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Addition to existing structure builders in Duarte

Avatar for Machaon Construction

Machaon Construction

3045 La Coronoa Avenue
4.90(
5
)
Approved Pro

Machaon Construction

3045 La Coronoa Avenue
4.90(
5
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

At Machaon Construction, we pride ourselves on being the best Construction company in the area. We have built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let us get started!

"Stellar job, fabulous company, excellent experience."

Donna B on August 2020

At Machaon Construction, we pride ourselves on being the best Construction company in the area. We have built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let us get started!

"Stellar job, fabulous company, excellent experience."

Donna B on August 2020


Avatar for VULCAN BUILD INC

VULCAN BUILD INC

8549 WILSHIRE BLVD # 3189
5.00(
23
)
Approved Pro

VULCAN BUILD INC

8549 WILSHIRE BLVD # 3189
5.00(
23
)
Approved Pro
Customers say: Quick response
7 years of experience
Free onsite estimate

VULCAN BUILD 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 recently had a fantastic experience with Vulcan company. Michael, the project manager, was top-notch. They worked on my bathroom, bedroom, kitchen, living room, and porch. The project was really budget-friendly, and their communication was excellent. They kept me in the loop the entire time with no surprises. The work quality was outstanding, with great attention to detail. Michael and his team were professional and efficient!"

Margot C on August 2025

VULCAN BUILD 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 recently had a fantastic experience with Vulcan company. Michael, the project manager, was top-notch. They worked on my bathroom, bedroom, kitchen, living room, and porch. The project was really budget-friendly, and their communication was excellent. They kept me in the loop the entire time with no surprises. The work quality was outstanding, with great attention to detail. Michael and his team were professional and efficient!"

Margot C on August 2025


Avatar for Beverly Builders Group

Beverly Builders Group

6851 Laurel Canyon Blvd #3
4.96(
58
)
Approved Pro

Beverly Builders Group

6851 Laurel Canyon Blvd #3
4.96(
58
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
9 years of experience

General contractor specializing in residential homes, design & build contractor. Call us today for a free estimate!

"We just had our kitchen completely renovated by Beverly Builders Group, and we couldn't be happier with the end result! Lawrence was our contractor and he fully brought our vision to life!!! My family and I went out of the country while the kitchen renovations were done and Lawrence took care of everything for us. He was super easy to get in contact with when we needed him or had any questions. He honestly went above and beyond for us and I loved how transparent he was about the job along the way. I've worked with other contractors in the past that weren't so honest and it was such a nice experience this time around. Emily was our project coordinator and designer and kept us updated daily on what was happening. We were always in communication with her and she overlooked our shopping list of all appliances so nothing was missed on our installation dates. Their team was amazing and I highly recommend them to anyone who wants the best! We were so happy with them that our master bathroom"

Rafael M on December 2024

General contractor specializing in residential homes, design & build contractor. Call us today for a free estimate!

"We just had our kitchen completely renovated by Beverly Builders Group, and we couldn't be happier with the end result! Lawrence was our contractor and he fully brought our vision to life!!! My family and I went out of the country while the kitchen renovations were done and Lawrence took care of everything for us. He was super easy to get in contact with when we needed him or had any questions. He honestly went above and beyond for us and I loved how transparent he was about the job along the way. I've worked with other contractors in the past that weren't so honest and it was such a nice experience this time around. Emily was our project coordinator and designer and kept us updated daily on what was happening. We were always in communication with her and she overlooked our shopping list of all appliances so nothing was missed on our installation dates. Their team was amazing and I highly recommend them to anyone who wants the best! We were so happy with them that our master bathroom"

Rafael M on December 2024


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 HD Framing Construction

HD Framing Construction

11034 Townley Dr
5.00(
2
)
Approved Pro

HD Framing Construction

11034 Townley Dr
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
9 years of experience

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. Call us today.

"I highly recommend HD Framing, I am extremely satisfied with their work. Their work ethic is on another level. If youâ re looking to make an addition to your home and increase the value of your property then HD framing is the one. I want to thank the general contractor Henry for staying on top of things and always keeping me up to date on everything. â­ ï¸ â­ ï¸ â­ ï¸ â­ ï¸ â­ ï¸"

Joel J on September 2024

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. Call us today.

"I highly recommend HD Framing, I am extremely satisfied with their work. Their work ethic is on another level. If youâ re looking to make an addition to your home and increase the value of your property then HD framing is the one. I want to thank the general contractor Henry for staying on top of things and always keeping me up to date on everything. â­ ï¸ â­ ï¸ â­ ï¸ â­ ï¸ â­ ï¸"

Joel J on September 2024


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 B Cutler Inc

B Cutler Inc

5040 Kimball Street
5.00(
2
)
Approved Pro

B Cutler Inc

5040 Kimball Street
5.00(
2
)
Approved Pro
Customers say: Quick response
3 years of experience
Free onsite estimate

Licensed & Bonded Contractor Specializing In Fire, Water, & Mold Damage Remediation & Restoration. Accessory Dwelling Units (ADUs) & residential & commercial additions. Veteran Owned Small Business With 45+ Years Of Family Experience As Pasadena Based Designers & Builders

"There was mold in my closet and I knew it was probably not a great idea to live with it. Chris Gibbons gave me clear and useful information about the options and trade-offs and broke through the noise. Seems like the other "experts" and insurance people I talked to were just adding confusion. Recommend Paul Davis Pasadena highly if you have mold."

Leonard M on July 2023

Licensed & Bonded Contractor Specializing In Fire, Water, & Mold Damage Remediation & Restoration. Accessory Dwelling Units (ADUs) & residential & commercial additions. Veteran Owned Small Business With 45+ Years Of Family Experience As Pasadena Based Designers & Builders

"There was mold in my closet and I knew it was probably not a great idea to live with it. Chris Gibbons gave me clear and useful information about the options and trade-offs and broke through the noise. Seems like the other "experts" and insurance people I talked to were just adding confusion. Recommend Paul Davis Pasadena highly if you have mold."

Leonard M on July 2023


RET Construction Corp

8035 Linwalt Street
4.98(
23
)
Approved Pro

RET Construction Corp

8035 Linwalt Street
4.98(
23
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
21 years of experience

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"Kevin brought our dream ADU to life! He is an amazing contractor who pays great attention to detail and he has several licenses which insured his work was of the highest quality. He REALLY listens to what the customer wants and he delivers! We are SO pleased with our new ADU and we offer him our highest recommendation!"

gabriella p on September 2022

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"Kevin brought our dream ADU to life! He is an amazing contractor who pays great attention to detail and he has several licenses which insured his work was of the highest quality. He REALLY listens to what the customer wants and he delivers! We are SO pleased with our new ADU and we offer him our highest recommendation!"

gabriella p on September 2022


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

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FAQs for addition to existing structure building service projects in Duarte, 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 Duarte, 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.