Top-rated second story addition builders.

Get matched with top second story addition builders in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Second story addition builders in Downey

Avatar for Better Together Builders
Better Together Builders
7026 Rhea Ave
4.90(
134
)
Approved Pro
Better Together Builders
7026 Rhea Ave
4.90(
134
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
2075 local quotes requested

We are a full design build firm, specializing in kitchen, bathroom, and complete home remodeling. This also includes additions and ADU's! In the process of creating your dream home, our goal is to provide you with the most up-to-date ideas and solutions. A "one stop shop" for all your remodeling needs. Our team builds and remodels homes with various styles such as: traditional, Spanish, modern, contemporary and beyond. Call us today to get your in-home FREE consultation! Hand in Hand we will make this experience unique and successful. So let's make it Better together! Better Together Builders Lic#1047689 818-858-9840 Info@bettertogetherbuilders.com **Please note: Due to high demand, we are no longer able to do projects that are under a budget of $7000.**

"Stuff happens, and this business knows how to handle it! We had a stain on the ceiling. Ofri from BTB came over and turned on the water from the upstairs bathtub and then the shower stall. The ceiling became moist after the shower was turned on. Ofri then came back with a plumber. He turned on the upstairs bathtub. After they left, water dripped from the ceiling. Ofri had the plumber immediately send over a team for a service call. They broke open a hole in the ceiling and found that a pipe leading to the bathtub was so rusty it had holes. They took videos showing other pipes leading to the bathtub were also very rusty. While the team was still there, Ofri gave us prices, sent over the paperwork and the pipes were replaced within a of couple hours. Fabulous! Ofri had thought it would take a lot longer to complete the plumbing work. Therefore, her pricing did not align with the actual work performed. She brought in Alon, who substantially reduced the price to our satisfaction. Their responsiveness and reasonableness earned them my highest rating. Thank you Ofri, Alon and the BTB team!"

Barbara R on January 2025

We are a full design build firm, specializing in kitchen, bathroom, and complete home remodeling. This also includes additions and ADU's! In the process of creating your dream home, our goal is to provide you with the most up-to-date ideas and solutions. A "one stop shop" for all your remodeling needs. Our team builds and remodels homes with various styles such as: traditional, Spanish, modern, contemporary and beyond. Call us today to get your in-home FREE consultation! Hand in Hand we will make this experience unique and successful. So let's make it Better together! Better Together Builders Lic#1047689 818-858-9840 Info@bettertogetherbuilders.com **Please note: Due to high demand, we are no longer able to do projects that are under a budget of $7000.**

"Stuff happens, and this business knows how to handle it! We had a stain on the ceiling. Ofri from BTB came over and turned on the water from the upstairs bathtub and then the shower stall. The ceiling became moist after the shower was turned on. Ofri then came back with a plumber. He turned on the upstairs bathtub. After they left, water dripped from the ceiling. Ofri had the plumber immediately send over a team for a service call. They broke open a hole in the ceiling and found that a pipe leading to the bathtub was so rusty it had holes. They took videos showing other pipes leading to the bathtub were also very rusty. While the team was still there, Ofri gave us prices, sent over the paperwork and the pipes were replaced within a of couple hours. Fabulous! Ofri had thought it would take a lot longer to complete the plumbing work. Therefore, her pricing did not align with the actual work performed. She brought in Alon, who substantially reduced the price to our satisfaction. Their responsiveness and reasonableness earned them my highest rating. Thank you Ofri, Alon and the BTB team!"

Barbara R on January 2025


Avatar for 2bBuilt
2bBuilt
13335 Oxnard, Van Nuys CA 91401
5.00(
3
)
Approved Pro
2bBuilt
13335 Oxnard, Van Nuys CA 91401
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
607 local quotes requested

Toubi Built is a professional who plans, designs and oversees the construction of buildings. They are responsible for designing buildings to create unique and well-organized structures. Their duties include meeting with clients to discuss their vision, drawing up building plans and modifying their designs throughout the building process to maximize structural integrity. We are also responsible for public safety and overseeing of projects.

"This company was very professional and I used their services to produce construction documents for an ADU. He got us a permit and we were able to meet our project requirements."

Shy r on June 2024

Toubi Built is a professional who plans, designs and oversees the construction of buildings. They are responsible for designing buildings to create unique and well-organized structures. Their duties include meeting with clients to discuss their vision, drawing up building plans and modifying their designs throughout the building process to maximize structural integrity. We are also responsible for public safety and overseeing of projects.

"This company was very professional and I used their services to produce construction documents for an ADU. He got us a permit and we were able to meet our project requirements."

