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Addition to existing structure builders in Sunnyvale

Avatar for Green Mark Build, LLC

Green Mark Build, LLC

1717 Main Street, Suite 5630
4.80(
5
)
•Approved Pro

Green Mark Build, LLC

1717 Main Street, Suite 5630
4.80(
5
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

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 guarantee your satisfaction!

"The Best !"

Chieko M on April 2018

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 guarantee your satisfaction!

"The Best !"

Chieko M on April 2018

Avatar for GNF Contractors

GNF Contractors

PO Box 1372
4.36(
7
)
•Approved Pro

GNF Contractors

PO Box 1372
4.36(
7
)
•Approved Pro
Customers say: Quick response
5 years of experience
Free onsite estimate

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. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Substandard work still owe me money"

Mike C on February 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. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Substandard work still owe me money"

Mike C on February 2022

Avatar for Dwell+Develop+Design Inc

Dwell+Develop+Design Inc

6505 W Park Blvd Suite 306-281
5.00(
3
)
•Approved Pro

Dwell+Develop+Design Inc

6505 W Park Blvd Suite 306-281
5.00(
3
)
•Approved Pro
39 years of experience
Free onsite estimate

Dwell+Develop+Design has proudly served its customers with pride and integrity for 39 years. We are residential construction company specializing in remodeling and additions. We offer a turnkey service, including architectural plans, permits, and the entire construction process start to finish.

"We recently completed a full remodel project with Trey and Bob at Dwell Develop and Design, and the results were absolutely phenomenal. Every inch of the remodel reflects exceptional quality and attention to detail — it turned out even better than we imagined! From start to finish, Trey and Bob went above and beyond. The customer service was outstanding throughout, and their professionalism and craftsmanship are second to none. What really set them apart was how they welcomed our creativity — they truly allowed us to dream big and brought our visions to life with precision and care. We’re so impressed that we’ve already partnered with them again for our upcoming double garage and MIL apartment project. If you’re looking for a team that listens, collaborates, delivers top-tier work, and makes the entire process enjoyable, Trey and Bob at Dwell are the ones to call. We highly, highly recommend!"

Marsha N on August 2025

Dwell+Develop+Design has proudly served its customers with pride and integrity for 39 years. We are residential construction company specializing in remodeling and additions. We offer a turnkey service, including architectural plans, permits, and the entire construction process start to finish.

"We recently completed a full remodel project with Trey and Bob at Dwell Develop and Design, and the results were absolutely phenomenal. Every inch of the remodel reflects exceptional quality and attention to detail — it turned out even better than we imagined! From start to finish, Trey and Bob went above and beyond. The customer service was outstanding throughout, and their professionalism and craftsmanship are second to none. What really set them apart was how they welcomed our creativity — they truly allowed us to dream big and brought our visions to life with precision and care. We’re so impressed that we’ve already partnered with them again for our upcoming double garage and MIL apartment project. If you’re looking for a team that listens, collaborates, delivers top-tier work, and makes the entire process enjoyable, Trey and Bob at Dwell are the ones to call. We highly, highly recommend!"

Marsha N on August 2025

Avatar for Stewart Concepts, Inc.

Stewart Concepts, Inc.

P.O. Box 181
5.00(
18
)
•Approved Pro

Stewart Concepts, Inc.

P.O. Box 181
5.00(
18
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
29 years of experience

Stewart Concepts, Inc., is a family owned and operated business that has worked in East Dallas for over 20 years. Our family began the business to specialize in insurance claims for water, storm, and hail damage. We offer full roof replacements and home repairs for severe storm damage. We are also a full general contractor that specializes in custom renovations for bathrooms, kitchens, basements, closets, and much more. We pride ourselves on working directly with the homeowner to create their ideal home. Call today and we would be glad to schedule you for a consultation on your next project!

"Mike is true to his word, has great time management skills, and addressed any concerns or changes I wanted in a professional manner. He came by to check on each crew and made sure the work was up to standard. From all of the estimates, Mike had the most competitive bid and I am glad that I chose Stewart Concepts for the job. I high recommend Mike and Stewart Concepts. He is honest and fair and does a great job!"

Tina G on June 2021

Stewart Concepts, Inc., is a family owned and operated business that has worked in East Dallas for over 20 years. Our family began the business to specialize in insurance claims for water, storm, and hail damage. We offer full roof replacements and home repairs for severe storm damage. We are also a full general contractor that specializes in custom renovations for bathrooms, kitchens, basements, closets, and much more. We pride ourselves on working directly with the homeowner to create their ideal home. Call today and we would be glad to schedule you for a consultation on your next project!

"Mike is true to his word, has great time management skills, and addressed any concerns or changes I wanted in a professional manner. He came by to check on each crew and made sure the work was up to standard. From all of the estimates, Mike had the most competitive bid and I am glad that I chose Stewart Concepts for the job. I high recommend Mike and Stewart Concepts. He is honest and fair and does a great job!"

Tina G on June 2021

Sonart Construction Corp.

131 Empire Central Drive, Unit 128
4.63(
12
)
•Approved Pro

Sonart Construction Corp.

131 Empire Central Drive, Unit 128
4.63(
12
)
•Approved Pro
Customers say: Quality work
196 local quotes requested
12 years of experience

Sonart Construction Corp. has over15 years of experience in providing a variety of exterior and interior renovation services. We provide services to Palm Beach, Broward and Miami-Dade Counties.. We specialize in Bathroom Remodeling, Kitchen Remodeling, Flooring and the list goes on. Customer satisfaction is what determines our success, which is why we take a hands-on approach and keep the customer informed through every phase of the project. When interacting with our company, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your renovation needs. Give us a call today!

