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Find Addition to existing structure builders in Copperopolis

Avatar for D I Y Design & Consulting

D I Y Design & Consulting

6117 Friedman Way
4.80(
5
)
•Approved Pro

D I Y Design & Consulting

6117 Friedman Way
4.80(
5
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 local quotes requested

We pride our company on reliability, great communication, integrity and quality work. We are experts in our renovations remodeling work. We do our best to keep you as informed as we can on your particular task or project. We look forward to working with you.

"They communicate well"

Joe A on November 2022

We pride our company on reliability, great communication, integrity and quality work. We are experts in our renovations remodeling work. We do our best to keep you as informed as we can on your particular task or project. We look forward to working with you.

"They communicate well"

Joe A on November 2022

Jack R Wilson Jr

PO BOX 1337
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Jack R Wilson Jr

PO BOX 1337
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
10 local quotes requested
47 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and 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 every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

Wilk Construction, Inc.

PO Box 1041
4.92(
8
)
•Approved Pro

Wilk Construction, Inc.

PO Box 1041
4.92(
8
)
•Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 local quotes requested

Cornerstone Construction is Tuolumne County's premiere residential and commercial remodeling and renovation company. Our mission is providing quality work and superior service each and every time we get in front of one of our customers. We provide our customers with innovative ideas, using the most current products on the market. Our detail-oriented team works together hand-in-hand to cater to the individual needs of each of our customers on every installation. Our dedicated and professional employees are committed to doing their jobs efficiently and correctly. In fact, most of our new customers are referrals from other satisfied clients. Whether you need your entire home renovated or just one room remodeled, call Cornerstone Construction today!

"Sham and his staff from flooring, sheetrock, tile and finish carpentry were a pleasure to work with. True professionals and great customer service!"

Drew M on February 2023

Cornerstone Construction is Tuolumne County's premiere residential and commercial remodeling and renovation company. Our mission is providing quality work and superior service each and every time we get in front of one of our customers. We provide our customers with innovative ideas, using the most current products on the market. Our detail-oriented team works together hand-in-hand to cater to the individual needs of each of our customers on every installation. Our dedicated and professional employees are committed to doing their jobs efficiently and correctly. In fact, most of our new customers are referrals from other satisfied clients. Whether you need your entire home renovated or just one room remodeled, call Cornerstone Construction today!

"Sham and his staff from flooring, sheetrock, tile and finish carpentry were a pleasure to work with. True professionals and great customer service!"

Drew M on February 2023

RN3 Corp.

3112 Prince Valiant Ln
5.00(
2
)
•Approved Pro

RN3 Corp.

3112 Prince Valiant Ln
5.00(
2
)
•Approved Pro
1 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Had a great experience with RN3 for a kitchen remodel. Their price was reasonable and beat several other companies by a good amount. Had new countertops and backsplash installed and new cabinet and drawer fronts with new hardware. They also replaced florescent box lighting with canned lighting. I was very happy with the outcome and the would use them again. "

Sam W on July 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Had a great experience with RN3 for a kitchen remodel. Their price was reasonable and beat several other companies by a good amount. Had new countertops and backsplash installed and new cabinet and drawer fronts with new hardware. They also replaced florescent box lighting with canned lighting. I was very happy with the outcome and the would use them again. "

Sam W on July 2025

Avatar for Joseph Paul Lutz

Joseph Paul Lutz

20222 Hayden Rd
5.00(
2
)
•Approved Pro

Joseph Paul Lutz

20222 Hayden Rd
5.00(
2
)
•Approved Pro
10 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 hired Joe Lutz Construction to build a new two car garage from plans provided by a local architect. The build site was a challenging sloped lot and Joe provided photos and customer contacts of similar jobs he had done, demonstrating his skill and competence which gave us confidence. Joe presented a contract that was clear and professional listing materials and methods of construction with a payment timeline related to the completion of various stages of the build. He handled all of the permit inspections and kept the project on track. The quality of the work was excellent, and Joe's communication skills kept us informed and updated on all aspects of the project. We are very satisfied with the work Joe and his team did and highly recommend him for your next construction project."