Shy r on June 2024


Avatar for Decoland, Inc.
Decoland, Inc.
5.00(
5
)
Approved Pro
Decoland, Inc.
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2132 local quotes requested

**Decoland Landscape & Construction Design DOES IT ALL** We were founded in 2007 with one goal in mind - to provide a FULL RANGE superior landscaping services, including landscaping, hardscaping and lawn maintenance, at affordable rates to the residents of Laguna Hills. Our company has grown over the years from a two person operation into a full staff of professionals able to meet your every landscaping need. We are dedicated to building long term relationships with our clients by providing the highest standard of quality on each and every project we do. Our reputation for customer satisfaction in the Laguna Hills area is what has made Decoland Landscape & Construction Design a household name in the industry. At Decoland Landscape & Construction Design, we understand that the outdoor aesthetic of your home or business is as important as your interior. We have a team of experts that will consult with you to determine your exact needs. From landscape maintenance to new construction, our residential and commercial clients in Laguna Hills know that when they call Decoland Landscape & Construction Design they will get the best. Contact us today for a FREE consultation and see the difference experience makes!

"Sean was fantastic. Not only did he help me create my Landscape vision but he walked me through the whole Process. He already knew all the HOA rules and guidelines. This was a no brainer in choosing him and Decoland to do my backyard. Anyone looking to do landscaping and/or any house remodeling should definitely look into using him. He’s already doing my other house right now. It’s coming out great."

Jr c on January 2025

**Decoland Landscape & Construction Design DOES IT ALL** We were founded in 2007 with one goal in mind - to provide a FULL RANGE superior landscaping services, including landscaping, hardscaping and lawn maintenance, at affordable rates to the residents of Laguna Hills. Our company has grown over the years from a two person operation into a full staff of professionals able to meet your every landscaping need. We are dedicated to building long term relationships with our clients by providing the highest standard of quality on each and every project we do. Our reputation for customer satisfaction in the Laguna Hills area is what has made Decoland Landscape & Construction Design a household name in the industry. At Decoland Landscape & Construction Design, we understand that the outdoor aesthetic of your home or business is as important as your interior. We have a team of experts that will consult with you to determine your exact needs. From landscape maintenance to new construction, our residential and commercial clients in Laguna Hills know that when they call Decoland Landscape & Construction Design they will get the best. Contact us today for a FREE consultation and see the difference experience makes!

"Sean was fantastic. Not only did he help me create my Landscape vision but he walked me through the whole Process. He already knew all the HOA rules and guidelines. This was a no brainer in choosing him and Decoland to do my backyard. Anyone looking to do landscaping and/or any house remodeling should definitely look into using him. He’s already doing my other house right now. It’s coming out great."

Jr c on January 2025


Avatar for McGee Construction
McGee Construction
639 Maple Ave
4.50(
8
)
Approved Pro
McGee Construction
639 Maple Ave
4.50(
8
)
Approved Pro
Customers say: Quick response
2463 local quotes requested
35 years of experience

Our building expertise includes not only remodeling of existing homes, but new custom home construction, multifamily housing, tenant improvements, commercial and industrial office buildings. Our professional staff has the experience necessary to give you the confidence to start your next project today.

"Very well. Worked closely with me To consider my needs."

Deborah C on April 2025

Our building expertise includes not only remodeling of existing homes, but new custom home construction, multifamily housing, tenant improvements, commercial and industrial office buildings. Our professional staff has the experience necessary to give you the confidence to start your next project today.

"Very well. Worked closely with me To consider my needs."

Deborah C on April 2025


Avatar for Baum Construction Development Inc
Baum Construction Development Inc
2900 Fidler Ave
4.63(
52
)
Approved Pro
Baum Construction Development Inc
2900 Fidler Ave
4.63(
52
)
Approved Pro
Customers say: Quality work
424 local quotes requested
48 years of experience

Full service remodeling and construction company. . We have a great team of professionals. All estimates are free. I offer a price and construction schedule guarantee. If I do not complete the job on the agreed upon schedule, I will pay you $200 per day until completion. I am a best selling Amazon Author having written "Sawdust to Satisfaction" a primer for people the have never worked with a contractor Visit. Www.SawdusttoSatisfaction.com for more information. I also offer consulting to homeowner's before and during their projects. I work with Real Estate Investors to assist them with the construction side of the business, and Contractors to assist them with building their businesses.

