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 Vista

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.


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


lic since 92 30 years of experience

"Tuan is very honest, great communicator, reasonable price and great quality."

Phil R on June 2020


Avatar for Preferred Remodelers
Preferred Remodelers
1145-C Industrial Avenue
5.00(
8
)
Approved Pro
Preferred Remodelers
1145-C Industrial Avenue
5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
39 years of experience

It is my mission to provide excellence to all our projects and exceed our clients’ expectations of the value they will receive by providing professionalism of management, as well as high quality craftsmanship. Trust and honesty are to be the foundation for all our client and business relationships. It is my goal to develop and nurture relationships with our clients and business associates by maintaining a team atmosphere with a common goal.

"Jim is a great guy to work with!!! He was very understanding and responsive to all my questions and concerns. He oversaw the entire operation of removing a wall to open up the living area. This encompassed general demo and construction, electrical, resurfacing, matching texture and repainting. Followed by some special hardwood floor detail work. His team of workers are always excellent and considerate of us and our home. You will not be disappointed! It is very difficult to try and choose a contractor and I feel lucky to have found him!!"

Melody M on November 2021

It is my mission to provide excellence to all our projects and exceed our clients’ expectations of the value they will receive by providing professionalism of management, as well as high quality craftsmanship. Trust and honesty are to be the foundation for all our client and business relationships. It is my goal to develop and nurture relationships with our clients and business associates by maintaining a team atmosphere with a common goal.

"Jim is a great guy to work with!!! He was very understanding and responsive to all my questions and concerns. He oversaw the entire operation of removing a wall to open up the living area. This encompassed general demo and construction, electrical, resurfacing, matching texture and repainting. Followed by some special hardwood floor detail work. His team of workers are always excellent and considerate of us and our home. You will not be disappointed! It is very difficult to try and choose a contractor and I feel lucky to have found him!!"

Melody M on November 2021


Avatar for Olalde Group, Inc.
Olalde Group, Inc.
741 East Adams Park Drive
5.00(
1
)
Approved Pro
Olalde Group, Inc.
741 East Adams Park Drive
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

Olalde Group, 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 makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Please give us a call today!

"Efrain and David are fantastic! When our contractor was suddenly unable to continue with the job, David took over with a great positive attitude. He persistently worked with the city to get the building permit, finally ending a tedious 10 month process. Crews were here working every day. Each one of them was considerate, conscientious, and demonstrated a strong work ethic. Efrain and David communicated with us most days and were always accessible to us. My ADU is adorable and just what we wanted and I am sure that many contractors could have pulled it off. The important thing about Olalde is that they truly care and honestly want us to be happy."

Judy M on October 2023

Olalde Group, 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 makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Please give us a call today!

"Efrain and David are fantastic! When our contractor was suddenly unable to continue with the job, David took over with a great positive attitude. He persistently worked with the city to get the building permit, finally ending a tedious 10 month process. Crews were here working every day. Each one of them was considerate, conscientious, and demonstrated a strong work ethic. Efrain and David communicated with us most days and were always accessible to us. My ADU is adorable and just what we wanted and I am sure that many contractors could have pulled it off. The important thing about Olalde is that they truly care and honestly want us to be happy."

Judy M on October 2023


Avatar for Socal Express Restoration and Construction Inc.
Socal Express Restoration and Construction Inc.
6860 Canby Avenue, Suite 114
New on HomeAdvisorNew on Angi
Approved Pro
Socal Express Restoration and Construction Inc.
6860 Canby Avenue, Suite 114
New on AngiNew 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


Buckley Builders, Inc.
PO Box 70194
New on HomeAdvisorNew on Angi
Approved Pro
Buckley Builders, Inc.
PO Box 70194
New on AngiNew on HomeAdvisor
Approved Pro
25 years of experience
Free onsite estimate

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 Remodels, but also offer a wide range of expertise for a variety of other projects. New construction is our expertise as well. 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’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 Remodels, but also offer a wide range of expertise for a variety of other projects. New construction is our expertise as well. 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!


ECS Construction, Inc.
1185 Park Center Drive, Suite T
4.88(
32
)
Approved Pro
ECS Construction, Inc.
1185 Park Center Drive, Suite T
4.88(
32
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
36 years of experience

ECS Construction has been serving San Diego's North County since 1989. We specialize in all areas of residential construction including custom homes, room additions, remodels, kitchens and baths.

"Eric and his team were professional and communicative throughout. He helped us repair an external leak of unknown origin and was able to provide reasonable estimates for repairs even before exact details of the issue were known. Would highly recommend."

Denis G on January 2024

ECS Construction has been serving San Diego's North County since 1989. We specialize in all areas of residential construction including custom homes, room additions, remodels, kitchens and baths.