Kevin M on March 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.

"We hired Joe Lutz Construction to build a new two car garage from plans provided by a local architect. The build site was a challenging sloped lot and Joe provided photos and customer contacts of similar jobs he had done, demonstrating his skill and competence which gave us confidence. Joe presented a contract that was clear and professional listing materials and methods of construction with a payment timeline related to the completion of various stages of the build. He handled all of the permit inspections and kept the project on track. The quality of the work was excellent, and Joe's communication skills kept us informed and updated on all aspects of the project. We are very satisfied with the work Joe and his team did and highly recommend him for your next construction project."

Kevin M on March 2025

Avatar for Rodgers Construction

Rodgers Construction

19016 Birch St
5.00(
2
)
•Approved Pro

Rodgers Construction

19016 Birch St
5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 local quotes requested

Rodgers Construction 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.

"Mike is great at listening to his customer and meeting expectations. Heâ s very responsive and dependable."

Molly P on May 2023

Rodgers Construction 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.

"Mike is great at listening to his customer and meeting expectations. Heâ s very responsive and dependable."

Molly P on May 2023

Avatar for SAN & ZOE GENERAL CONTRACTOR INC

SAN & ZOE GENERAL CONTRACTOR INC

1317 PALMERA AVE
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

SAN & ZOE GENERAL CONTRACTOR INC

1317 PALMERA AVE
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
25 local quotes requested
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. 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 JP Winchell Construction, Inc.

JP Winchell Construction, Inc.

10 Softwind Drive
5.00(
4
)
•Approved Pro

JP Winchell Construction, Inc.

10 Softwind Drive
5.00(
4
)
•Approved Pro
Customers say: Quick response
14 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!

"It was a great experience. He kept us apprized of the issues throughout project. I would use him again. "

James B on September 2025

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!

"It was a great experience. He kept us apprized of the issues throughout project. I would use him again. "

James B on September 2025

Avatar for Rodgers Construction

Rodgers Construction

19016 Birch St
4.60(
5
)
•Approved Pro

Rodgers Construction

19016 Birch St
4.60(
5
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
128 local quotes requested

General contracting company specializing in bathrooms' and kitchen remodeling. Deck construction and repair, additions, New construction

"It went well, my old school bathroom was updated. I now have an awesome bathroom with a walk in shower, the tile work is gorgeous. I just love it! In my other bathroom the fixtures were changed and an extra door was replaced with a wall. I can’t even tell where the door was. Michael and his crew did an excellent job. I would definitely recommend if you care about quality."

CINDY G on April 2024

General contracting company specializing in bathrooms' and kitchen remodeling. Deck construction and repair, additions, New construction

"It went well, my old school bathroom was updated. I now have an awesome bathroom with a walk in shower, the tile work is gorgeous. I just love it! In my other bathroom the fixtures were changed and an extra door was replaced with a wall. I can’t even tell where the door was. Michael and his crew did an excellent job. I would definitely recommend if you care about quality."

CINDY G on April 2024

Avatar for GenJazz Building & Electrical Solutions

GenJazz Building & Electrical Solutions

1024 J Street
4.95(
93
)
•Approved Pro

GenJazz Building & Electrical Solutions

1024 J Street
4.95(
93
)
•Approved Pro
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
859 local quotes requested

At GenJazz, we pride ourselves on integrity, turning your dreams into reality. We specialize in designing and building exactly what you envision, with commitment to quality and excellence. Building Strong Foundations, Bright Connections!

"It went very smoothly. Fernando and Ray were quick, professional, courteous and genuinely friendly. They did a great job quickly and cleaned up after themselves. I would hire for other jobs in a heartbeat."

Jeff S on July 2025

At GenJazz, we pride ourselves on integrity, turning your dreams into reality. We specialize in designing and building exactly what you envision, with commitment to quality and excellence. Building Strong Foundations, Bright Connections!

"It went very smoothly. Fernando and Ray were quick, professional, courteous and genuinely friendly. They did a great job quickly and cleaned up after themselves. I would hire for other jobs in a heartbeat."

Jeff S on July 2025

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