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Addition to existing structure builders in Modesto

Dynamic Building and Restoration
2229 Edgebrook Dr
5.00(
1
)
Approved Pro
Dynamic Building and Restoration
2229 Edgebrook Dr
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. 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!

"A hard worker man who tries to do the best he can, a great job."

Bob B on August 2020

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. 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!

"A hard worker man who tries to do the best he can, a great job."

Bob B on August 2020


RN3 Corp.
3112 Prince Valiant Ln
5.00(
1
)
Approved Pro
RN3 Corp.
3112 Prince Valiant Ln
5.00(
1
)
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.

"We hired RN3 to build a room in our garage and then add drywall (finish) the rest of our garage. Chris (owner) was very communicative and worked within our budget! Him and his crew (John, Joe and Bob) were polite, and did an AMAZING job! RN3 is now my go-to for any future projects. I'm very happy with the work they did."

CANDICE L on June 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.

"We hired RN3 to build a room in our garage and then add drywall (finish) the rest of our garage. Chris (owner) was very communicative and worked within our budget! Him and his crew (John, Joe and Bob) were polite, and did an AMAZING job! RN3 is now my go-to for any future projects. I'm very happy with the work they did."

CANDICE L on June 2025


Avatar for JP Winchell Construction, Inc.
JP Winchell Construction, Inc.
10 Softwind Drive
5.00(
2
)
Approved Pro
JP Winchell Construction, Inc.
10 Softwind Drive
5.00(
2
)
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!

"JP Winchell Construction has done an amazing job with my bathroom remodel. They were very attentive to my needs, and worked with me on design choices every step of the way. If you want your project done right the first time, I would choose this company over others I have used in the past. Thank you for all your hard work and dedication to detail!"

Elaine _ 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!

"JP Winchell Construction has done an amazing job with my bathroom remodel. They were very attentive to my needs, and worked with me on design choices every step of the way. If you want your project done right the first time, I would choose this company over others I have used in the past. Thank you for all your hard work and dedication to detail!"

Elaine _ on December 2024


Jack R Wilson Jr
PO BOX 1337
New on HomeAdvisorNew on Angi
Approved Pro
Jack R Wilson Jr
PO BOX 1337
New on AngiNew on HomeAdvisor
Approved Pro
47 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.

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.


Avatar for SAN & ZOE GENERAL CONTRACTOR INC
SAN & ZOE GENERAL CONTRACTOR INC
1317 PALMERA AVE
New on HomeAdvisorNew on Angi
Approved Pro
SAN & ZOE GENERAL CONTRACTOR INC
1317 PALMERA AVE
New on AngiNew on HomeAdvisor
Approved Pro
10 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 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 Edwards Construction, Inc.
Edwards Construction, Inc.
3045 Del Rio Dr
4.68(
38
)
Approved Pro
Edwards Construction, Inc.
3045 Del Rio Dr
4.68(
38
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
40 local quotes requested

We are a family owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer all remodeling services without subcontracting to others. Completing projects in a timely manner is critical to our success and we pride ourselves in having skilled workers of all trades on staff.. We specialize in kitchens and baths, but capable of a variety of 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!

"We hired to Gary Edwards (Edwards Construction) to add a room in our house in Manteca, CA First day, Gary Edwards (November 1, 2024), demanded an upfront payment of approximately $24,000 that we have to pay, approx. 65% of the project cost. It became clear later that he systematically deceived us at the most vulnerable times. They created extensive delays, added costs after work started and intentionally delayed work. Gary?s was blatantly disrespectful towards us in his tone and demeanor, ridiculing us at times. He came to our house multiple times along with Alisa, his daughter. We told him we discussed making the first 65% ($24000) payment and the rest after the project is complete. They blackmailed us they would not continue unless they get more money. So, we had to make another $10000 (total more than 90%) payment. They then disappeared without completing the work. We recommend completely refrain from Gary Edwards and the company as you will get hurt and defrauded by them."

Manish B on January 2025

We are a family owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer all remodeling services without subcontracting to others. Completing projects in a timely manner is critical to our success and we pride ourselves in having skilled workers of all trades on staff.. We specialize in kitchens and baths, but capable of a variety of 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!

