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Addition to existing structure builders in Newark

Avatar for Square Three, Inc.
Square Three, Inc.
830 Stewart Dr #272
4.92(
6
)
Approved Pro
Square Three, Inc.
830 Stewart Dr #272
4.92(
6
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
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. Our senior team has 10-20 years of experience specifically in the SF Bay Area. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Sanjeev has a solid team working for him that is very capable and deliver quality work. Very flexible and always trying to accommodate our needs even with unexpected changes to the project plan. Highly recommended."

Jannik O on April 2022

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. Our senior team has 10-20 years of experience specifically in the SF Bay Area. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Sanjeev has a solid team working for him that is very capable and deliver quality work. Very flexible and always trying to accommodate our needs even with unexpected changes to the project plan. Highly recommended."

Jannik O on April 2022


Avatar for Remodeling Heroes
Remodeling Heroes
2515 Santa Clara Ave
New on HomeAdvisorNew on Angi
Approved Pro
Remodeling Heroes
2515 Santa Clara Ave
New on AngiNew on HomeAdvisor
Approved Pro
4 years of experience
Free onsite estimate

Here at Remodeling Heroes , we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

Here at Remodeling Heroes , we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!


Avatar for Fixit Construction, Inc.
Fixit Construction, Inc.
184 Bowling Green Street
3.00(
1
)
Approved Pro
Fixit Construction, Inc.
184 Bowling Green Street
3.00(
1
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 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!

"They were professional and completed the project on time."

Elizabete T on September 2016

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!

"They were professional and completed the project on time."

Elizabete T on September 2016


Avatar for Bay Quality Construction, Inc.
Bay Quality Construction, Inc.
110 Ryan Industrial Ct
4.88(
8
)
Approved Pro
Bay Quality Construction, Inc.
110 Ryan Industrial Ct
4.88(
8
)
Approved Pro
Customers say: Quick response
22 local quotes requested
5 years of experience

Bay Quality Construction, 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, is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"It is never an easy experience when damage occurs in one's home. Even less fun when it is a rental property and you have tenants there. Our kitchen flooded and after several weeks of demolition, water and asbestos abatement work, we were ready to find a contractor to jump in and put things back together. Diego and his team from Bay Quality has been AMAZING! While it turned out that he was on the lower side of all of the estimates, that was not why we chose him and his company. We chose him because he is a problem solver. Building new vs reconstruction takes a different approach. Of the 3 contractors I spoke with, Diego impressed me with his willingness to find solutions. I got a sense from other reviews that he would work quickly. In less than two weeks, he had the kitchen back together with new cabinets, countertops, flooring and appliances. He was flexible, communicative, prompt and an absolute pleasure to work with. If you're looking for a contractor for your next project,"

Erik J on January 2025

Bay Quality Construction, 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, is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"It is never an easy experience when damage occurs in one's home. Even less fun when it is a rental property and you have tenants there. Our kitchen flooded and after several weeks of demolition, water and asbestos abatement work, we were ready to find a contractor to jump in and put things back together. Diego and his team from Bay Quality has been AMAZING! While it turned out that he was on the lower side of all of the estimates, that was not why we chose him and his company. We chose him because he is a problem solver. Building new vs reconstruction takes a different approach. Of the 3 contractors I spoke with, Diego impressed me with his willingness to find solutions. I got a sense from other reviews that he would work quickly. In less than two weeks, he had the kitchen back together with new cabinets, countertops, flooring and appliances. He was flexible, communicative, prompt and an absolute pleasure to work with. If you're looking for a contractor for your next project,"

Erik J on January 2025


Avatar for Hagenbach Construction
Hagenbach Construction
2668 Cinnabar Hills Ct
4.75(
16
)
Approved Pro
Hagenbach Construction
2668 Cinnabar Hills Ct
4.75(
16
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
43 years of experience

Hagenbach Construction is a locally owned and operated company with over 40 years in business with experience in new home construction, room additions, ADU units and Casitas, kitchen and bathroom remodels and all aspects of home remodeling. Let us show you our stress-free, reliable and professional touch for any of your home needs. We're committed to excellence in customer service and professional quality workmanship. Call today to see what expertise can do for the overall value of your project.

"The finished product is nothing short of stunning. They have some incredibly talented craftsmen, and everyone that's been by so far is absolutely speechless! We plan to have them back for future projects. Remodeling is stressful and John & Amy worked diligently to address all concerns in a timely manner. We are very happy with the addition to our home."

