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Addition to existing structure builders in San Leandro

Universal Construction Company
161 Martin Place
4.71(
7
)
Approved Pro
Universal Construction Company
161 Martin Place
4.71(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
45 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.
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 UNITED C CONSTRUCTION, INC
UNITED C CONSTRUCTION, INC
1900 Powell Street Suite 700
5.00(
3
)
Approved Pro
UNITED C CONSTRUCTION, INC
1900 Powell Street Suite 700
5.00(
3
)
Approved Pro
Customers say: Quick response
1 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
40 12th Street
4.50(
2
)
Approved Pro
Ashbury General Contracting and Engineering
40 12th Street
4.50(
2
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
35 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
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


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.


JJ Builders Inc
14686 Hanover St
New on HomeAdvisorNew on Angi
Approved Pro
JJ Builders Inc
14686 Hanover St
New on AngiNew on HomeAdvisor
Approved Pro
3 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!

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!


Avatar for Creation 7 Builders
Creation 7 Builders
1922 Tice Valley Blvd #2731
4.80(
41
)
Approved Pro
Creation 7 Builders
1922 Tice Valley Blvd #2731
4.80(
41
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
17 local quotes requested

Creation7 is one of the leading Contractor & Project management company in Northern California, committed to developing luxury homes and high-end interior fit outs. Our company is recognized for its ability to design and build singular constructions of all kinds, from civil engineering to buildings, and especially luxury homes, apartments, penthouses, warehouses, commercial offices or hospitality projects. We are dedicated to completing projects to a high standard of workmanship, efficiency and budget control. We achieve these goals by combining our long outstanding tradition of quality and personal commitment to each project in which we are involved. Through the team efforts of our talented and dedicated employees and the direct involvement of company owners in each and every project, we have maintained our reputation as company clients can depend on and trust to deliver projects as promised.

"Creation 7 really took the time and attention to complete our bathroom(s) remodel meticulously. They were consultative, thorough, and on top of the entire project. We couldn't be more pleased with the results."

Andy L on April 2025

Creation7 is one of the leading Contractor & Project management company in Northern California, committed to developing luxury homes and high-end interior fit outs. Our company is recognized for its ability to design and build singular constructions of all kinds, from civil engineering to buildings, and especially luxury homes, apartments, penthouses, warehouses, commercial offices or hospitality projects. We are dedicated to completing projects to a high standard of workmanship, efficiency and budget control. We achieve these goals by combining our long outstanding tradition of quality and personal commitment to each project in which we are involved. Through the team efforts of our talented and dedicated employees and the direct involvement of company owners in each and every project, we have maintained our reputation as company clients can depend on and trust to deliver projects as promised.

"Creation 7 really took the time and attention to complete our bathroom(s) remodel meticulously. They were consultative, thorough, and on top of the entire project. We couldn't be more pleased with the results."

Andy L on April 2025


Avatar for On Design & Remodeling INC
On Design & Remodeling INC
1798 Technology Drive Suite 229
4.99(
38
)
Approved Pro
On Design & Remodeling INC
1798 Technology Drive Suite 229
4.99(
38
)
Approved Pro
Customers say: Quick response
48 local quotes requested
5 years of experience

With years of experience serving the area, we are your solution for all your Remodeling needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Check out our 5 star reviews from happy customers! Call us today so we can discuss your needs and make a plan that fits your budget. Satisfaction guaranteed!

"I wanted to share my fantastic experience with ON Design & Remodeling during my recent bathroom remodeling project. The results are amazing, and I'm so grateful to Raz and Sofia. The bathroom now feels like a high-end spa, The tiles, fixtures, and overall design are top quality. Can't wait for future projects with ON Design & Remodeling! "

Zander K on May 2025

With years of experience serving the area, we are your solution for all your Remodeling needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Check out our 5 star reviews from happy customers! Call us today so we can discuss your needs and make a plan that fits your budget. Satisfaction guaranteed!

"I wanted to share my fantastic experience with ON Design & Remodeling during my recent bathroom remodeling project. The results are amazing, and I'm so grateful to Raz and Sofia. The bathroom now feels like a high-end spa, The tiles, fixtures, and overall design are top quality. Can't wait for future projects with ON Design & Remodeling! "

Zander K on May 2025


Avatar for Golden View Renovation, Inc.
Golden View Renovation, Inc.
1630 Oakland Rd Ste A217
4.69(
13
)
Approved Pro
Golden View Renovation, Inc.
1630 Oakland Rd Ste A217
4.69(
13
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
42 local quotes requested

Golden View Renovation 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 clients. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our clients' interests and make their concerns the basis of our business.

"Very pushy Project Managers gave us the creeps. We felt threatened, that if we did the work w/out permits that they would report us. They kept on touting their great s/w for project tracking. So spooked with didn't want them in the house again. In fact, they brag about their military training that helps them manage projects . Perhaps that's how they strategically coerce people...my wife and I certainly felt threatened and wanted nothing further to do with them. Not surprised that Yelp has posted a notice of suspicious reviews."

Gary P on September 2024

Golden View Renovation 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 clients. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our clients' interests and make their concerns the basis of our business.

"Very pushy Project Managers gave us the creeps. We felt threatened, that if we did the work w/out permits that they would report us. They kept on touting their great s/w for project tracking. So spooked with didn't want them in the house again. In fact, they brag about their military training that helps them manage projects . Perhaps that's how they strategically coerce people...my wife and I certainly felt threatened and wanted nothing further to do with them. Not surprised that Yelp has posted a notice of suspicious reviews."

Gary P on September 2024

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Addition to existing structure building services FAQs

Converting an existing space into a laundry room is more affordable than building a new addition. While new additions start at $5,000, renovating an existing space for laundry use can begin at $1,300. 

Your specific costs will depend on whether plumbing and electrical connections exist nearby, the quality of finishes you select, and whether any structural modifications are needed. Always budget extra for unexpected issues, particularly in older homes where hidden problems might surface during renovation.

The smallest practical size for a new laundry room addition is 35 square feet, which provides enough space for basic appliances and minimal storage. For renovations utilizing existing space, smaller footprints might work with space-saving solutions like stacked appliances. 

A standard-sized laundry room of 60 square feet offers more comfort and functionality, allowing for counter space and storage cabinets. The optimal size depends on your household needs and available space.

Yes, adding a laundry room requires several permits, particularly for new additions. You'll need building permits, plus specific permits for electrical work, plumbing installations, and possibly HVAC modifications. 

Requirements vary significantly by municipality, so consulting with your local building department before starting work is essential. Proceeding without proper permits can result in fines, mandatory removal of completed work, and complications when selling your property.

The timeline for completing a laundry room addition varies based on project complexity, contractor availability, and permit processing times. Factors that can extend the schedule include material delivery delays, weather conditions, and unforeseen structural issues discovered during construction. 

Renovating an existing space often requires less time than building a completely new addition. Working with an experienced contractor who can coordinate various tradespeople efficiently helps keep your project on schedule.

The homeowners guide to addition to existing structure building services
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