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Addition Contractors in Los Angeles, CA

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  1. Answer a few questions about your home project.
  2. Within seconds, get matched with top-rated local pros.
  3. Compare quotes and choose the best pro for the job.

Service Pros

    Design Everest, Inc. Logo

    In business since 2005

    About us: "Design Everest is a leading California based company in the Architecture, Engineering, and Construction (AEC) industry. We have extensive experience of 6,000+ projects throughout California and have worked in Residential and Commercial space including, but not limited to, New Homes, Remodels/Additions, ADU, Townhouses, and other Multifamily buildings. A partial list of our services for the Residential and Commercial buildings include Architectural Plans, Structural Engineering, Civil Engineering, Mechanical, Electrical & Plumbing Engineering (MEP), Title 24 energy calculations, Measured Drawings of Existing Conditions (MDEC), Structural Site Review (SSR), Structural Evaluation of the Building, Pre-fab and more. We also support our clients through the construction phase by helping them find trusted contractors through our network. Please use the link below for license information of our Architects and Engineers: https://designeverest.com/license/?utm_source=HA"

    HMS Engineering Logo

    In business since 2021

    About us: "HMS Engineering 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!"

    Jeffrey Miller Architecture and Design Logo

    In business since 2019

    About us: "Here at Jeffrey Miller Architecture and Design we have a main focus of quality over quantity! With several years of experience there is not residential or commercial job that we shy away from. We pride our business on perfection and professionalism! Please call today for an estimate and we look forward to earning your life long business!"

    MPA Design Group Logo

    In business since 2002

    About us: "We embrace all design challenges, and we see those design challenges as opportunities for innovation and creativity. We are 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."

    RS

    In business since 2010

    About us: "Welcome to Marc Sowers Bespoke Woodwork! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!"

    R Hanna Architects, Inc. Logo

    In business since 2014

    About us: "We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent customer service 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 personal and professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job."

    ROMB Structural Engineering Logo

    In business since 2015

    About us: "Structural Engineering Design for homeowners and commercial buildings, in all kinds of materials: Timber, Masonry, concrete and steel at fixed rate."

    STEN Engineering Logo

    In business since 2020

    About us: "STEN Engineering is the top structural engineering firm in the Los Angeles area. We take pride in our customers satisfaction. With a combined 20 plus years of experience, we can do it all. Call us today."

    Vana Builders, Inc. Logo
    Glendale, CA·

    Woodworking, Remodeling, Handyman , and 2 more

    "Installed 1,000ft of fence cover. Excellent work and great attitude."

    Kyle T. in November 2019

How much do addition contractors typically cost?

  • Los Angeles, California Average
    $91,356
  • Typical Range
    $56,556 - $132,775
  • Low End - High End
    $8,540 - $200,000

Frequently asked questions

  • It’s important that you verify their license is still in good standing. Also keep in mind that certain states or provinces don’t require licensing if the job is under a certain dollar amount.
  • You can find a list of your state’s licensing requirements on the HomeAdvisor website. Before you get to work with the pro, make sure their qualifications are current and acceptable to you.
  • It is always a good idea to get a copy of the pro’s insurance certificate for future records, and in case anything happens. This is a good way to feel more secure in your home project, and to weed out potential scammers.

HomeAdvisor makes it easy to connect with pros near you. You can read reviews, get quotes and book appointments all in one place.

Depending on the type of project, you may find subtle differences in the hiring process. Here’s a look at task-specific advice.

You can use HomeAdvisor to help evaluate a contractor’s qualifications. We put pros through a screening process, and award badges to high-performing contractors. You can find these badges on a pro’s HomeAdvisor profile, and sometimes, his or her website. 

Your research doesn’t stop here. Once you’ve found a few prospective companies, make an call to ask a few questions about work history, licensure and more:

  • Have you completed a job like this before?
  • Do you have a list of references I can contact?
  • When are you able to start the job?

In most cases, the responses you get to these three questions will give you a very good idea of the right pro for your project. If you have more than one front-runner, these additional questions can help you narrow it down. 

