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Find Addition to existing structure builders in Ontario

Avatar for VLP Design Build Inc

VLP Design Build Inc

5.00(
4
)
Approved Pro

VLP Design Build Inc

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
24 years of experience

Here at VLP Design Build, Quality is our Goal! We're a locally family owned and operated company that values honesty and integrity, and stands behind our work. Our services are customized to the individual project, paying close attention to the details of each project and keeping communication through each stage of the job. We look forward to building long-term relationships with our clients!

"The cabinets turned out exactly as we wanted and Victor was very communicative throughout the entire process. Everything was laid out very clearly upfront so there were no surprise costs."

Laura M on November 2023

Here at VLP Design Build, Quality is our Goal! We're a locally family owned and operated company that values honesty and integrity, and stands behind our work. Our services are customized to the individual project, paying close attention to the details of each project and keeping communication through each stage of the job. We look forward to building long-term relationships with our clients!

"The cabinets turned out exactly as we wanted and Victor was very communicative throughout the entire process. Everything was laid out very clearly upfront so there were no surprise costs."

Laura M on November 2023


Avatar for Socal Express Restoration and Construction Inc.

Socal Express Restoration and Construction Inc.

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Socal Express Restoration and Construction Inc.

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
6 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 La Cima Construction Inc

La Cima Construction Inc

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

La Cima Construction Inc

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
3 years of experience
Free onsite estimate

We take great pride in our over 30 years 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 the start to the 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 take great pride in our over 30 years 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 the start to the 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.


Skyline Konstruction & Home Improvement, Inc.

5.00(
15
)
Approved Pro

Skyline Konstruction & Home Improvement, Inc.

5.00(
15
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
10 years of experience

At Skyline Konstruction & Home Improvement, Inc. We have taken "CON" out of construction! 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 is.

"Skykine Konstruction really does “take the con out of construction”! They provide transparent estimates, and their team of pros for every trade is well versed with building codes, to do the job right the first time with zero issues during inspection. Juan and his team converted our attached 484 square foot garage into a beautiful, energy efficient ADU that “looks like it was always there”! Juan corrected mistakes made by the architect and added upgrades to our foundation required by the county, all with sensible solutions at minimal cost. Juan has attention to detail that will catch small things the average person, including the homeowner, will overlook. He is never satisfied with “just ok”….he aims for and achieves perfection! We actually missed him and his entire crew when the job was finished! They were all very friendly, yet professional in every respect. Don’t trust just anyone with your hard earned money and family home. You NEED a trustworthy leader like Juan, who will give you a fair price for exceptional work. Don’t trust a company that sends a representative that is only good for pricing at the high end to collect a commission! Cut out the middleman and go direct with Juan. He has my number and knows he can always ask someone to call me for a real life and honest assessment of him, his work and company. A home is never done, and we’re glad to have Juan as “a friend we can trust”, for all future projects. And for the record we did not know him until we awarded our project to Skykine, so that says a lot!!!"

Paul A on July 2021

At Skyline Konstruction & Home Improvement, Inc. We have taken "CON" out of construction! 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 is.

"Skykine Konstruction really does “take the con out of construction”! They provide transparent estimates, and their team of pros for every trade is well versed with building codes, to do the job right the first time with zero issues during inspection. Juan and his team converted our attached 484 square foot garage into a beautiful, energy efficient ADU that “looks like it was always there”! Juan corrected mistakes made by the architect and added upgrades to our foundation required by the county, all with sensible solutions at minimal cost. Juan has attention to detail that will catch small things the average person, including the homeowner, will overlook. He is never satisfied with “just ok”….he aims for and achieves perfection! We actually missed him and his entire crew when the job was finished! They were all very friendly, yet professional in every respect. Don’t trust just anyone with your hard earned money and family home. You NEED a trustworthy leader like Juan, who will give you a fair price for exceptional work. Don’t trust a company that sends a representative that is only good for pricing at the high end to collect a commission! Cut out the middleman and go direct with Juan. He has my number and knows he can always ask someone to call me for a real life and honest assessment of him, his work and company. A home is never done, and we’re glad to have Juan as “a friend we can trust”, for all future projects. And for the record we did not know him until we awarded our project to Skykine, so that says a lot!!!"

Paul A on July 2021


"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


Avatar for ABL Contracting, Inc.

ABL Contracting, Inc.

5.00(
1
)
Approved Pro

ABL Contracting, Inc.

5.00(
1
)
Approved Pro
2 years of experience
Free onsite estimate

ABL Contracting, Inc. is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

ABL Contracting, Inc. is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!


