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Addition to existing structure builders in West Hills

Avatar for Simon Construction Inc
Simon Construction Inc
5404 WHITSETT AVE #125
5.00(
8
)
Approved Pro
Simon Construction Inc
5404 WHITSETT AVE #125
5.00(
8
)
Approved Pro
10 years of experience
Free onsite estimate

At Simon Construction Inc, we’re a locally owned company built on honesty, integrity, and a true passion for quality work. We treat every home as if it were our own and take pride in seeing each project through from start to finish. Specializing in kitchen and bathroom remodels, our skilled team works together to deliver outstanding results and lasting relationships—with your satisfaction always our top priority.

"Simon Construction was reliable, efficient and creative. No job was too small for them. They worked consistently and always arrived when planned. We would wholeheartedly recommend them for all your construction needs."

brenda s on May 2025

At Simon Construction Inc, we’re a locally owned company built on honesty, integrity, and a true passion for quality work. We treat every home as if it were our own and take pride in seeing each project through from start to finish. Specializing in kitchen and bathroom remodels, our skilled team works together to deliver outstanding results and lasting relationships—with your satisfaction always our top priority.

"Simon Construction was reliable, efficient and creative. No job was too small for them. They worked consistently and always arrived when planned. We would wholeheartedly recommend them for all your construction needs."

brenda s on May 2025


Avatar for VULCAN BUILD INC
VULCAN BUILD INC
8549 WILSHIRE BLVD # 3189
5.00(
21
)
Approved Pro
VULCAN BUILD INC
8549 WILSHIRE BLVD # 3189
5.00(
21
)
Approved Pro
Customers say: Quick response
13 local quotes requested
7 years of experience

VULCAN BUILD 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.

"I’m incredibly impressed with Vulcan Build. From the initial consultation to the final walkthrough, everything was handled with care and precision. Michael’s team was efficient, tidy, and proactive in keeping me updated. The results speak for themselves — high-quality work delivered right on time."

Jacob H on April 2025

VULCAN BUILD 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.

"I’m incredibly impressed with Vulcan Build. From the initial consultation to the final walkthrough, everything was handled with care and precision. Michael’s team was efficient, tidy, and proactive in keeping me updated. The results speak for themselves — high-quality work delivered right on time."

Jacob H on April 2025


Avatar for Dreamland DB, Corp.
Dreamland DB, Corp.
19336 Calvert Street
New on HomeAdvisorNew on Angi
Approved Pro
Dreamland DB, Corp.
19336 Calvert Street
New on AngiNew on HomeAdvisor
Approved Pro
4 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.


Avatar for West Side Builder
West Side Builder
3161 Fairfield Ave
5.00(
7
)
Approved Pro
West Side Builder
3161 Fairfield Ave
5.00(
7
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

We are a locally owned and operated company that values honesty, integrity, and will treat your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced, while still paying close attention to the details of each and every project that we are involved with. We take pride in building long lasting relationships and look forward to hearing from you!

"They were on time and they did a great job"

Katie G on February 2022

We are a locally owned and operated company that values honesty, integrity, and will treat your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced, while still paying close attention to the details of each and every project that we are involved with. We take pride in building long lasting relationships and look forward to hearing from you!

"They were on time and they did a great job"

Katie G on February 2022


Avatar for Green Renovation Group, Inc.
Green Renovation Group, Inc.
15030 Ventura Boulevard Suite 11
4.35(
23
)
Approved Pro
Green Renovation Group, Inc.
15030 Ventura Boulevard Suite 11
4.35(
23
)
Approved Pro
Customers say: Quality work
44 years of experience
Free onsite estimate

Established in 1981. Green Renovation Group Inc. is a licensed general contracting company with over 39 years of experience, which specializes in home remodeling. We are fully licensed and bonded construction company, specializing in utilizing environmentally and economically friendly equipment and techniques to renovate homes. Our priority is to help our customers to create their dream homes in a healthy and efficient way for both their families and the world. Back in 1981, Brad opened the company, and since then we have delivered countless of smiles to our customers. We are committed to completing your project on schedule and within your budget. We take pride in our work, as well as your home, and are dedicated to keeping everything as comfortable and clean as possible throughout each stage of project. Don't hesitate to give us a call at (877) 740-6059 for a FREE estimate and consultation. Call us Today!

"We had a great experience remodeling our bathroom. Sean was very professional to work with. They also helped out with the design of our master bed and bathroom, and we love it! Highly recommend to use them!"