"I really enjoyed working with Mike, Chris and June. I had high hopes of getting into our remodeled home within the allotted time that was discussed in the contract but when Covid hit it made the process much longer. Our choices were out of stock or were coming in later than promised. But overall Mike and his team were so professional and so honest with me and my husband about what step they were on or any problems that came up. I would definitely recommend and rehire again in the future. Thank you Mike and Chris"

Leeanna F on March 2021

Full service remodeling and construction company. . We have a great team of professionals. All estimates are free. I offer a price and construction schedule guarantee. If I do not complete the job on the agreed upon schedule, I will pay you $200 per day until completion. I am a best selling Amazon Author having written "Sawdust to Satisfaction" a primer for people the have never worked with a contractor Visit. Www.SawdusttoSatisfaction.com for more information. I also offer consulting to homeowner's before and during their projects. I work with Real Estate Investors to assist them with the construction side of the business, and Contractors to assist them with building their businesses.

"I really enjoyed working with Mike, Chris and June. I had high hopes of getting into our remodeled home within the allotted time that was discussed in the contract but when Covid hit it made the process much longer. Our choices were out of stock or were coming in later than promised. But overall Mike and his team were so professional and so honest with me and my husband about what step they were on or any problems that came up. I would definitely recommend and rehire again in the future. Thank you Mike and Chris"

Leeanna F on March 2021


Avatar for Logos Landscape
Logos Landscape
10800 Dale Ave Space 222
5.00(
4
)
Approved Pro
Logos Landscape
10800 Dale Ave Space 222
5.00(
4
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1104 local quotes requested

Welcome to Logos Landscape! We look forward to serving you!

"Francisco and his team were very professional and did great work! I called multiple landscapers and everyone but Francisco was late to the meetings. Francisco and his team were always on time, friendly and professional, not to mention they also did great work as well! I will be using them in the future for other landscaping needs! 10/10 - Thank you to him and his Team!"

Brooke O on June 2025

Welcome to Logos Landscape! We look forward to serving you!

"Francisco and his team were very professional and did great work! I called multiple landscapers and everyone but Francisco was late to the meetings. Francisco and his team were always on time, friendly and professional, not to mention they also did great work as well! I will be using them in the future for other landscaping needs! 10/10 - Thank you to him and his Team!"

Brooke O on June 2025


Avatar for Mark Lewis & Son Construction
Mark Lewis & Son Construction
5939 E Wentworth St
4.30(
27
)
Approved Pro
Mark Lewis & Son Construction
5939 E Wentworth St
4.30(
27
)
Approved Pro
Customers say: Quality work
689 local quotes requested
41 years of experience

We are a leader in providing value-added construction services through Long Beach, Orange & So. Los Angeles Counties for over 30 years. We have a full time highly trained crew and our subcontractors are skilled, licensed tradesmen. Our pledge is to achieve a high level of satisfaction and to establish lasting relationships with our customers by providing quality craftsmanship, attention to detail, and earning your trust through exceptional performance throughout the construction process…. This is the cornerstone of all of our projects.

"Good customer service and quality work."

Tyanne P on January 2024

We are a leader in providing value-added construction services through Long Beach, Orange & So. Los Angeles Counties for over 30 years. We have a full time highly trained crew and our subcontractors are skilled, licensed tradesmen. Our pledge is to achieve a high level of satisfaction and to establish lasting relationships with our customers by providing quality craftsmanship, attention to detail, and earning your trust through exceptional performance throughout the construction process…. This is the cornerstone of all of our projects.

"Good customer service and quality work."

Tyanne P on January 2024


Avatar for C & M Kitchen Cabinets Inc
C & M Kitchen Cabinets Inc
11661 Martens River Cir
4.80(
55
)
Approved Pro
C & M Kitchen Cabinets Inc
11661 Martens River Cir
4.80(
55
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1114 local quotes requested

You can have the lasting beauty of the fine custom cabinets. We offer custom-built cabinets and refacing to enhance the beauty of your kitchen or bathrooms at a price to fit your budget. When it comes to fine workmanship, "C & M is second to none". Our cabinet designs are not mass produced, but individually designed to fit your specific needs. We do all of our own design, fabrication, finishing, and installation. C & M is a family owned operation based in Huntington Beach since 1977. Thanks to our many satisfied customers we are proudly a referral driven Business. C & M proudly provides the superior quality and workmanship that our customers demand at a price you can afford. When you want the best, Call C & M Kitchen Cabinets. 7 employees. Uses subs for counter tops & electrical. Cost is determined by the job. No travel charges apply. License #384045.