"I called Sonart construction to give me a bid remodeling a kitchen. I spoke to the project manager Ziv and he was very professional I then set up an in office meeting with Ziv we discussed our options and I was very pleased with how we all worked together with different ideas and we all came with the best kitchen design hat suits my needs and wants. Will definitely recommend to all family and friends."

Dorothy K on January 2022

Sonart Construction Corp. has over15 years of experience in providing a variety of exterior and interior renovation services. We provide services to Palm Beach, Broward and Miami-Dade Counties.. We specialize in Bathroom Remodeling, Kitchen Remodeling, Flooring and the list goes on. Customer satisfaction is what determines our success, which is why we take a hands-on approach and keep the customer informed through every phase of the project. When interacting with our company, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your renovation needs. Give us a call today!

"I called Sonart construction to give me a bid remodeling a kitchen. I spoke to the project manager Ziv and he was very professional I then set up an in office meeting with Ziv we discussed our options and I was very pleased with how we all worked together with different ideas and we all came with the best kitchen design hat suits my needs and wants. Will definitely recommend to all family and friends."

Dorothy K on January 2022

Wright RE and GC, LLC

9304 Comanche Ridge Dr
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Wright RE and GC, LLC

9304 Comanche Ridge Dr
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
185 local quotes requested
3 years of experience

We are a locally owned and operated company out of Ft Worth, Texas. We value honesty and integrity in all aspects of our business. We offer a variety of general contracting services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

We are a locally owned and operated company out of Ft Worth, Texas. We value honesty and integrity in all aspects of our business. We offer a variety of general contracting services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

Avatar for A2A Remodeling Services

A2A Remodeling Services

11439 Lanewood Circle
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

A2A Remodeling Services

11439 Lanewood Circle
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
7 years of experience
Free onsite estimate

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. We look forward to earning your business! We epitomize dynamism and forward-thinking in the construction industry, driven by an unwavering commitment to excellence. With a wealth of industry experience, our team of dedicated professionals brings unparalleled expertise to every project we embark on. Our relentless pursuit of top-quality construction solutions sets us apart as a leader in our field.

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. We look forward to earning your business! We epitomize dynamism and forward-thinking in the construction industry, driven by an unwavering commitment to excellence. With a wealth of industry experience, our team of dedicated professionals brings unparalleled expertise to every project we embark on. Our relentless pursuit of top-quality construction solutions sets us apart as a leader in our field.

Avatar for Together Design and Build, LLC

Together Design and Build, LLC

6000 S. CONGRESS AVENUE, SUITE 101
5.00(
7
)
•Approved Pro

Together Design and Build, LLC

6000 S. CONGRESS AVENUE, SUITE 101
5.00(
7
)
•Approved Pro
16 local quotes requested
5 years of experience

Together Design and Build is a full-service home remodeling company based in Austin, TX. We specialize in kitchen and bathroom remodels, room additions, and full-home renovations. From concept to completion, we deliver high-quality craftsmanship using premium materials from trusted suppliers. Our team of skilled designers and contractors brings even the most complex ideas to life with precision and care. Founded by two passionate builders, we believe construction is more than just business?it?s about creating spaces that improve lives. Every project is personalized, and every client is a partner. Whether it?s your dream kitchen or a full-home transformation, we?re ready to help you love your home again. Call us today at 833-383-2289.

"I had a great experience with Together Design & Build , they remodeled my bathroom and did a beautiful job. Connected me with a designer to help review the design and materials, and the renovation was completed on schedule and at a fair price."

Chen m on July 2025

Together Design and Build is a full-service home remodeling company based in Austin, TX. We specialize in kitchen and bathroom remodels, room additions, and full-home renovations. From concept to completion, we deliver high-quality craftsmanship using premium materials from trusted suppliers. Our team of skilled designers and contractors brings even the most complex ideas to life with precision and care. Founded by two passionate builders, we believe construction is more than just business?it?s about creating spaces that improve lives. Every project is personalized, and every client is a partner. Whether it?s your dream kitchen or a full-home transformation, we?re ready to help you love your home again. Call us today at 833-383-2289.

"I had a great experience with Together Design & Build , they remodeled my bathroom and did a beautiful job. Connected me with a designer to help review the design and materials, and the renovation was completed on schedule and at a fair price."

Chen m on July 2025

SUMAQ KAWSAY LLC

4700 Breckinridge Court
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

SUMAQ KAWSAY LLC

4700 Breckinridge Court
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
4 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. We look forward to earning your business!

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. We look forward to earning your business!

Avatar for Centurion's Construction and Renovation LLC

Centurion's Construction and Renovation LLC

1880 Canton St
5.00(
2
)
•Approved Pro

Centurion's Construction and Renovation LLC

1880 Canton St
5.00(
2
)
•Approved Pro
Customers say: Quick response
5 years of experience
Free onsite estimate

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. We look forward to earning your business! Book with us online or feel free to give us a call today!

"I am very satisfied with the service provided by Centurionâ s. Will definitely contract them for future projects."

Azucena V on December 2024

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. We look forward to earning your business! Book with us online or feel free to give us a call today!

"I am very satisfied with the service provided by Centurionâ s. Will definitely contract them for future projects."

Azucena V on December 2024

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FAQs for addition to existing structure building service projects in Sunnyvale, TX

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 Sunnyvale, TX 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
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