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Find Addition to existing structure builders in Castro Valley

Avatar for UNITED C CONSTRUCTION, INC

UNITED C CONSTRUCTION, INC

5.00(
3
)
•Approved Pro

UNITED C CONSTRUCTION, INC

5.00(
3
)
•Approved Pro
Customers say: Quick response
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!

"Updating our home was a dream we have had for years. But finding a good contractor in Bay Area was so difficult, that we almost gave up. We were introduced to United C Construction by our architect(who we also love!) It was exhausting trying to find someone trustworthy and not overpriced. We had luck of working with Osmar which during the project we had clear communication, expectation of setting, professionalism and superior craftsmanship. He walked us through every step of the way, and helped problem solve tough permitting and structural issues in Berkeley!"

Shelby R on September 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!

"Updating our home was a dream we have had for years. But finding a good contractor in Bay Area was so difficult, that we almost gave up. We were introduced to United C Construction by our architect(who we also love!) It was exhausting trying to find someone trustworthy and not overpriced. We had luck of working with Osmar which during the project we had clear communication, expectation of setting, professionalism and superior craftsmanship. He walked us through every step of the way, and helped problem solve tough permitting and structural issues in Berkeley!"

Shelby R on September 2024

Ashbury General Contracting and Engineering

4.50(
2
)
•Approved Pro

Ashbury General Contracting and Engineering

4.50(
2
)
•Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
36 years of experience

Mon-Fri 7a-5pm Fully integrated company. All work is done in-house by employees not sub-contractors. 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 forwards to earning your business! Book with us online or feel free to give us a call today!

"Great work for a great price."

Paul H on March 2023

Mon-Fri 7a-5pm Fully integrated company. All work is done in-house by employees not sub-contractors. 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 forwards to earning your business! Book with us online or feel free to give us a call today!

"Great work for a great price."

Paul H on March 2023

AM GENERAL CONTRACTOR

5.00(
2
)
•Approved Pro

AM GENERAL CONTRACTOR

5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
23 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

Avatar for Property Pros Construction, Inc.

Property Pros Construction, Inc.

5.00(
4
)
•Approved Pro

Property Pros Construction, Inc.

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

Property Pros Construction, Inc., proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that set us apart from the rest. We are locally owned and operated. Give us a call today!

"I would highly recommend Mike and his crew They created a new beautiful space in my old 1928 home. Their work was exceptional, and I truly appreciated the hard work, long hours and attention to detail that they all put in on every aspect of the project. They were all very professional, answered all my questions with patience, offered knowledgeable, experienced and skilled suggestions, and always with a smile on their faces and cheerful disposition."

Heidi E on November 2023

Property Pros Construction, Inc., proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that set us apart from the rest. We are locally owned and operated. Give us a call today!

"I would highly recommend Mike and his crew They created a new beautiful space in my old 1928 home. Their work was exceptional, and I truly appreciated the hard work, long hours and attention to detail that they all put in on every aspect of the project. They were all very professional, answered all my questions with patience, offered knowledgeable, experienced and skilled suggestions, and always with a smile on their faces and cheerful disposition."

Heidi E on November 2023

North Point Construction and Restoration, Inc.

New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

North Point Construction and Restoration, Inc.

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

At North Point Construction and Restoration, Inc., we pride our company on reliability, great communication, integrity, and quality work that customers can believe in. 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 and working with you! 20 years of experience.

At North Point Construction and Restoration, Inc., we pride our company on reliability, great communication, integrity, and quality work that customers can believe in. 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 and working with you! 20 years of experience.

Universal Construction Company

4.71(
7
)
•Approved Pro

Universal Construction Company

4.71(
7
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
46 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 and home improvement services that are customizable to each individual project. We specialize in additions and bathroom 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!

"He is very good, communicates well, and he is there when he says he will be and very thorough! I liked doing business with him! He explains everything that he will do before he does the job and he listens to my suggestions."

Marilyn B on June 2019

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 and home improvement services that are customizable to each individual project. We specialize in additions and bathroom 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!

"He is very good, communicates well, and he is there when he says he will be and very thorough! I liked doing business with him! He explains everything that he will do before he does the job and he listens to my suggestions."