"My wife and I recently decided to redo our walk-in closet. Because of my engineering background I drew up the plans and searched multiple cabinet shops throughout Orange County only to find that none except for one could provide me with the finished cabinets I hoped to get. Having been a customer of his for as long as he has been in business I should have realized that no one can compare with the craftsmanship that goes into each job that he does. Thank you Jacques, Angel, and the rest of the crew. You did what no others would do and I am truly thankful for that."

Jim A on March 2023

You can have the lasting beauty of the fine custom cabinets. We offer custom-built cabinets and refacing to enhance the beauty of your kitchen or bathrooms at a price to fit your budget. When it comes to fine workmanship, "C & M is second to none". Our cabinet designs are not mass produced, but individually designed to fit your specific needs. We do all of our own design, fabrication, finishing, and installation. C & M is a family owned operation based in Huntington Beach since 1977. Thanks to our many satisfied customers we are proudly a referral driven Business. C & M proudly provides the superior quality and workmanship that our customers demand at a price you can afford. When you want the best, Call C & M Kitchen Cabinets. 7 employees. Uses subs for counter tops & electrical. Cost is determined by the job. No travel charges apply. License #384045.

"My wife and I recently decided to redo our walk-in closet. Because of my engineering background I drew up the plans and searched multiple cabinet shops throughout Orange County only to find that none except for one could provide me with the finished cabinets I hoped to get. Having been a customer of his for as long as he has been in business I should have realized that no one can compare with the craftsmanship that goes into each job that he does. Thank you Jacques, Angel, and the rest of the crew. You did what no others would do and I am truly thankful for that."

Jim A on March 2023


Avatar for 1 Degree Construction
1 Degree Construction
13107 Ventura Blvd Ste. 206
4.90(
135
)
Approved Pro
1 Degree Construction
13107 Ventura Blvd Ste. 206
4.90(
135
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
5332 local quotes requested

1 Degree Construction is a premier design/build construction firm in Los Angeles, providing exceptional remodeling, renovation, and new construction services for residential properties throughout Hollywood and its 10 surrounding areas, such as West Hollywood, Beverly Hills, Santa Monica, Culver City, Studio City, Burbank, Glendale, Silver Lake, Los Feliz, and Sherman Oaks. Our skilled team offers a comprehensive range of services, including: Kitchen remodeling: From minor updates to complete transformations, our team can help you create the kitchen of your dreams. Check out our kitchen remodeling portfolio for inspiration. Bathroom remodeling: Whether you're looking to update your current bathroom or create a luxurious spa-like space, we can bring your vision to life. Explore our bathroom remodeling portfolio for ideas. Home additions: Need more space for your growing family or a dedicated home office? We can help you design and build the perfect addition. View our home additions portfolio for examples. New construction: From concept to completion, we provide expert guidance and exceptional craftsmanship for new construction projects. See our new construction portfolio for inspiration. Discover our glowing reviews on Yelp at yelp.com/biz/1-degree-construction-los-angeles-2, and follow us on Facebook at facebook.com/1degreeconstruction and Instagram at instagram.com/1degreeconstruction/?hl=en for our latest projects and design ideas. Learn more about our licensing, project history, and dedication to quality workmanship on BuildZoom at buildzoom.com/contractor/1-degree-construction, and watch our informative construction process videos and client testimonials on our YouTube channel. Experience the difference with our dedicated and professional team, serving the greater Hollywood area with excellence. Contact us at 310-804-8933 to discuss your project and receive a personalized quote.

"I had a really tricky situation with an old bathroom that had plumbing issues and weird layout quirks. 1 Degree Construction came in, assessed everything honestly, and gave me a fair estimate without sugarcoating the challenges. What I appreciated most was their problem-solving mindset. They reconfigured the space brilliantly and worked closely with me on every design choice – from grout color to mirror size. Every crew member that came through was respectful of my home, wore booties inside, and genuinely seemed to care about their work. No shortcuts. I still can’t believe this is my bathroom – it’s stunning!"

