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Addition to existing structure builders in West Covina

Avatar for Lira Construction Group
Lira Construction Group
825 Windwood Dr
5.00(
2
)
Approved Pro
Lira Construction Group
825 Windwood Dr
5.00(
2
)
Approved Pro
3 years of experience
Free onsite estimate

Lira Construction Group 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!

"Patrick and he's team are the best in town! They came in did the framing work as he described, passed all inspections with no problem! He really knows what he is doing and I 100% recommended him!"

Cesar V on February 2025

Lira Construction Group 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!

"Patrick and he's team are the best in town! They came in did the framing work as he described, passed all inspections with no problem! He really knows what he is doing and I 100% recommended him!"

Cesar V on February 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
7 years of experience
Free onsite estimate

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 Beverly Builders Group
Beverly Builders Group
6851 Laurel Canyon Blvd #3
4.96(
58
)
Approved Pro
Beverly Builders Group
6851 Laurel Canyon Blvd #3
4.96(
58
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
9 years of experience

General contractor specializing in residential homes, design & build contractor. Call us today for a free estimate!

"We just had our kitchen completely renovated by Beverly Builders Group, and we couldn't be happier with the end result! Lawrence was our contractor and he fully brought our vision to life!!! My family and I went out of the country while the kitchen renovations were done and Lawrence took care of everything for us. He was super easy to get in contact with when we needed him or had any questions. He honestly went above and beyond for us and I loved how transparent he was about the job along the way. I've worked with other contractors in the past that weren't so honest and it was such a nice experience this time around. Emily was our project coordinator and designer and kept us updated daily on what was happening. We were always in communication with her and she overlooked our shopping list of all appliances so nothing was missed on our installation dates. Their team was amazing and I highly recommend them to anyone who wants the best! We were so happy with them that our master bathroom"

Rafael M on December 2024

General contractor specializing in residential homes, design & build contractor. Call us today for a free estimate!

"We just had our kitchen completely renovated by Beverly Builders Group, and we couldn't be happier with the end result! Lawrence was our contractor and he fully brought our vision to life!!! My family and I went out of the country while the kitchen renovations were done and Lawrence took care of everything for us. He was super easy to get in contact with when we needed him or had any questions. He honestly went above and beyond for us and I loved how transparent he was about the job along the way. I've worked with other contractors in the past that weren't so honest and it was such a nice experience this time around. Emily was our project coordinator and designer and kept us updated daily on what was happening. We were always in communication with her and she overlooked our shopping list of all appliances so nothing was missed on our installation dates. Their team was amazing and I highly recommend them to anyone who wants the best! We were so happy with them that our master bathroom"

Rafael M on December 2024


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


Avatar for Golan Remodeling, Inc.
Golan Remodeling, Inc.
20723 Chase Street
4.85(
17
)
Approved Pro
Golan Remodeling, Inc.
20723 Chase Street
4.85(
17
)
Approved Pro
Customers say: Quality work
20 years of experience
Free onsite estimate

Golan Remodeling, Inc. is one of the state's premier home improvement companies servicing the Los Angeles and Ventura Counties. We specialize in complete bathroom and kitchen detailed remodeling. We are committed to provide all of our customers with reasonable pricing, quality workmanship, and professional service. We are extremely professional and regardless of how big or small the project may be we always take pride in our company name and our work. For all of your home improvement needs Golan Remodeling, Inc. is above and beyond the rest.

"Golan Remodeling just finished a bathroom remodel for us, and we?re beyond impressed.The project manager was fantastic. He walked us through every step and made sure we were happy with the progress. The tile work and fixtures they installed are beautiful, and the whole bathroom feels like a spa now. The team was professional, clean, and respectful of our home. They are the best in Los Angeles. I?d give them 10 stars if I could!"

Mike C on March 2025

Golan Remodeling, Inc. is one of the state's premier home improvement companies servicing the Los Angeles and Ventura Counties. We specialize in complete bathroom and kitchen detailed remodeling. We are committed to provide all of our customers with reasonable pricing, quality workmanship, and professional service. We are extremely professional and regardless of how big or small the project may be we always take pride in our company name and our work. For all of your home improvement needs Golan Remodeling, Inc. is above and beyond the rest.

"Golan Remodeling just finished a bathroom remodel for us, and we?re beyond impressed.The project manager was fantastic. He walked us through every step and made sure we were happy with the progress. The tile work and fixtures they installed are beautiful, and the whole bathroom feels like a spa now. The team was professional, clean, and respectful of our home. They are the best in Los Angeles. I?d give them 10 stars if I could!"

Mike C on March 2025


DAM Ventures, Inc.
28851 Industry Drive
4.33(
87
)
Approved Pro
DAM Ventures, Inc.
28851 Industry Drive
4.33(
87
)
Approved Pro
Customers say: Quality work
10 local quotes requested
9 years of experience

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!

"Very good customer service."

jay l on January 2022

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!

"Very good customer service."

jay l on January 2022


Avatar for B Cutler Inc
B Cutler Inc
5040 Kimball Street
5.00(
2
)
Approved Pro
B Cutler Inc
5040 Kimball Street
5.00(
2
)
Approved Pro
Customers say: Quick response
3 years of experience
Free onsite estimate

Licensed & Bonded Contractor Specializing In Fire, Water, & Mold Damage Remediation & Restoration. Accessory Dwelling Units (ADUs) & residential & commercial additions. Veteran Owned Small Business With 45+ Years Of Family Experience As Pasadena Based Designers & Builders

"There was mold in my closet and I knew it was probably not a great idea to live with it. Chris Gibbons gave me clear and useful information about the options and trade-offs and broke through the noise. Seems like the other "experts" and insurance people I talked to were just adding confusion. Recommend Paul Davis Pasadena highly if you have mold."

