Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Ben Lomond, 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 Ben Lomond

Avatar for Square Three, Inc.

Square Three, Inc.

830 Stewart Dr #272
4.92(
6
)
Approved Pro

Square Three, Inc.

830 Stewart Dr #272
4.92(
6
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. Our senior team has 10-20 years of experience specifically in the SF Bay Area. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Sanjeev has a solid team working for him that is very capable and deliver quality work. Very flexible and always trying to accommodate our needs even with unexpected changes to the project plan. Highly recommended."

Jannik O on April 2022

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. Our senior team has 10-20 years of experience specifically in the SF Bay Area. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Sanjeev has a solid team working for him that is very capable and deliver quality work. Very flexible and always trying to accommodate our needs even with unexpected changes to the project plan. Highly recommended."

Jannik O on April 2022


Avatar for Nicholas Bertram

Nicholas Bertram

394 Hames Rd
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Nicholas Bertram

394 Hames Rd
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
15 years of experience
Free onsite estimate

Bertram Builders LLC is a locally owned, Santa Cruz county based general building contractor that specializes in residential construction and framing. We are a team of hardworkers who take pride in quality and honesty. From full-on interior remodels and ground-up construction, to decks, bathroom remodels and ADU's we strive to do the right thing and make your home dreams a reality.

Bertram Builders LLC is a locally owned, Santa Cruz county based general building contractor that specializes in residential construction and framing. We are a team of hardworkers who take pride in quality and honesty. From full-on interior remodels and ground-up construction, to decks, bathroom remodels and ADU's we strive to do the right thing and make your home dreams a reality.


Avatar for DARCO, LLC

DARCO, LLC

999 West Taylor Street, Suite A
4.90(
5
)
Approved Pro

DARCO, LLC

999 West Taylor Street, Suite A
4.90(
5
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

Darco Construction is a premier full-service construction company, specializing in custom home builds, remodels, and commercial projects. With a commitment to excellence, we bring your vision to life with top-tier craftsmanship, transparent budgeting, and meticulous attention to detail. From architectural design to project completion, our experienced team ensures a seamless process, delivering beautiful and functional spaces that exceed expectations.

"DARCO did a wonderful job on my kitchen/ dining space remodel. It is even more beautiful than I imagined, and everything was done with such high quality. I love sharing how beautiful it is with family, friends and neighbors!"

Judy M on November 2022

Darco Construction is a premier full-service construction company, specializing in custom home builds, remodels, and commercial projects. With a commitment to excellence, we bring your vision to life with top-tier craftsmanship, transparent budgeting, and meticulous attention to detail. From architectural design to project completion, our experienced team ensures a seamless process, delivering beautiful and functional spaces that exceed expectations.

"DARCO did a wonderful job on my kitchen/ dining space remodel. It is even more beautiful than I imagined, and everything was done with such high quality. I love sharing how beautiful it is with family, friends and neighbors!"

Judy M on November 2022


Avatar for Hamilton Construction

Hamilton Construction

421 Lighthouse Ave
4.80(
5
)
Approved Pro

Hamilton Construction

421 Lighthouse Ave
4.80(
5
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 years of experience

Justin Hamilton with Hamilton Construction would like to provide you with the same exceptional addition, remodel and deck service that our current customers in the Santa Cruz area enjoy. Call us today!

"My husband and I are so happy with the work they did. Our front porch looks great. I also hired them to fix a wall of our rooftop deck. I have recommended Justin to a neighbor and he will be working on his house soon."

Lisa P on October 2018

Justin Hamilton with Hamilton Construction would like to provide you with the same exceptional addition, remodel and deck service that our current customers in the Santa Cruz area enjoy. Call us today!

"My husband and I are so happy with the work they did. Our front porch looks great. I also hired them to fix a wall of our rooftop deck. I have recommended Justin to a neighbor and he will be working on his house soon."