Shayna S on August 2023

Hagenbach Construction is a locally owned and operated company with over 40 years in business with experience in new home construction, room additions, ADU units and Casitas, kitchen and bathroom remodels and all aspects of home remodeling. Let us show you our stress-free, reliable and professional touch for any of your home needs. We're committed to excellence in customer service and professional quality workmanship. Call today to see what expertise can do for the overall value of your project.

"The finished product is nothing short of stunning. They have some incredibly talented craftsmen, and everyone that's been by so far is absolutely speechless! We plan to have them back for future projects. Remodeling is stressful and John & Amy worked diligently to address all concerns in a timely manner. We are very happy with the addition to our home."

Shayna S on August 2023


Avatar for Aria Custom Home Builder
Aria Custom Home Builder
6376 Mayo Drive
5.00(
2
)
Approved Pro
Aria Custom Home Builder
6376 Mayo Drive
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers 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.

"They responded in a timely manner and were able to get the job done quickly to the date we asked with great expertise work. We were very satisfied and will use them again for another project."

Sheri A on October 2019

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers 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.

"They responded in a timely manner and were able to get the job done quickly to the date we asked with great expertise work. We were very satisfied and will use them again for another project."

Sheri A on October 2019


Avatar for Major One Construction, Inc.
Major One Construction, Inc.
2845 Moorpark Avenue
New on HomeAdvisorNew on Angi
Approved Pro
Major One Construction, Inc.
2845 Moorpark Avenue
New on AngiNew on HomeAdvisor
Approved Pro
22 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 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.


AM GENERAL CONTRACTOR
2341 W Ave #133
5.00(
2
)
Approved Pro
AM GENERAL CONTRACTOR
2341 W Ave #133
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 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.

"What ever he plans for the project,He compleat that.He is honest and fair.I will refer him to my friends and family."

Mina R on November 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.

"What ever he plans for the project,He compleat that.He is honest and fair.I will refer him to my friends and family."

Mina R on November 2020


JCM GLOBAL RE VENTURE
4285 Payne Ave #9071
5.00(
2
)
Approved Pro
JCM GLOBAL RE VENTURE
4285 Payne Ave #9071
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

Seventeen years of experience. 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. Call us today!

"I am very grateful and glad to have the opportunity to hire this company to help us renovate my old kitchen. The contractor is very professional, knowledgeable, passionate and energetic, accurately controls the time to ensure the safe progress of the project, carefully monitors every detail, and the workers are experienced and arrive on time every day. A trustworthy company and trustworthy contractor and trustworthy workers. Thank JCM"

Zoe H on July 2023

Seventeen years of experience. 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. Call us today!

"I am very grateful and glad to have the opportunity to hire this company to help us renovate my old kitchen. The contractor is very professional, knowledgeable, passionate and energetic, accurately controls the time to ensure the safe progress of the project, carefully monitors every detail, and the workers are experienced and arrive on time every day. A trustworthy company and trustworthy contractor and trustworthy workers. Thank JCM"

Zoe H on July 2023


Avatar for Springs Construction Corporation
Springs Construction Corporation
881 Hurlingame Ave
New on HomeAdvisorNew on Angi
Approved Pro
Springs Construction Corporation
881 Hurlingame Ave
New on AngiNew on HomeAdvisor
Approved Pro
66 years of experience
Free onsite estimate

Since 1959, Springs Construction has built its reputation on fine craftsmanship, technical expertise and solid project management.We take a proactive, client driven approach to every one of our projects, exceeding our customers vision for their homes. We want you to feel comfortable and safe during the disruption and enjoy your home for years to come.

Since 1959, Springs Construction has built its reputation on fine craftsmanship, technical expertise and solid project management.We take a proactive, client driven approach to every one of our projects, exceeding our customers vision for their homes. We want you to feel comfortable and safe during the disruption and enjoy your home for years to come.

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

Building an in-law suite takes between two and seven months. Converting an existing basement, attic, or room can be done in about two months. Constructing a new addition or detached suite often takes four to five months for construction, plus one to two months for permits. The bigger the suite, the longer it will take. 

Yes, you can build an in-law suite in your backyard if you meet local building codes and zoning regulations. An in-law suite often occupies 300 to 800 square feet. Be sure to follow size restrictions, utility separations, and entrance requirements. Hiring a qualified contractor ensures you meet all regulatory requirements because they can pull permits, double-check local code, and gather other skilled pros to work on your suite. 

An in-law suite is a self-contained living space attached to—or detached from—your main home. Expect a bedroom, full bath, and a kitchenette or compact living area. The setup gives relatives privacy, doubles as a potential rental, and can lift your property value. To qualify as a legal dwelling, the suite must meet local building codes and zoning rules.

The Newark, 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.
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.
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.
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