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Addition to existing structure builders in Boulder Creek

Avatar for Unique Home Design & Remodeling
Unique Home Design & Remodeling
303 Twin Dolphin Drive, 6th Floor
4.83(
33
)
Approved Pro
Unique Home Design & Remodeling
303 Twin Dolphin Drive, 6th Floor
4.83(
33
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
30 local quotes requested

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.

"Deeply Disappointed ? Poor Execution, Lack of Communication, and Mismanagement I hired Unique Home Design & Remodel around August/September for a major home renovation project?an ~800 sqft addition and kitchen remodel. Unfortunately, the experience has been nothing short of frustrating and disappointing. From the very beginning, it was clear that Unique overpromises and severely underdelivers. The project manager, Tal Barun, and the subcontractor, Rafael, failed to maintain even the most basic level of professionalism. Once the work began, we heard nothing from Unique unless it was about collecting checks. No weekly updates, no clear plans, and a lot of confusion. Communication was abysmal?we had to chase them down for responses that came days later, if at all. The craftsmanship? Poor at best. The subcontractor appeared completely unprepared and unequipped to handle a project of this size. We were essentially left to deal with Rafael directly, which made things even worse. Foundation"

Kartik M on April 2025

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.

"Deeply Disappointed ? Poor Execution, Lack of Communication, and Mismanagement I hired Unique Home Design & Remodel around August/September for a major home renovation project?an ~800 sqft addition and kitchen remodel. Unfortunately, the experience has been nothing short of frustrating and disappointing. From the very beginning, it was clear that Unique overpromises and severely underdelivers. The project manager, Tal Barun, and the subcontractor, Rafael, failed to maintain even the most basic level of professionalism. Once the work began, we heard nothing from Unique unless it was about collecting checks. No weekly updates, no clear plans, and a lot of confusion. Communication was abysmal?we had to chase them down for responses that came days later, if at all. The craftsmanship? Poor at best. The subcontractor appeared completely unprepared and unequipped to handle a project of this size. We were essentially left to deal with Rafael directly, which made things even worse. Foundation"

Kartik M on April 2025


Avatar for G M J Construction Inc.
G M J Construction Inc.
2582 Amethyst Drive
5.00(
13
)
Approved Pro
G M J Construction Inc.
2582 Amethyst Drive
5.00(
13
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
11 years of experience

GMJ construction Is one of the best construction company in the bay area, we focus on providing our customers A Great experience, we provide high-quality project management and excellent finish Work, We are design and build firm,We specialize in new construction home, room addition, kitchen, bathroom and custom work , Feel free to contact us today for a free consultation meeting with one of our great project managers

"GMJ is the perfect spot if you are after an outstanding Eichler home. Joseph communication skills are top-notch, and he understood my needs perfectly. They have incredibly creative and brilliant minds and really grasp what the customer desires. Thanks a bunch, Joseph, for all your assistance! I highly recommend this company to anyone in search of the best Eichler Contractor in Sunnyvale!"

Mike K on May 2024

GMJ construction Is one of the best construction company in the bay area, we focus on providing our customers A Great experience, we provide high-quality project management and excellent finish Work, We are design and build firm,We specialize in new construction home, room addition, kitchen, bathroom and custom work , Feel free to contact us today for a free consultation meeting with one of our great project managers

"GMJ is the perfect spot if you are after an outstanding Eichler home. Joseph communication skills are top-notch, and he understood my needs perfectly. They have incredibly creative and brilliant minds and really grasp what the customer desires. Thanks a bunch, Joseph, for all your assistance! I highly recommend this company to anyone in search of the best Eichler Contractor in Sunnyvale!"