Avatar for Laguna Bay Developing

Laguna Bay Developing

4.64(
11
)
Approved Pro

Laguna Bay Developing

4.64(
11
)
Approved Pro
Customers say: Quick response
66 local quotes requested
Emergency services offered

We are a building, architectural design company that strongly believes in adding value with quality remodeling and affordable pricing. We specialize in crafting your dreams. Our owner, David Fidman, has experience since the 1990's in new construction and remodeling of homes. Our enthusiastic and fully licensed and bonded team can exceed your hopes for any project with our personalized service, whether it is constructing your dream home, renovating and upgrading your curb appeal, or remodeling your existing floor plan. As a boutique firm, we optimize personalization by getting to know our customers needs and wants through an attentive project management style. At Laguna Bay Developing, we want this experience to be as an exciting experience as it is rewarding, from the design plans and material selections to the permit approval and construction process, we will be there for every step, we love to see our clients dreams realized!

"Laguna Bay Developing Company recently demolished my old balcony and installed a brand-new one that looks absolutely fantastic. From start to finish, the team was friendly, professional, and respectful. They stuck to the agreed budget without adding costs through scope creep, which gave me great peace of mind. I was especially impressed with how courteous they were to our neighbors and how well they kept to their schedule. The entire process was smooth, and the results exceeded my expectations. I wholeheartedly recommend Laguna Bay Developing Company to anyone looking for quality workmanship and reliable service."

Robert R on December 2025

We are a building, architectural design company that strongly believes in adding value with quality remodeling and affordable pricing. We specialize in crafting your dreams. Our owner, David Fidman, has experience since the 1990's in new construction and remodeling of homes. Our enthusiastic and fully licensed and bonded team can exceed your hopes for any project with our personalized service, whether it is constructing your dream home, renovating and upgrading your curb appeal, or remodeling your existing floor plan. As a boutique firm, we optimize personalization by getting to know our customers needs and wants through an attentive project management style. At Laguna Bay Developing, we want this experience to be as an exciting experience as it is rewarding, from the design plans and material selections to the permit approval and construction process, we will be there for every step, we love to see our clients dreams realized!

"Laguna Bay Developing Company recently demolished my old balcony and installed a brand-new one that looks absolutely fantastic. From start to finish, the team was friendly, professional, and respectful. They stuck to the agreed budget without adding costs through scope creep, which gave me great peace of mind. I was especially impressed with how courteous they were to our neighbors and how well they kept to their schedule. The entire process was smooth, and the results exceeded my expectations. I wholeheartedly recommend Laguna Bay Developing Company to anyone looking for quality workmanship and reliable service."

Robert R on December 2025


Avatar for EC_CONSTRUCTION INC

EC_CONSTRUCTION INC

5.00(
5
)
Approved Pro

EC_CONSTRUCTION INC

5.00(
5
)
Approved Pro
15 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 Prime Construction Services, Inc.

Prime Construction Services, Inc.

5.00(
2
)
Approved Pro

Prime Construction Services, Inc.

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

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 general contractor 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! ************ VISIT OUR VIRTUAL TOUR ************** https://players.cupix.com/p/BEWLWLeq *************** COPY & PASTE THIS ADDRESS TO YOUR BROWSER

"Andrew Farias was very professional. He was extremely detailed and finished my ADU right within out agreed price. Andrew was always available to answer any questions and was always very responsive to my emails and texts. He kept me well informed at each phase of my project. The quality of his work was top notch and i feel he went above and beyond. My ADU turned out better than i could have imagined and i would absolutely hire him again. I highly recommend Andrew and Prime Construction ."

Kimberly N on March 2022

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 general contractor 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! ************ VISIT OUR VIRTUAL TOUR ************** https://players.cupix.com/p/BEWLWLeq *************** COPY & PASTE THIS ADDRESS TO YOUR BROWSER

"Andrew Farias was very professional. He was extremely detailed and finished my ADU right within out agreed price. Andrew was always available to answer any questions and was always very responsive to my emails and texts. He kept me well informed at each phase of my project. The quality of his work was top notch and i feel he went above and beyond. My ADU turned out better than i could have imagined and i would absolutely hire him again. I highly recommend Andrew and Prime Construction ."

Kimberly N on March 2022


M & R Essential Contractors

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

M & R Essential Contractors

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
8 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 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 guaranteeing 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 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 guaranteeing your satisfaction!

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

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Ontario, 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.