Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Addition to existing structure builders in San Diego

SEAMLESS BUILDERS INC
9223 DALEHURST Rd
New on HomeAdvisorNew on Angi
Approved Pro
SEAMLESS BUILDERS INC
9223 DALEHURST Rd
New on AngiNew on HomeAdvisor
Approved Pro
2 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

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


Avatar for Sterling Design & Remodeling
Sterling Design & Remodeling
3577 Avocado Boulevard, Suite 309
New on HomeAdvisorNew on Angi
Approved Pro
Sterling Design & Remodeling
3577 Avocado Boulevard, Suite 309
New on AngiNew on HomeAdvisor
Approved Pro
35 years of experience
Warranties offered

Sterling Design and Remodeling does additions, upgrades and complete rebuilds of homes throughout the greater San Diego area. As your trusted partner from concept and design to final finish, Sterling maximizes the return on your investment while minimizing the disruption to your life. Sterling guarantees quality craftsmanship and engineering, professional end-to-end project management, as well as custom design to suit your preferred style, budget and goals. Highly customized service and outcomes to meet your needs Sterling?s founder, Ken Manchego,provides personalized oversight and attention to every Sterling project. He brings the benefit of more than 27 years of experience in design and remodeling along with an equally talented team of architects, engineers, and builders who collaborate seamlessly.

Sterling Design and Remodeling does additions, upgrades and complete rebuilds of homes throughout the greater San Diego area. As your trusted partner from concept and design to final finish, Sterling maximizes the return on your investment while minimizing the disruption to your life. Sterling guarantees quality craftsmanship and engineering, professional end-to-end project management, as well as custom design to suit your preferred style, budget and goals. Highly customized service and outcomes to meet your needs Sterling?s founder, Ken Manchego,provides personalized oversight and attention to every Sterling project. He brings the benefit of more than 27 years of experience in design and remodeling along with an equally talented team of architects, engineers, and builders who collaborate seamlessly.


Dryfix Services, Inc.
2252 Main St Unit 10
New on HomeAdvisorNew on Angi
Approved Pro
Dryfix Services, Inc.
2252 Main St Unit 10
New on AngiNew on HomeAdvisor
Approved Pro
13 years of experience
Free onsite estimate

We are 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."

We are 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."


Avatar for Stephanie's Construction Inc
Stephanie's Construction Inc
239 E Prospect St
4.80(
5
)
Approved Pro
Stephanie's Construction Inc
239 E Prospect St
4.80(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 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.

"null"

craig l on May 2020

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.

"null"

craig l on May 2020


PDC
1551 Calle De Andluca
5.00(
2
)
Approved Pro
PDC
1551 Calle De Andluca
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
36 years of experience

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at PDC, strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction.

"He did an excellent job."

Tye M on May 2021

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at PDC, strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction.

"He did an excellent job."

Tye M on May 2021


Pen & Mason Construction, Inc.
4025 NORDICA Ave
5.00(
3
)
Approved Pro
Pen & Mason Construction, Inc.
4025 NORDICA Ave
5.00(
3
)
Approved Pro
14 local quotes requested
3 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! Book with us online or feel free to give us a call today! Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Juan and his team were absolutely fantastic! From the start, he took the time to provide a thorough and honest estimate. He carefully inspected every part of the project to identify any issues before quoting—unlike other contractors I spoke with who were rushed, unprofessional, and gave me overpriced, unreasonable quotes without even taking a proper look. I was working with both a budget and a tight timeline, and Juan not only respected both—he finished the job three days early and delivered outstanding results! Juan is incredibly kind, respectful, dependable, and hardworking. He was transparent throughout the entire process, keeping me informed about his progress and any updates. I initially hired him for a bathroom remodel and a patio repair, but his work impressed me so much that I had him take care of several additional handyman tasks afterward. I’m truly impressed with the quality and care he puts into his work and will absolutely be hiring him again for future home projects. "

Marie M on May 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! Book with us online or feel free to give us a call today! Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Juan and his team were absolutely fantastic! From the start, he took the time to provide a thorough and honest estimate. He carefully inspected every part of the project to identify any issues before quoting—unlike other contractors I spoke with who were rushed, unprofessional, and gave me overpriced, unreasonable quotes without even taking a proper look. I was working with both a budget and a tight timeline, and Juan not only respected both—he finished the job three days early and delivered outstanding results! Juan is incredibly kind, respectful, dependable, and hardworking. He was transparent throughout the entire process, keeping me informed about his progress and any updates. I initially hired him for a bathroom remodel and a patio repair, but his work impressed me so much that I had him take care of several additional handyman tasks afterward. I’m truly impressed with the quality and care he puts into his work and will absolutely be hiring him again for future home projects. "