"Eric and his team were professional and communicative throughout. He helped us repair an external leak of unknown origin and was able to provide reasonable estimates for repairs even before exact details of the issue were known. Would highly recommend."

Denis G on January 2024


Avatar for Pinnacle Development & Renovation, Corp.
Pinnacle Development & Renovation, Corp.
1259 Linda Vista Drive
5.00(
1
)
Approved Pro
Pinnacle Development & Renovation, Corp.
1259 Linda Vista Drive
5.00(
1
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

Pinnacle Remodeling Corp. 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.

"Good customer service, friendly staff, responsive to questions and the time frame of work was reasonable."

Homeowner on October 2022

Pinnacle Remodeling Corp. 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.

"Good customer service, friendly staff, responsive to questions and the time frame of work was reasonable."

Homeowner on October 2022


Avatar for Ritz Design Build, a Division of Budge-It Home Remodeling, Inc.
Ritz Design Build, a Division of Budge-It Home Remodeling, Inc.
7878 Clairemont Mesa Blvd, Suite K
4.94(
15
)
Approved Pro
Ritz Design Build, a Division of Budge-It Home Remodeling, Inc.
7878 Clairemont Mesa Blvd, Suite K
4.94(
15
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
17 local quotes requested

Ritz Design Build, has served all of San Diego County as a design-build contractor since 1965.Their specialty is designing and building Accessory Dwelling Units, ADU's, and custom home additions, such as Master Suites, Family Rooms, Granny Flats (ADU's) Kitchen Extensions, and Second Stories. They also offer a 3D design service on all qualifying projects. This service allows homeowners to visualize their completed projects during the initial design stage. The service includes both interior and exterior 3D renderings and floor plan options. Put their 55 years of tried & true experience to work for you and see why so many of your neighbors have already chosen Ritz Design Build to design and build their home addition.

"From the first meeting with Ed and Claudia, my family knew we were in great hands. They listened to our needs and wants and offered advice to help us make the best decisions for our family. During the design process, all the details we reviewed and the team listened. The final design was exactly what I wanted. Once Ritz began the remodel, I was kept in the loop from permits, inspections, timelines, and everything else. I was never guessing. The project manger, Aiden, listened to all my questions and made sure I understood each decision made. When it came to the details, Aiden was always a phone call away. He spent hours working to make sure everything was perfect and that I was happy with the end results. Ritz was professional and timely and even completed the project within in the timeframe (over a month earlier than projected). During demolition, the crew worked to overcome any challenges that came their way. The construction process moved quickly and each team was professional. All subcontractors were part of the team ( plumbing, flooring, painting, etc.) they always were professional and answered any questions I had. Even during a pandemic, Ritz was able to design and build my dream home. I appreciate all their hard work and dedication to the remodel. Aiden is knowledgeable with his skills and handy work and led the team with excellence. Eddie designed a home that met all my family needs. The crews were top notch and the best of the best. And Ed and Claudia always treated us like family when we met. If you need your home remodeled, Ritz is the company for you."

Christinia E on February 2022

Ritz Design Build, has served all of San Diego County as a design-build contractor since 1965.Their specialty is designing and building Accessory Dwelling Units, ADU's, and custom home additions, such as Master Suites, Family Rooms, Granny Flats (ADU's) Kitchen Extensions, and Second Stories. They also offer a 3D design service on all qualifying projects. This service allows homeowners to visualize their completed projects during the initial design stage. The service includes both interior and exterior 3D renderings and floor plan options. Put their 55 years of tried & true experience to work for you and see why so many of your neighbors have already chosen Ritz Design Build to design and build their home addition.

"From the first meeting with Ed and Claudia, my family knew we were in great hands. They listened to our needs and wants and offered advice to help us make the best decisions for our family. During the design process, all the details we reviewed and the team listened. The final design was exactly what I wanted. Once Ritz began the remodel, I was kept in the loop from permits, inspections, timelines, and everything else. I was never guessing. The project manger, Aiden, listened to all my questions and made sure I understood each decision made. When it came to the details, Aiden was always a phone call away. He spent hours working to make sure everything was perfect and that I was happy with the end results. Ritz was professional and timely and even completed the project within in the timeframe (over a month earlier than projected). During demolition, the crew worked to overcome any challenges that came their way. The construction process moved quickly and each team was professional. All subcontractors were part of the team ( plumbing, flooring, painting, etc.) they always were professional and answered any questions I had. Even during a pandemic, Ritz was able to design and build my dream home. I appreciate all their hard work and dedication to the remodel. Aiden is knowledgeable with his skills and handy work and led the team with excellence. Eddie designed a home that met all my family needs. The crews were top notch and the best of the best. And Ed and Claudia always treated us like family when we met. If you need your home remodeled, Ritz is the company for you."

Christinia E on February 2022

...
Showing 1-10 of 979

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.