Leonard M on July 2023

Licensed & Bonded Contractor Specializing In Fire, Water, & Mold Damage Remediation & Restoration. Accessory Dwelling Units (ADUs) & residential & commercial additions. Veteran Owned Small Business With 45+ Years Of Family Experience As Pasadena Based Designers & Builders

"There was mold in my closet and I knew it was probably not a great idea to live with it. Chris Gibbons gave me clear and useful information about the options and trade-offs and broke through the noise. Seems like the other "experts" and insurance people I talked to were just adding confusion. Recommend Paul Davis Pasadena highly if you have mold."

Leonard M on July 2023


RET Construction Corp
8035 Linwalt Street
4.98(
23
)
Approved Pro
RET Construction Corp
8035 Linwalt Street
4.98(
23
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
21 years of experience

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"Kevin brought our dream ADU to life! He is an amazing contractor who pays great attention to detail and he has several licenses which insured his work was of the highest quality. He REALLY listens to what the customer wants and he delivers! We are SO pleased with our new ADU and we offer him our highest recommendation!"

gabriella p on September 2022

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"Kevin brought our dream ADU to life! He is an amazing contractor who pays great attention to detail and he has several licenses which insured his work was of the highest quality. He REALLY listens to what the customer wants and he delivers! We are SO pleased with our new ADU and we offer him our highest recommendation!"

gabriella p on September 2022


Avatar for Embee & Associates, Inc.
Embee & Associates, Inc.
8010 Haven Avenue
4.50(
4
)
Approved Pro
Embee & Associates, Inc.
8010 Haven Avenue
4.50(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

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

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 Universal Home Design, Inc.
Universal Home Design, Inc.
5404 Whitsett Ave # 181
4.89(
72
)
Approved Pro
Universal Home Design, Inc.
5404 Whitsett Ave # 181
4.89(
72
)
Approved Pro
Customers say: True professional
45 local quotes requested
23 years of experience

Universal Home Design, Inc., has been serving the area since 2002. Our commitment is to provide you with the absolute best quality level of service possible. From additions to remodels to major home repairs and renovation Universal Home Design, Inc., is highly trained to make sure you get exactly what you want. We will go above and beyond and will never leave the job until you are completely satisfied. Choose Universal Home Design, Inc., today and your home will look brand new.

"Universal Home Design, Inc. did a fantastic job. The remodeled bathroom looks like an upper class hotel room. The owner, Oury, expertly coordinated many different groups of people to get the general work done, the electricity wired, and the permitting process completed and approved. He kept us informed at every phase of the project. Oury is very knowledgeable and very personable. I will recommend Universal Home Design, Inc. to family and friends."

Gail M on June 2025

Universal Home Design, Inc., has been serving the area since 2002. Our commitment is to provide you with the absolute best quality level of service possible. From additions to remodels to major home repairs and renovation Universal Home Design, Inc., is highly trained to make sure you get exactly what you want. We will go above and beyond and will never leave the job until you are completely satisfied. Choose Universal Home Design, Inc., today and your home will look brand new.

"Universal Home Design, Inc. did a fantastic job. The remodeled bathroom looks like an upper class hotel room. The owner, Oury, expertly coordinated many different groups of people to get the general work done, the electricity wired, and the permitting process completed and approved. He kept us informed at every phase of the project. Oury is very knowledgeable and very personable. I will recommend Universal Home Design, Inc. to family and friends."

Gail M on June 2025

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

Yes, you can add a bathroom on a concrete slab, but the crew will need to saw-cut the slab, trench in new supply and drain lines, and then patch the concrete without weakening the foundation. Working with an experienced plumber and concrete pro keeps the structure intact and helps the new bathroom pass inspections.

schedule covers planning, permits, framing, rough-ins, finishes, and punch-list items. 

Larger spaces or extensive plumbing and electrical upgrades can stretch the timeline, while a simple powder-room conversion may wrap up faster. Hiring licensed pros helps keep the schedule on track and the work up to code.

The best location depends on how your family uses the space. An upstairs bath keeps nighttime trips close to the bedrooms, while a first-floor powder room is handy for guests and everyday traffic. 

Think about where plumbing lines already run, how much square footage you can spare, and what layout changes fit your budget. A pro can map out the smartest spot and handle any code hurdles.

With the right planning, you can carve out a bathroom in almost any part of the house. A successful addition requires sufficient space, proper ventilation, and access to plumbing and electrical systems. Structural modifications and adherence to building codes are essential. 

This process demands careful planning and the coordination of specialized professionals who ensure that the new space meets all code requirements and functional needs.

Under specific conditions, adding an extra bedroom can boost home value more than adding a bathroom. Home value is driven by overall configuration, market demand, and functional balance. A new bedroom influences the property’s appeal in different ways, while an additional bathroom enhances living convenience. Evaluating the current layout and market trends determines the optimal choice for maximum value.

The West Covina, 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.
master bedroom with fireplace
Jun 26, 2025
Jun 26, 2025
Budget for bedroom remodel costs based on factors such as bedroom size, remodel type, features, materials, labor, and more.
CONTRACTOR LOOKING OVER HOME DEVELOPMENT
Apr 19, 2025
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Outdoor view of the modern house
Jun 16, 2025
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BRIGHT OPEN ATTIC SPACE
Jun 10, 2025
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white and gray kitchen with butchers block countertop
Apr 8, 2025
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built-in outdoor kitchen with grill and sink
Apr 30, 2025
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