"We hired to Gary Edwards (Edwards Construction) to add a room in our house in Manteca, CA First day, Gary Edwards (November 1, 2024), demanded an upfront payment of approximately $24,000 that we have to pay, approx. 65% of the project cost. It became clear later that he systematically deceived us at the most vulnerable times. They created extensive delays, added costs after work started and intentionally delayed work. Gary?s was blatantly disrespectful towards us in his tone and demeanor, ridiculing us at times. He came to our house multiple times along with Alisa, his daughter. We told him we discussed making the first 65% ($24000) payment and the rest after the project is complete. They blackmailed us they would not continue unless they get more money. So, we had to make another $10000 (total more than 90%) payment. They then disappeared without completing the work. We recommend completely refrain from Gary Edwards and the company as you will get hurt and defrauded by them."

Manish B on January 2025


RSF Construction Inc.
6910 Monte Verde Drive
New on HomeAdvisorNew on Angi
Approved Pro
RSF Construction Inc.
6910 Monte Verde Drive
New on AngiNew on HomeAdvisor
Approved Pro
218 local quotes requested
6 years of experience

RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!


Avatar for Prosper Construction Development, Inc.
Prosper Construction Development, Inc.
180 Steuart St., Box 194631
4.88(
38
)
Approved Pro
Prosper Construction Development, Inc.
180 Steuart St., Box 194631
4.88(
38
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
230 local quotes requested

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"Fast response and clear communication throughout the process."

Marco T on April 2025

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"Fast response and clear communication throughout the process."

Marco T on April 2025


Avatar for E. Arias & Company
E. Arias & Company
5195 Ramsdell Court
5.00(
5
)
Approved Pro
E. Arias & Company
5195 Ramsdell Court
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2052 local quotes requested

HI!, my name is Irving Rodriguez, and I’m a licensed contractor with over 40 years of experience. I specialize in high-quality remodeling and property services designed to enhance the beauty, functionality, and value of your home. Tailored to your vision and needs. Trust and Reliability: Decades of experience with satisfied homeowners. Quality Workmanship: We deliver durable and aesthetically pleasing results. --- Next Steps If you have a project in mind or want to explore ideas to improve your home, I’d love to discuss it with you. We can schedule a consultation to review your goals and provide a detailed estimate. Thank you for your time, and I look forward to helping you make your home even better!

"So they’ve constructed many different things in my mother’s home now. From bathrooms to and a series of home improvement projects—most notably a complete bathroom remodel, as well as various upgrades and repairs throughout the house—and the experience exceeded all expectations. From the very beginning, the professionalism and attention to detail stood out. They treated our home as if it were theirs, ensuring that every fixture, tile, and finish was executed with precision and care. The bathroom transformation was truly stunning—sleek, modern, and remarkably functional. What impressed me most was the seamless coordination of multiple trades, and how effortlessly he managed the timeline while maintaining an exceptional standard of quality. Not to mention the very affordable pricing! Beyond the bathroom, he tackled several other improvements—drywall repair, custom carpentry, tiling, and fixture installations—all done flawlessly. He brought creative solutions to the table, respected our vision, and always kept us informed throughout the process. Cleanliness, punctuality, and craftsmanship were consistently top-notch. If you’re looking for a contractor who combines integrity, skill, and artistry, look no further. I wouldn’t trust anyone else with my home. This is a rare find in today’s market, and I can’t recommend them highly enough."

brandon p on April 2025

HI!, my name is Irving Rodriguez, and I’m a licensed contractor with over 40 years of experience. I specialize in high-quality remodeling and property services designed to enhance the beauty, functionality, and value of your home. Tailored to your vision and needs. Trust and Reliability: Decades of experience with satisfied homeowners. Quality Workmanship: We deliver durable and aesthetically pleasing results. --- Next Steps If you have a project in mind or want to explore ideas to improve your home, I’d love to discuss it with you. We can schedule a consultation to review your goals and provide a detailed estimate. Thank you for your time, and I look forward to helping you make your home even better!