Nathaniel P on June 2025

1 Degree Construction is a premier design/build construction firm in Los Angeles, providing exceptional remodeling, renovation, and new construction services for residential properties throughout Hollywood and its 10 surrounding areas, such as West Hollywood, Beverly Hills, Santa Monica, Culver City, Studio City, Burbank, Glendale, Silver Lake, Los Feliz, and Sherman Oaks. Our skilled team offers a comprehensive range of services, including: Kitchen remodeling: From minor updates to complete transformations, our team can help you create the kitchen of your dreams. Check out our kitchen remodeling portfolio for inspiration. Bathroom remodeling: Whether you're looking to update your current bathroom or create a luxurious spa-like space, we can bring your vision to life. Explore our bathroom remodeling portfolio for ideas. Home additions: Need more space for your growing family or a dedicated home office? We can help you design and build the perfect addition. View our home additions portfolio for examples. New construction: From concept to completion, we provide expert guidance and exceptional craftsmanship for new construction projects. See our new construction portfolio for inspiration. Discover our glowing reviews on Yelp at yelp.com/biz/1-degree-construction-los-angeles-2, and follow us on Facebook at facebook.com/1degreeconstruction and Instagram at instagram.com/1degreeconstruction/?hl=en for our latest projects and design ideas. Learn more about our licensing, project history, and dedication to quality workmanship on BuildZoom at buildzoom.com/contractor/1-degree-construction, and watch our informative construction process videos and client testimonials on our YouTube channel. Experience the difference with our dedicated and professional team, serving the greater Hollywood area with excellence. Contact us at 310-804-8933 to discuss your project and receive a personalized quote.

"I had a really tricky situation with an old bathroom that had plumbing issues and weird layout quirks. 1 Degree Construction came in, assessed everything honestly, and gave me a fair estimate without sugarcoating the challenges. What I appreciated most was their problem-solving mindset. They reconfigured the space brilliantly and worked closely with me on every design choice – from grout color to mirror size. Every crew member that came through was respectful of my home, wore booties inside, and genuinely seemed to care about their work. No shortcuts. I still can’t believe this is my bathroom – it’s stunning!"

Nathaniel P on June 2025


Avatar for LA Carpet Kitchen, Bath & More
LA Carpet Kitchen, Bath & More
2410 Wardlow Rd
4.26(
23
)
Approved Pro
LA Carpet Kitchen, Bath & More
2410 Wardlow Rd
4.26(
23
)
Approved Pro
Customers say: Super punctual
2424 local quotes requested
38 years of experience

Welcome to LA Carpet, your trusted partner in home remodeling. With over 35 years of experience in the industry and a staggering over 300,000 satisfied customers, we have solidified our reputation as a premier provider of top quality flooring, Kitchen, and bath solutions in Los Angeles, Orange County, and Riverside. Deals: - 50% Off A Complete Kitchen & Bathroom Remodeling - 12YR 2.99% APR Financing - 5YR 0% APR Financing

"It went very well, they are fast, cleaned up after themselves, very efficient and they installed our appliances"

Iren s on June 2023

Welcome to LA Carpet, your trusted partner in home remodeling. With over 35 years of experience in the industry and a staggering over 300,000 satisfied customers, we have solidified our reputation as a premier provider of top quality flooring, Kitchen, and bath solutions in Los Angeles, Orange County, and Riverside. Deals: - 50% Off A Complete Kitchen & Bathroom Remodeling - 12YR 2.99% APR Financing - 5YR 0% APR Financing

"It went very well, they are fast, cleaned up after themselves, very efficient and they installed our appliances"

Iren s on June 2023

...
Showing 1-10 of 924

FAQs for second story addition building service projects in Downey, CA

Converting a vaulted ceiling into a second floor requires three to six months from planning to completion. The process begins with several weeks of design and engineering, followed by permit applications, which vary in processing time by location. 

Construction itself spans several months, including framing, systems installation, and finishing work. Weather conditions, contractor availability, and inspection schedules can all influence your project timeline.

Several factors could make your conversion challenging or impossible. Inadequate roof support structures, insufficient foundation capacity, or problematic truss configurations might require prohibitively expensive modifications. 

Some homes lack the minimum ceiling height (12 feet at the lowest point) needed for functional second-floor spaces. Building code restrictions in your area might also limit conversion possibilities, particularly in historic districts or homes with specific architectural designations.

Begin with professional assessments from both an architect and a structural engineer who will evaluate your home's specific characteristics. They'll examine existing framing, measure available headroom, assess load-bearing capacity, and identify potential obstacles like HVAC ducts or plumbing vents. 

These experts will also review local building codes to determine feasibility. Their preliminary analysis provides crucial information about structural requirements and potential limitations before you commit to the project.

Whether you'll need temporary housing depends on several factors, including the project's scope and your tolerance for construction disruption. Major structural work creates significant noise, dust, and potential utility interruptions that many families find challenging to live with. Safety concerns may also arise during certain construction phases. 

Some homeowners successfully remain by isolating the construction zone and establishing clear work schedules. Discuss living arrangements with your contractor early in the planning process to make informed decisions.

The Downey, CA homeowners’ guide to second story addition 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.
Share project details to get started.