  • How many years of experience do you have?
  • What’s your permanent business address?
  • Are you licensed to work in my area?
  • When did you earn your business license?
  • How do you handle warranty service complaints?
  • Do you have worker’s compensation, property damage and personal liability insurance?

Any good contractor will answer these questions, and most will appreciate dealing with a client that takes such an active interest in finding good service. On the other hand, if a contractor gives you a hard time with these questions, you probably want to find someone else.  

Related Projects in Los Angeles, CA

HomeAdvisor Community Rating

Overall Rating:

Los Angeles Addition & Remodeling Contractors are rated 4.8 out of 5 based on 1140 reviews of 1140 pros.

The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.


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Things to Consider Before You Build an Addition:

What best describes this project?

    What kind of addition do you want?

      Select the rooms included in this project:

      • Bathroom
      • Kitchen
      • Bedroom(s)
      • Garage/Workshop
      • Living/Family room
      • Laundry/Mud room
      • Deck/Porch
      • Basement
      • Office(s)
      • Common area(s)

      Do you provide these professional services?

      Find out how HomeAdvisor can help your business

      See Local Demand

      See Recent Leads

      Recent Job Requests for Addition & Remodeling Contractors in Los Angeles, CA

      • NewProject Location: Los Angeles, CA
        Date: 05/25/23
        Desired Completion Date: Less than 2 months
        Request Stage: Planning & Budgeting
        Type of Addition: Remodel existing space
        Requires Work on Historical Structure: No
        Request for Commercial Location: No
        Project Description: Build - Use existing architectural drawings
        Rooms Included:: Office(s)
        Comment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.
      • NewProject Location: Los Angeles, CA
        Date: 05/25/23
        Desired Completion Date: More than 2 months
        Request Stage: Planning & Budgeting
        Project Description: Design and build
        Comment: We have a 2 bed 1 bath and want to build 2 more rooms and 1 bath
      • NewProject Location: Los Angeles, CA
        Date: 05/25/23
        Desired Completion Date: Timing is flexible
        Request Stage: Planning & Budgeting
      • NewProject Location: Los Angeles, CA
        Date: 05/25/23
        Desired Completion Date: Timing is flexible
        Request Stage: Planning & Budgeting
        Project Description: Design and build
        Comment: New adu in backyard if single family dwelling. Ideally 3 bed 2 bath
      • NewProject Location: Los Angeles, CA
        Date: 05/24/23
        Desired Completion Date: Less than 2 months
        Request Stage: Planning & Budgeting
        Type of Addition: Ground level addition
        Requires Work on Historical Structure: No
        Request for Commercial Location: No
        Project Description: Design and build
        Rooms Included:: Bathroom
        Comment: Addition of a ground level bathroom to an existing bedroom. Home near LAX in Westchester off 495 Freeway
      • NewProject Location: Los Angeles, CA
        Date: 05/23/23
        Desired Completion Date: More than 2 months
        Request Stage: Planning & Budgeting
        Type of Addition: Ground level addition
        Requires Work on Historical Structure: No
        Request for Commercial Location: No
        Project Description: Build - Use existing architectural drawings
        Rooms Included:: Bedroom(s)
        Rooms Included:: Bathroom
        Comment: add extension to house to expand bedroom and add bathroom to a 3b/1b house
      • NewProject Location: Los Angeles, CA
        Date: 05/23/23
        Desired Completion Date: Timing is flexible
        Request Stage: Planning & Budgeting
        Type of Addition: Remodel existing space
        Requires Work on Historical Structure: Yes
        Request for Commercial Location: No
        Project Description: Design and build
        Rooms Included:: Kitchen
        Rooms Included:: Bedroom(s)
        Rooms Included:: Living/Family room
        Rooms Included:: Bathroom
        Rooms Included:: Deck/Porch
        Rooms Included:: Laundry/Mud room
        Comment: this home was my childhood home it was built in 1932. therefore needs a lot of work to reconstruct it.