"So they’ve constructed many different things in my mother’s home now. From bathrooms to and a series of home improvement projects—most notably a complete bathroom remodel, as well as various upgrades and repairs throughout the house—and the experience exceeded all expectations. From the very beginning, the professionalism and attention to detail stood out. They treated our home as if it were theirs, ensuring that every fixture, tile, and finish was executed with precision and care. The bathroom transformation was truly stunning—sleek, modern, and remarkably functional. What impressed me most was the seamless coordination of multiple trades, and how effortlessly he managed the timeline while maintaining an exceptional standard of quality. Not to mention the very affordable pricing! Beyond the bathroom, he tackled several other improvements—drywall repair, custom carpentry, tiling, and fixture installations—all done flawlessly. He brought creative solutions to the table, respected our vision, and always kept us informed throughout the process. Cleanliness, punctuality, and craftsmanship were consistently top-notch. If you’re looking for a contractor who combines integrity, skill, and artistry, look no further. I wouldn’t trust anyone else with my home. This is a rare find in today’s market, and I can’t recommend them highly enough."

brandon p on April 2025


Trew Construction
New on HomeAdvisorNew on Angi
Approved Pro
Trew Construction
New on AngiNew on HomeAdvisor
Approved Pro
632 local quotes requested
5 years of experience

A top notch Construction service is one phone call away. Reach Trew Construction and we will exceed your expectations. Major Remodels, Commercial Jobs, Room Additions, Kitchen Remodel, Addition Builder Squabbletown CA; Shaws Flat CA; Springfield CA; Columbia CA; Quail Hollow CA; New Home Builders, Commercial Construction Companies, Custom Home Builders, Home Additions, House Additions Ask us about our Senior and Veteran discounts. https://ronjohnsonconstructionca.com/

A top notch Construction service is one phone call away. Reach Trew Construction and we will exceed your expectations. Major Remodels, Commercial Jobs, Room Additions, Kitchen Remodel, Addition Builder Squabbletown CA; Shaws Flat CA; Springfield CA; Columbia CA; Quail Hollow CA; New Home Builders, Commercial Construction Companies, Custom Home Builders, Home Additions, House Additions Ask us about our Senior and Veteran discounts. https://ronjohnsonconstructionca.com/

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FAQs for addition to existing structure building service projects in Modesto, CA

Yes, you can add a bathroom on a concrete slab, but the crew will need to saw-cut the slab, trench in new supply and drain lines, and then patch the concrete without weakening the foundation. Working with an experienced plumber and concrete pro keeps the structure intact and helps the new bathroom pass inspections.

schedule covers planning, permits, framing, rough-ins, finishes, and punch-list items. 

Larger spaces or extensive plumbing and electrical upgrades can stretch the timeline, while a simple powder-room conversion may wrap up faster. Hiring licensed pros helps keep the schedule on track and the work up to code.

The best location depends on how your family uses the space. An upstairs bath keeps nighttime trips close to the bedrooms, while a first-floor powder room is handy for guests and everyday traffic. 

Think about where plumbing lines already run, how much square footage you can spare, and what layout changes fit your budget. A pro can map out the smartest spot and handle any code hurdles.

With the right planning, you can carve out a bathroom in almost any part of the house. A successful addition requires sufficient space, proper ventilation, and access to plumbing and electrical systems. Structural modifications and adherence to building codes are essential. 

This process demands careful planning and the coordination of specialized professionals who ensure that the new space meets all code requirements and functional needs.

Under specific conditions, adding an extra bedroom can boost home value more than adding a bathroom. Home value is driven by overall configuration, market demand, and functional balance. A new bedroom influences the property’s appeal in different ways, while an additional bathroom enhances living convenience. Evaluating the current layout and market trends determines the optimal choice for maximum value.

The Modesto, 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.
master bedroom with fireplace
Jun 26, 2025
Jun 26, 2025
Budget for bedroom remodel costs based on factors such as bedroom size, remodel type, features, materials, labor, and more.
CONTRACTOR LOOKING OVER HOME DEVELOPMENT
Apr 19, 2025
Apr 19, 2025
Budget for your general contractor’s hourly rate by considering factors such as project scope, fee structure, pricing model, and more.
Outdoor view of the modern house
Jun 16, 2025
Jun 16, 2025
Explore how square footage, room type, home additions, and other common factors affect house renovation costs with our detailed cost guide.
BRIGHT OPEN ATTIC SPACE
Jun 10, 2025
Jun 10, 2025
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.
white and gray kitchen with butchers block countertop
Apr 8, 2025
Apr 8, 2025
Looking to enhance the warmth and utility of your kitchen? Explore how much a butcher block countertop costs and start your budget here.
built-in outdoor kitchen with grill and sink
Apr 30, 2025
Apr 30, 2025
Budget for outdoor kitchen costs based on factors such as appliances, materials, permits, labor, amenities, kitchen size, customizations, and more.
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