Marilyn B on June 2019

Avatar for Fixit Construction, Inc.

Fixit Construction, Inc.

3.00(
1
)
•Approved Pro

Fixit Construction, Inc.

3.00(
1
)
•Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 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 Be Home Remodeling Inc

Be Home Remodeling Inc

5.00(
3
)
•Approved Pro

Be Home Remodeling Inc

5.00(
3
)
•Approved Pro
Super Service Award
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
27 local quotes requested

***346 PROJECTS/24 IN PROGRESS/322 COMPLETED**YOUR DREAM REMODEL AWAITS. LET'S MAKE IT HOME!** Welcome to Be Home Remodeling! We specialize in transforming homes with expert craftsmanship, innovative designs, and personalized solutions. into dream We turn houses into dream homes. With a commitment to quality craftsmanship and personalized service, we bring your vision to life, creating spaces that reflect your style and meet your needs. From kitchens to full-home remodels, we bring your vision to life, creating beautiful, functional spaces you’ll love. eHome Remodeling was founded by Benjamin, who leads our team with over 10 years of experience transforming homes across the Bay Area. We specialize in everything from detailed kitchen remodels to full-scale renovations, ensuring each space perfectly reflects your unique vision and lifestyle. At BeHome, we prioritize transparent communication, meticulous planning, and quality craftsmanship, working closely with you at every stage to create a space you’ll love coming home to. Contact us today for your FREE estimate by calling 408-616-4989 or click the request a quote link!

"Appreciate the great communication, Benjamin and his team was professional, clean after themselves and was delivering what was promised. Will definitely hire them again Thank you!"

Liran Salesman b on December 2024

***346 PROJECTS/24 IN PROGRESS/322 COMPLETED**YOUR DREAM REMODEL AWAITS. LET'S MAKE IT HOME!** Welcome to Be Home Remodeling! We specialize in transforming homes with expert craftsmanship, innovative designs, and personalized solutions. into dream We turn houses into dream homes. With a commitment to quality craftsmanship and personalized service, we bring your vision to life, creating spaces that reflect your style and meet your needs. From kitchens to full-home remodels, we bring your vision to life, creating beautiful, functional spaces you’ll love. eHome Remodeling was founded by Benjamin, who leads our team with over 10 years of experience transforming homes across the Bay Area. We specialize in everything from detailed kitchen remodels to full-scale renovations, ensuring each space perfectly reflects your unique vision and lifestyle. At BeHome, we prioritize transparent communication, meticulous planning, and quality craftsmanship, working closely with you at every stage to create a space you’ll love coming home to. Contact us today for your FREE estimate by calling 408-616-4989 or click the request a quote link!

"Appreciate the great communication, Benjamin and his team was professional, clean after themselves and was delivering what was promised. Will definitely hire them again Thank you!"

Liran Salesman b on December 2024

Avatar for Springs Construction Corporation

Springs Construction Corporation

New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Springs Construction Corporation

New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
67 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.

Avatar for Froyd and Associates, Inc.

Froyd and Associates, Inc.

5.00(
3
)
•Approved Pro

Froyd and Associates, Inc.

5.00(
3
)
•Approved Pro
Customers say: Quick response
28 local quotes requested
4 years of experience

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"I hired Anthony to do a complete remodel of my interior of my home. We knocked out walls redone all the lighting and cabinetry. He completely floored us with the results. We couldn’t be happier. Did exactly what he said he was going to do and in the time frame he promised! I’m using him on my next project my guest bathroom remodel. He’s honest and came in on budget. Good job to him and his team."

Dan B on August 2025

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"I hired Anthony to do a complete remodel of my interior of my home. We knocked out walls redone all the lighting and cabinetry. He completely floored us with the results. We couldn’t be happier. Did exactly what he said he was going to do and in the time frame he promised! I’m using him on my next project my guest bathroom remodel. He’s honest and came in on budget. Good job to him and his team."

Dan B on August 2025

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FAQs for addition to existing structure building service projects in Castro Valley, 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 Castro Valley, 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.

See all articles