      • NewProject Location: Los Angeles, CA
        Date: 05/22/23
        Desired Completion Date: Less than 2 months
        Request Stage: Ready to Hire
        Type of Addition: Ground level addition
        Requires Work on Historical Structure: No
        Request for Commercial Location: No
        Project Description: Design and build
        Rooms Included:: Kitchen
        Rooms Included:: Bedroom(s)
        Rooms Included:: Bathroom
        Comment: Build 720 square foot 2 bedroom 1 bathroom house on my property.
      • NewProject Location: Los Angeles, CA
        Date: 05/22/23
        Desired Completion Date: Timing is flexible
        Request Stage: Ready to Hire
        Project Description: Build - Use existing architectural drawings
        Comment: Bedroom addition of total 87 sq ft to an existing ADU. Plans approved and permit issued by LA CITY. Job ready to go.
      • NewProject Location: Los Angeles, CA
        Date: 05/22/23
        Desired Completion Date: Timing is flexible
        Request Stage: Planning & Budgeting
        Project Description: Build - Use existing architectural drawings
      • Project Location: Los Angeles, CA
        Date: 05/19/23
        Desired Completion Date: Timing is flexible
        Request Stage: Ready to Hire
        Project Description: Design and build
      • Project Location: Los Angeles, CA
        Date: 05/19/23
        Desired Completion Date: Less than 2 months
        Request Stage: Planning & Budgeting
        Type of Addition: Detached addition
        Requires Work on Historical Structure: No
        Request for Commercial Location: No
        Project Description: Design and build
        Rooms Included:: Basement
        Rooms Included:: Bedroom(s)
        Rooms Included:: Bathroom
        Rooms Included:: Deck/Porch
        Rooms Included:: Garage/Workshop
        Comment: stand alone ADU with a home addition
      • Project Location: Los Angeles, CA
        Date: 05/19/23
        Desired Completion Date: Timing is flexible
        Request Stage: Planning & Budgeting
        Project Description: Design and build
      • Project Location: Los Angeles, CA
        Date: 05/19/23
        Desired Completion Date: Timing is flexible
        Request Stage: Ready to Hire
        Project Description: Build - Use existing architectural drawings
        Comment: Four single family home in flat land 42000sq
      • Project Location: Los Angeles, CA
        Date: 05/17/23
        Desired Completion Date: Timing is flexible
        Request Stage: Ready to Hire
        Project Description: Design and build
      • Project Location: Los Angeles, CA
        Date: 05/16/23
        Desired Completion Date: Less than 2 months
        Request Stage: Planning & Budgeting
        Type of Addition: Detached addition
        Requires Work on Historical Structure: No
        Request for Commercial Location: No
        Project Description: Build - Use existing architectural drawings
        Rooms Included:: Kitchen
        Rooms Included:: Bedroom(s)
        Rooms Included:: Bathroom
        Comment: I would like to add a detached ADU
      • Project Location: Los Angeles, CA
        Date: 05/16/23
        Desired Completion Date: Timing is flexible
        Request Stage: Planning & Budgeting
      • Project Location: Los Angeles, CA
        Date: 05/14/23
        Desired Completion Date: Timing is flexible
        Request Stage: Planning & Budgeting
        Project Description: Design and build
        Comment: A three bedroom home with bathroom ,kitchen and living room
      • Project Location: Los Angeles, CA
        Date: 05/14/23
        Desired Completion Date: More than 2 months
        Request Stage: Ready to Hire
        Type of Addition: Ground level addition
        Requires Work on Historical Structure: No
        Request for Commercial Location: No
        Project Description: Build - Use existing architectural drawings
        Rooms Included:: Kitchen
        Rooms Included:: Bedroom(s)
        Rooms Included:: Living/Family room
        Rooms Included:: Bathroom
      • Project Location: Los Angeles, CA
        Date: 05/13/23
        Desired Completion Date: Timing is flexible
        Request Stage: Planning & Budgeting
        Requires Work on Historical Structure: No
        Request for Commercial Location: No
        Project Description: Design and build
        What type of second floor addition will this be?: Full addition

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