Lisa P on October 2018


MTM Building Group

900 E Hamilton Ave, Unit 100
4.08(
6
)
Approved Pro

MTM Building Group

900 E Hamilton Ave, Unit 100
4.08(
6
)
Approved Pro
Customers say: Quick response
19 years of experience
Free onsite estimate

With more than 30 years in the Design/Build, Custom Home, and Home Remodeling business, we manage each project from design & permitting through completion to control change orders, budgets and time frames. We have all major trades in-house, which makes project coordination more manageable than bringing in "low bidder" subcontractors. We offer financing and are pre-approved with major banks for your convenience. We offer Fixed as well as Time & Materials contracts. Most of our clients prefer the T&M contract option because of its transparency and flexibility. We offer a complimentary consultation to evaluate and present a plan of action with milestones for your review.

"Mike and Nancy are extremely helpfully and educating the customers. They do a great job transcribing needs and wants into a workable budget."

Carrie Y on June 2017

With more than 30 years in the Design/Build, Custom Home, and Home Remodeling business, we manage each project from design & permitting through completion to control change orders, budgets and time frames. We have all major trades in-house, which makes project coordination more manageable than bringing in "low bidder" subcontractors. We offer financing and are pre-approved with major banks for your convenience. We offer Fixed as well as Time & Materials contracts. Most of our clients prefer the T&M contract option because of its transparency and flexibility. We offer a complimentary consultation to evaluate and present a plan of action with milestones for your review.

"Mike and Nancy are extremely helpfully and educating the customers. They do a great job transcribing needs and wants into a workable budget."

Carrie Y on June 2017


OM & K BUILDERS COMPANY

14495 Russo Rd # 1140093
5.00(
1
)
Approved Pro

OM & K BUILDERS COMPANY

14495 Russo Rd # 1140093
5.00(
1
)
Approved Pro
Free onsite estimate

OM & K BUILDERS COMPANY is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"We had a great experience with OM&K. They were on time, on budget and worked day and night (and weekends) until the job was done. Great outcome and easy to work with. Definitely recommend. "

david h on September 2025

OM & K BUILDERS COMPANY is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"We had a great experience with OM&K. They were on time, on budget and worked day and night (and weekends) until the job was done. Great outcome and easy to work with. Definitely recommend. "

david h on September 2025


Avatar for BE HOME REMODELING INC

BE HOME REMODELING INC

282 Bayview Ave
4.95(
11
)
Approved Pro

BE HOME REMODELING INC

282 Bayview Ave
4.95(
11
)
Approved Pro
Customers say: Quick response
488 local quotes requested
1 years of experience

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.

"My journey began when I met Mario from Be Home Remodeling. I started with just one bathroom remodel, and I was immediately impressed by the professionalism, attention to detail, and high-quality craftsmanship he and his team delivered. The communication throughout the project was clear and consistent, and they made sure every step met my expectations. Since then, I?ve trusted Be Home Remodeling with additional projects and have always been more than satisfied with the results. Highly recommend Mario and his team to anyone looking for reliable and high-quality construction work"

nate b on July 2025

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.

"My journey began when I met Mario from Be Home Remodeling. I started with just one bathroom remodel, and I was immediately impressed by the professionalism, attention to detail, and high-quality craftsmanship he and his team delivered. The communication throughout the project was clear and consistent, and they made sure every step met my expectations. Since then, I?ve trusted Be Home Remodeling with additional projects and have always been more than satisfied with the results. Highly recommend Mario and his team to anyone looking for reliable and high-quality construction work"

nate b on July 2025


Avatar for Rose Remodeling & Design Inc.

Rose Remodeling & Design Inc.

899 Persimmon Ave
5.00(
13
)
Approved Pro

Rose Remodeling & Design Inc.

899 Persimmon Ave
5.00(
13
)
Approved Pro
Customers say: Quick response
19 local quotes requested
2 years of experience

Rose Remodeling & Design Inc. 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.