Marie M on May 2025


Avatar for EG Construction and Restoration
EG Construction and Restoration
8146 Miramar Road
4.95(
11
)
Approved Pro
EG Construction and Restoration
8146 Miramar Road
4.95(
11
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
20 years of experience

We offer a full range of residential construction services. We specialize in home remodels, office remodels, bathroom remodels, kitchen remodels, room additions, tile/ flooring installation, plumbing services, electrical wiring, interior and exterior paint, drywall installation, cabinetry, concrete and masonry, as well as ADU construction. We strive to make our customers homes or offices better and improve their lifestyles through our expertise in construction and design.

"Review time! Are you sure you want me to review EG Construction? The answer is, of course! Time has passed a bit since Elias and crew completed the project for our home here in San Diego. I just did not have the time to sit down and focus on a review for this company, but I do have time now. The guys who showed up to do the work were great. Communications from the group was excellent, no issues at all while we worked from home. The engineered wood flooring looks amazing and I really appreciate the care they took to provide a high-quality job while completing it within our agreed time schedule. Elias had no issue working this project through the holidays (it was almost Christmas), but good thing it was completed prior to that! Kudos to the crew for working so diligently and at the same time keeping the level of quality in check. No one is perfect, could there be something that they could do to improve? Sure, letâ s just say we were glad that we were not in a rush to get this project done. E.G. Construction was a bit slow to get back with estimates and follow ups on material prices. Talk about the price, their estimates were in line with other bids we received. Yes, we did shop around and almost went to another contractor, however, my wife leaned towards giving E.G. Construction an opportunity. In any case, the job was done right and thatâ s the most important thing that mattered. This is a family company, so I understand not all process is perfect so I did not mind for some of the communication delays. Paola was straightforward and easy to work with when we got in touch, she also was able to get me an answer when I asked. Also, maybe our home project is really small compared to what they are usually chasing after. Elias seemed to always act responsible and I love his stylish fashion outfit (I like his fashionable glasses the day he showed up for a final follow up with me). Not only do I recommend E.G. Construction, but we do not believe we are done with their services. Labor in general is not cheap, but quality service is not an option and I believe E.G. Construction provides excellent quality. Since we have enough left-over material to replace other carpet areas, we hope E.G. Construction will be our partner in that future project."

Allen W on February 2024

We offer a full range of residential construction services. We specialize in home remodels, office remodels, bathroom remodels, kitchen remodels, room additions, tile/ flooring installation, plumbing services, electrical wiring, interior and exterior paint, drywall installation, cabinetry, concrete and masonry, as well as ADU construction. We strive to make our customers homes or offices better and improve their lifestyles through our expertise in construction and design.

"Review time! Are you sure you want me to review EG Construction? The answer is, of course! Time has passed a bit since Elias and crew completed the project for our home here in San Diego. I just did not have the time to sit down and focus on a review for this company, but I do have time now. The guys who showed up to do the work were great. Communications from the group was excellent, no issues at all while we worked from home. The engineered wood flooring looks amazing and I really appreciate the care they took to provide a high-quality job while completing it within our agreed time schedule. Elias had no issue working this project through the holidays (it was almost Christmas), but good thing it was completed prior to that! Kudos to the crew for working so diligently and at the same time keeping the level of quality in check. No one is perfect, could there be something that they could do to improve? Sure, letâ s just say we were glad that we were not in a rush to get this project done. E.G. Construction was a bit slow to get back with estimates and follow ups on material prices. Talk about the price, their estimates were in line with other bids we received. Yes, we did shop around and almost went to another contractor, however, my wife leaned towards giving E.G. Construction an opportunity. In any case, the job was done right and thatâ s the most important thing that mattered. This is a family company, so I understand not all process is perfect so I did not mind for some of the communication delays. Paola was straightforward and easy to work with when we got in touch, she also was able to get me an answer when I asked. Also, maybe our home project is really small compared to what they are usually chasing after. Elias seemed to always act responsible and I love his stylish fashion outfit (I like his fashionable glasses the day he showed up for a final follow up with me). Not only do I recommend E.G. Construction, but we do not believe we are done with their services. Labor in general is not cheap, but quality service is not an option and I believe E.G. Construction provides excellent quality. Since we have enough left-over material to replace other carpet areas, we hope E.G. Construction will be our partner in that future project."

