service. Always leaving the job site clean . We take pride in our services and enjoy making clients repeat clients. You can count on us to get the job done right the first time. We will meet with you at your convenience and will not keep you waiting. Call us today for your free estimate. You'll be pleased you did. Thank you

Avatar for A&E General Builders Co

A&E General Builders Co

5800 HAMNER AVE SPC 126
5.00(
2
)
•Approved Pro

A&E General Builders Co

5800 HAMNER AVE SPC 126
5.00(
2
)
•Approved Pro
5 years of experience
Free onsite estimate

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"Excellent service quick and convenient did not take long at all very honest with work they do 100% recommend "

Nestor G on July 2025

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"Excellent service quick and convenient did not take long at all very honest with work they do 100% recommend "

Nestor G on July 2025

Avatar for OSHI Construction, Inc

OSHI Construction, Inc

10722 Arrow Route, Unit 304
4.93(
20
)
•Approved Pro

OSHI Construction, Inc

10722 Arrow Route, Unit 304
4.93(
20
)
•Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 local quotes requested

We pride our company on reliability, great communication, integrity, and quality work. We are experts in disaster recovery for restoring flooded bathrooms and fire charred kitchens. with the skills to perform large scale remodels and Structural Modifications such as Weight bearing wall removals for open concept conversions. We look forward to earning your business! Our mission at OSHI, is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! One Stop, stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product of Dream Home Quality. Call us today for a free Consultation 909 552 4041

"Work was timely and professional."

Michael B on May 2024

We pride our company on reliability, great communication, integrity, and quality work. We are experts in disaster recovery for restoring flooded bathrooms and fire charred kitchens. with the skills to perform large scale remodels and Structural Modifications such as Weight bearing wall removals for open concept conversions. We look forward to earning your business! Our mission at OSHI, is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! One Stop, stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product of Dream Home Quality. Call us today for a free Consultation 909 552 4041

"Work was timely and professional."

Michael B on May 2024

Avatar for Prime Construction Services, Inc.

Prime Construction Services, Inc.

865 S. Milliken Ave., Unit A
5.00(
2
)
•Approved Pro

Prime Construction Services, Inc.

865 S. Milliken Ave., Unit A
5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 years of experience

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of general contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! ************ VISIT OUR VIRTUAL TOUR ************** https://players.cupix.com/p/BEWLWLeq *************** COPY & PASTE THIS ADDRESS TO YOUR BROWSER

"Andrew Farias was very professional. He was extremely detailed and finished my ADU right within out agreed price. Andrew was always available to answer any questions and was always very responsive to my emails and texts. He kept me well informed at each phase of my project. The quality of his work was top notch and i feel he went above and beyond. My ADU turned out better than i could have imagined and i would absolutely hire him again. I highly recommend Andrew and Prime Construction ."

Kimberly N on March 2022

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of general contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! ************ VISIT OUR VIRTUAL TOUR ************** https://players.cupix.com/p/BEWLWLeq *************** COPY & PASTE THIS ADDRESS TO YOUR BROWSER

"Andrew Farias was very professional. He was extremely detailed and finished my ADU right within out agreed price. Andrew was always available to answer any questions and was always very responsive to my emails and texts. He kept me well informed at each phase of my project. The quality of his work was top notch and i feel he went above and beyond. My ADU turned out better than i could have imagined and i would absolutely hire him again. I highly recommend Andrew and Prime Construction ."

Kimberly N on March 2022

M & R Essential Contractors

239 South Orange Avenue
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

M & R Essential Contractors

239 South Orange Avenue
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
7 years of experience
Free onsite estimate

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other 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 guaranteeing your satisfaction!

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other 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 guaranteeing your satisfaction!

...
Showing 1-10 of 989
FAQs for addition to existing structure building service projects in Claremont, CA

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The Claremont, 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
  • A renovated kitchen with a waterfall island

    HomeAdvisor’s DIY Kitchen Remodel Cost Guide looks at the cost of buying supplies and doing the work yourself. Find the key cost factors and how to cut expenses.

  • Secret room within bookcase

    HomeAdvisor's expert guide walks you through the cost to build a secret room, whether you're creating a safe room for security or a fun space to fulfil your childhood fantasies. Use this guide to help plan your secret room project and explore room, concea

  • outdoor patio bar

    Explore the cost to build a bar in your home and learn how materials, wet vs. dry bars, and labor costs influence the total price of your project.