Mike K on May 2024


Avatar for Royalty Builders, Inc.
Royalty Builders, Inc.
228 Hamilton Ave 3rd Floor
5.00(
14
)
Approved Pro
Royalty Builders, Inc.
228 Hamilton Ave 3rd Floor
5.00(
14
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

Royalty Builders 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 customer's interests and make their concerns the basis of our business. Please give us a call today 855-744-4424

"Bathroom remodeling Panel upgrade I want to tank royalty builders for the new bathroom the design and the crew was great we are happy with out new bathroom"

Vilma T on June 2024

Royalty Builders 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 customer's interests and make their concerns the basis of our business. Please give us a call today 855-744-4424

"Bathroom remodeling Panel upgrade I want to tank royalty builders for the new bathroom the design and the crew was great we are happy with out new bathroom"

Vilma T on June 2024


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 Bella Casa Builders, Inc.
Bella Casa Builders, Inc.
2535 Sunflower Cir
5.00(
1
)
Approved Pro
Bella Casa Builders, Inc.
2535 Sunflower Cir
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

ABOUT US Bella Casa is a Design/Build custom home builder serving the Silicon Valley Area. We take pride in delivering the custom home or remodeling project of your dreams. Unlike other firms, the creative design, management, and project supervision are done by the founder. This ensures that your home will be ready for you on time, on budget, and done beautifully.

"One of the biggest benefits is the fact that they have both the home design and the building aspects of the project. The owner of the business is very creative and even after the design is completed, he still brings improvments to the design as it goes along!"

Homeowner on August 2009

ABOUT US Bella Casa is a Design/Build custom home builder serving the Silicon Valley Area. We take pride in delivering the custom home or remodeling project of your dreams. Unlike other firms, the creative design, management, and project supervision are done by the founder. This ensures that your home will be ready for you on time, on budget, and done beautifully.

"One of the biggest benefits is the fact that they have both the home design and the building aspects of the project. The owner of the business is very creative and even after the design is completed, he still brings improvments to the design as it goes along!"

Homeowner on August 2009


C M Builders General Construction Inc.
9227 Solana Drive
4.88(
4
)
Approved Pro
C M Builders General Construction Inc.
9227 Solana Drive
4.88(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 local quotes requested

C M BUILDERS GENERAL CONSTRUCTION INCis a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have 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!

"The entire team was very professional, kept everything clean and neat, and they met the time frame even though it was an extremely difficult job."

Antonio L on March 2025

C M BUILDERS GENERAL CONSTRUCTION INCis a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have 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!

"The entire team was very professional, kept everything clean and neat, and they met the time frame even though it was an extremely difficult job."

Antonio L on March 2025


Avatar for Nicholas Bertram
Nicholas Bertram
151 Atherton Loop
New on HomeAdvisorNew on Angi
Approved Pro
Nicholas Bertram
151 Atherton Loop
New on AngiNew 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 integrity. From remodels to decks, ADUs and additions, 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 integrity. From remodels to decks, ADUs and additions, we strive to do the right thing and make your home dreams a reality!


Avatar for Aria Custom Home Builder
Aria Custom Home Builder
6376 Mayo Drive
5.00(
2
)
Approved Pro
Aria Custom Home Builder
6376 Mayo Drive
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers 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.

"They responded in a timely manner and were able to get the job done quickly to the date we asked with great expertise work. We were very satisfied and will use them again for another project."

Sheri A on October 2019

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers 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.

"They responded in a timely manner and were able to get the job done quickly to the date we asked with great expertise work. We were very satisfied and will use them again for another project."

Sheri A on October 2019


Avatar for Major One Construction, Inc.
Major One Construction, Inc.
2845 Moorpark Avenue
New on HomeAdvisorNew on Angi
Approved Pro
Major One Construction, Inc.
2845 Moorpark Avenue
New on AngiNew on HomeAdvisor
Approved Pro
22 years of experience
Free onsite estimate

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.

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.