"I had a second storey addition completed by Rose Remodeling, and the results are truly amazing. The team did an outstanding job blending the new structure seamlessly with the existing architecture so that it looks like it was always part of the house. Adir guided us through every step, answered all of our questions, and kept the process stress-free. We now have the extra space we needed, and the work exceeded all of our expectations. Highly recommend their services."

Romeo D on October 2025

Rose Remodeling & Design Inc. 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.

"I had a second storey addition completed by Rose Remodeling, and the results are truly amazing. The team did an outstanding job blending the new structure seamlessly with the existing architecture so that it looks like it was always part of the house. Adir guided us through every step, answered all of our questions, and kept the process stress-free. We now have the extra space we needed, and the work exceeded all of our expectations. Highly recommend their services."

Romeo D on October 2025


Avatar for J J Construction & Remodeling, Inc.

J J Construction & Remodeling, Inc.

10471 E Hills Ct
5.00(
2
)
Approved Pro

J J Construction & Remodeling, Inc.

10471 E Hills Ct
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
36 local quotes requested

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Over 10 years experience in the Contracting Industry. Fully licensed and Insured. Family owned and operated business.

"Our goal was to build a structurally safe garage storage loft. Juan and Julian were a great team to work with. They were very professional and organized- they gave us a quote and clearly communicated what the plan would look like from beginning to end. They guided us on the items that we needed to buy prior to starting the work in order to complete the project within the estimated time. They suggested modifications that were minor fixes but made the layout make more sense in terms of placement. Their crew finished a day ahead of schedule. They kept a clean work site and the quality of the results were great. I would gladly work with them on another home project in the future!"

Anthony G on April 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Over 10 years experience in the Contracting Industry. Fully licensed and Insured. Family owned and operated business.

"Our goal was to build a structurally safe garage storage loft. Juan and Julian were a great team to work with. They were very professional and organized- they gave us a quote and clearly communicated what the plan would look like from beginning to end. They guided us on the items that we needed to buy prior to starting the work in order to complete the project within the estimated time. They suggested modifications that were minor fixes but made the layout make more sense in terms of placement. Their crew finished a day ahead of schedule. They kept a clean work site and the quality of the results were great. I would gladly work with them on another home project in the future!"

Anthony G on April 2025


Avatar for R H Custom Remodeling

R H Custom Remodeling

20149 Thompson Road
5.00(
14
)
Approved Pro

R H Custom Remodeling

20149 Thompson Road
5.00(
14
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
38 years of experience

Thanks for considering R.H Custom Building and Remodeling for your remodel or building project. As a licensed contractor since 1993, R.H Custom Building and Remodeling has specialized in the residential remodeling industry. From design and materials selection, through construction to final trim work, your project is our priority. All phases of Residential Construction are handled: New Homes, Additions, Kitchen and Bath, and Structural Alterations. Call R.H. Custom Building and Remodeling today at 408-354-1911, or Email rich@rhcustombr.com and let’s get your project started.

"Rich Horton is great to work with. He has excellent project management and technical skills. Our project was a complete teardown and rebuild. He managed all aspects of this project with adroitness, graciousness and good humor. Rich always had a firm hand on all the details."

Liz E on May 2024

Thanks for considering R.H Custom Building and Remodeling for your remodel or building project. As a licensed contractor since 1993, R.H Custom Building and Remodeling has specialized in the residential remodeling industry. From design and materials selection, through construction to final trim work, your project is our priority. All phases of Residential Construction are handled: New Homes, Additions, Kitchen and Bath, and Structural Alterations. Call R.H. Custom Building and Remodeling today at 408-354-1911, or Email rich@rhcustombr.com and let’s get your project started.

"Rich Horton is great to work with. He has excellent project management and technical skills. Our project was a complete teardown and rebuild. He managed all aspects of this project with adroitness, graciousness and good humor. Rich always had a firm hand on all the details."

Liz E on May 2024

...
Showing 1-10 of 1003
FAQs for addition to existing structure building service projects in Ben Lomond, 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 Ben Lomond, 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.

  • 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.