Allen W on February 2024


Avatar for CTN CONSTRUCTION
CTN CONSTRUCTION
1945 OLIVER AVE
5.00(
4
)
Approved Pro
CTN CONSTRUCTION
1945 OLIVER AVE
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

CTN CONSTRUCTION is your one stop shop for all of your remodeling needs! 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. Give us a call today!

"Excellent contractor, very professional, he was on time and did an amazing job, I highly recommend Chris Nikolsky !!"

Sarita A on June 2023

CTN CONSTRUCTION is your one stop shop for all of your remodeling needs! 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. Give us a call today!

"Excellent contractor, very professional, he was on time and did an amazing job, I highly recommend Chris Nikolsky !!"

Sarita A on June 2023


Avatar for Remcon Design Build
Remcon Design Build
7154 Convoy Ct
5.00(
1
)
Approved Pro
Remcon Design Build
7154 Convoy Ct
5.00(
1
)
Approved Pro
19 years of experience
Free onsite estimate

Remcon Design Build 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.

Remcon Design Build 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.


Avatar for Coastal Contracting, Inc.
Coastal Contracting, Inc.
5476 Moonlight Lane
4.50(
8
)
Approved Pro
Coastal Contracting, Inc.
5476 Moonlight Lane
4.50(
8
)
Approved Pro
Customers say: Quick response
27 years of experience
Free onsite estimate

Coastal Contracting Inc. offers honest, reliable and professional craftsmanship. We specialize in the design and remodel of kitchens and bathrooms. We promise you won't be disappointed with our work. Behind that promise, we want you to know that we back our work with satisfaction guarantee. We won't stop working until you like what we have done.

"Very Professional. Always on time. Cleaned up everyday. Work was of the highest quality. Always polite. Work was done during the Corona Pandemic (after the state allowed this type of work) and workers always wore face masks and socially distanced. Would definitely use Coastal Contracting and Brennon again."

Eugene H on September 2020

Coastal Contracting Inc. offers honest, reliable and professional craftsmanship. We specialize in the design and remodel of kitchens and bathrooms. We promise you won't be disappointed with our work. Behind that promise, we want you to know that we back our work with satisfaction guarantee. We won't stop working until you like what we have done.

"Very Professional. Always on time. Cleaned up everyday. Work was of the highest quality. Always polite. Work was done during the Corona Pandemic (after the state allowed this type of work) and workers always wore face masks and socially distanced. Would definitely use Coastal Contracting and Brennon again."

Eugene H on September 2020

...
Showing 1-10 of 999

Addition to existing structure building services FAQs

How far you can push a room depends on the structure you choose. A cantilevered bump-out can extend 24 inches before building codes require its own footing or foundation. Anything longer needs engineered support and a permit. Check local codes or consult with a structural professional before finalizing plans to ensure your design remains safe and compliant.

Most bump-outs are completed within one to four weeks, even with minimal electrical, plumbing, or HVAC work. Their compact size means less demolition, simpler inspections, and fewer weather-related delays compared to a full-scale addition. Your contractor can provide a more precise timeline once they have determined the scope, materials, and permit schedule, but plan on having the extra square footage ready in approximately a month.

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.
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.
BLUE TWO STORY HOME
Apr 30, 2025
Apr 30, 2025
Budget for the cost to add a second story based on factors such as size, foundation work, materials, labor, permits, post-construction cleaning, and more.
small bathroom that has been updated in a remodel
Apr 29, 2025
Apr 29, 2025
Budget for the cost to remodel a small bathroom based on factors such as required fixtures, bathroom size, labor, remodel type, site prep, and more.
guest house in the backyard
Apr 27, 2025
Apr 27, 2025
Need to build a guest house? Here’s how much it costs, what factors affect cost, and what to expect.
Kitchen view leading into dining area
Apr 28, 2025
Apr 28, 2025
Use this guide to budget for bump-out addition costs based on factors such as room size, room type, labor, finishes, permits, and more.
House roof with nice window
Apr 28, 2025
Apr 28, 2025
Budget for dormer addition costs based on factors such as roof type, framing, customizations, reinforcement, cladding, labor, and more.
Share project details to get started.