Avatar for ICON Home Builders, Inc.
ICON Home Builders, Inc.
2375 Zanker Rd, Suite 225
5.00(
2
)
Approved Pro
ICON Home Builders, Inc.
2375 Zanker Rd, Suite 225
5.00(
2
)
Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

ICON Home Builders is a full-service general contractor specializing in high-quality home remodels, renovations, and custom builds in the San Francisco Bay Area. We transform homes with custom kitchens, luxurious bathrooms, full renovations, and home additions, combining expert craftsmanship and personalized design. Known for our attention to detail, clear communication, and efficient project management, we ensure your home reflects your vision. We serve Santa Clara, San Mateo, Alameda, and Contra Costa counties, and are EPA Lead-Safe Certified and CSLB Licensed (#1102095). Whether you're looking for a complete home transformation or a specific remodel, ICON Home Builders delivers on time and within budget, ensuring the highest standards in every project.

"Danny's expertise shone through from our very first meeting, where he presented an impressive initial design that immediately instilled confidence in the project's outcome. His meticulous planning and efficient execution made the process nearly effortless for me. Throughout the project, Danny demonstrated exceptional professionalism: He patiently addressed all my questions, ensuring I felt informed and comfortable with each decision. He took charge of the shopping process, offering valuable professional advice on material selections. When the initially chosen tile color didn't translate well from the store to my home, Danny proactively brought a sample for us to evaluate in situ. This attention to detail allowed us to pivot and select a more suitable option that enhanced the overall aesthetic. The final result exceeded my expectations, with Danny's design acumen particularly evident in the enlarged shower space. His thoughtful approach to space utilization has significantly improved the functionality and appeal of the room. Danny's combination of design talent, project management skills, and client-focused service resulted in a fantastic outcome that I'm thrilled with"

Yu Z on September 2024

ICON Home Builders is a full-service general contractor specializing in high-quality home remodels, renovations, and custom builds in the San Francisco Bay Area. We transform homes with custom kitchens, luxurious bathrooms, full renovations, and home additions, combining expert craftsmanship and personalized design. Known for our attention to detail, clear communication, and efficient project management, we ensure your home reflects your vision. We serve Santa Clara, San Mateo, Alameda, and Contra Costa counties, and are EPA Lead-Safe Certified and CSLB Licensed (#1102095). Whether you're looking for a complete home transformation or a specific remodel, ICON Home Builders delivers on time and within budget, ensuring the highest standards in every project.

"Danny's expertise shone through from our very first meeting, where he presented an impressive initial design that immediately instilled confidence in the project's outcome. His meticulous planning and efficient execution made the process nearly effortless for me. Throughout the project, Danny demonstrated exceptional professionalism: He patiently addressed all my questions, ensuring I felt informed and comfortable with each decision. He took charge of the shopping process, offering valuable professional advice on material selections. When the initially chosen tile color didn't translate well from the store to my home, Danny proactively brought a sample for us to evaluate in situ. This attention to detail allowed us to pivot and select a more suitable option that enhanced the overall aesthetic. The final result exceeded my expectations, with Danny's design acumen particularly evident in the enlarged shower space. His thoughtful approach to space utilization has significantly improved the functionality and appeal of the room. Danny's combination of design talent, project management skills, and client-focused service resulted in a fantastic outcome that I'm thrilled with"

Yu Z on September 2024

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Addition to existing structure building services FAQs

Building an in-law suite takes between two and seven months. Converting an existing basement, attic, or room can be done in about two months. Constructing a new addition or detached suite often takes four to five months for construction, plus one to two months for permits. The bigger the suite, the longer it will take. 

Yes, you can build an in-law suite in your backyard if you meet local building codes and zoning regulations. An in-law suite often occupies 300 to 800 square feet. Be sure to follow size restrictions, utility separations, and entrance requirements. Hiring a qualified contractor ensures you meet all regulatory requirements because they can pull permits, double-check local code, and gather other skilled pros to work on your suite. 

The 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.
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An in-law suite is a great solution for people who have family visiting often. Explore how much an in-law suite costs and prep to build yours.
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Discover how much a log cabin costs to build, exploring how factors like its size, site prep, utilities, finishes, and labor rates affect the total price.
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Work out the full cost to repair earthquake damage based on the type of damage, including foundation issues, utility lines, and cracked walls.
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