Jose C on May 2023

Established in 1981. Green Renovation Group Inc. is a licensed general contracting company with over 39 years of experience, which specializes in home remodeling. We are fully licensed and bonded construction company, specializing in utilizing environmentally and economically friendly equipment and techniques to renovate homes. Our priority is to help our customers to create their dream homes in a healthy and efficient way for both their families and the world. Back in 1981, Brad opened the company, and since then we have delivered countless of smiles to our customers. We are committed to completing your project on schedule and within your budget. We take pride in our work, as well as your home, and are dedicated to keeping everything as comfortable and clean as possible throughout each stage of project. Don't hesitate to give us a call at (877) 740-6059 for a FREE estimate and consultation. Call us Today!

"We had a great experience remodeling our bathroom. Sean was very professional to work with. They also helped out with the design of our master bed and bathroom, and we love it! Highly recommend to use them!"

Jose C on May 2023


Avatar for Aria Pro Builders
Aria Pro Builders
23823 Via Campana
4.11(
9
)
Approved Pro
Aria Pro Builders
23823 Via Campana
4.11(
9
)
Approved Pro
Customers say: Quick response
6 years of experience
Free onsite estimate

10 years

"Aria Pro Builders is changing the perception of the construction business industry. Nir is an honest, talented, creative General Contractor who runs his business with the highest integrity and care. All of his crew members have been amazing, professional and the highest quality in their trade. Nir completely remodeled 2 bathrooms; eliminating outdated tubs; transforming the space with large modern walk in showers complete with river rock shower floors and tile to ceiling, beautiful floating vanities, all expertly installed to perfection. All new tile floors elevated these bathrooms into Spa Settings! All on time or ahead of schedule! The quality and ease of the bathroom remodels led us to have Aria Pro Builders now fully remodel our kitchen, living room and transform our powder room into a full modern bath. Nir's expertise and amazing staff will guide you effortlessly through any project."

Lori S on January 2023

10 years

"Aria Pro Builders is changing the perception of the construction business industry. Nir is an honest, talented, creative General Contractor who runs his business with the highest integrity and care. All of his crew members have been amazing, professional and the highest quality in their trade. Nir completely remodeled 2 bathrooms; eliminating outdated tubs; transforming the space with large modern walk in showers complete with river rock shower floors and tile to ceiling, beautiful floating vanities, all expertly installed to perfection. All new tile floors elevated these bathrooms into Spa Settings! All on time or ahead of schedule! The quality and ease of the bathroom remodels led us to have Aria Pro Builders now fully remodel our kitchen, living room and transform our powder room into a full modern bath. Nir's expertise and amazing staff will guide you effortlessly through any project."

Lori S on January 2023


Avatar for Francisco Painting & General Construction Company
Francisco Painting & General Construction Company
16507 Dearborn Street
New on HomeAdvisorNew on Angi
Approved Pro
Francisco Painting & General Construction Company
16507 Dearborn Street
New on AngiNew on HomeAdvisor
Approved Pro
25 years of experience
Free onsite estimate

Francisco Painting & General Construction Company is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of 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!

Francisco Painting & General Construction Company is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of 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!


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


YOR Construction and Investments, Inc.
12135 Miranda St
5.00(
1
)
Approved Pro
YOR Construction and Investments, Inc.
12135 Miranda St
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

YOR Construction and Investments, 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.

"Excellent customer service and great job done!"

J M on April 2021

YOR Construction and Investments, 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.

"Excellent customer service and great job done!"

J M on April 2021


Larry Dow Construction
6021 Hackers Lane
New on HomeAdvisorNew on Angi
Approved Pro
Larry Dow Construction
6021 Hackers Lane
New on AngiNew on HomeAdvisor
Approved Pro
6 years of experience
Free onsite estimate

Larry Dow Construction has served the Agoura Hills and Malibu areas for years with pride and integrity. With a focus on providing excellent work at an affordable price, let Larry and the pros with Larry Down Construction provide the work that truly meets your needs Call for a FREE ESTIMATE!

Larry Dow Construction has served the Agoura Hills and Malibu areas for years with pride and integrity. With a focus on providing excellent work at an affordable price, let Larry and the pros with Larry Down Construction provide the work that truly meets your needs Call for a FREE ESTIMATE!

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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
From average costs to expert advice, get all the answers you need to get your job done.
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