How much do addition contractors typically cost?
- San Diego, California Average$88,581
- Typical Range$42,779 - $136,828
- Low End - High End$21,000 - $298,000
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Service Pros
San Jose, CA·
Kitchen Remodels, Major Renovations , ADU , Design service, roof , and 2 more
"After they redid our counter tops and island, we had them paint out cabinets and build shelves up to the ceiling. The communication was on point this time and the results speak for themselves. Would definitely recommend them to anyone for any home project."
579B05ED6C49D67A382683F5EBB77926035FDC4FE13C89D2670E2EA034DA6B6C 1. in December 2025
Del Mar, CA·
Addition to Existing Structure - Build
"I like Leo, he is very careful to answer questions and articulate. He works though problems with the owner. I found that to be very important."
Tom D. in September 2018
HP
Monrovia, CA·
MH
West Hills, CA·
Concrete, Painting, Roofing , and 1 more
"We hired McCormick for a bathroom remodel, and the whole process was smooth and professional. Khaled helped us make smart choices on design and materials that worked for both our budget and style. Now, our bathroom feels like a spa every time we step in. I appreciate the quality and attention to detail. These folks definitely know what they?re doing!"
Jackson M J. in December 2024
MS
In business since 2002
Los Angeles, CA·
Electrical signs, New and reparation signs, New and reparation of parking lot and commerical building lighting , and 1 more
About us: "With over 10 years of experience in the electrical industry, we are the experts you need to take care of your business. We handle everything from electrical to LED lighting. We will treat your business as we would treat our own. Give MP Sign Services, a call today, we look forward to working with you!"
DS
In business since 2012
Chula Vista, CA·
About us: "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.""
In business since 2022
Carlsbad, CA·
Landscapes, Accessory Dwelling Units (ADU), Outdoor Living Spaces , and 2 more
About us: "Passion Builders is veteran owned and San Diego based premier General Contractor. We are focused on residential and commercial projects with our services including: exterior landscapes, hardscapes, home additions, accessory dwelling units (ADUs), and custom home builds. Our crew and extensive network of architects, engineers, and specialty contractors is what allows us to execute, but our commitment to quality craftsmanship and customer service is what sets us apart."
RC
In business since 2019
San Diego, CA·
Additions and Remodels
About us: "RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!"
In business since 1990
La Mesa, CA·
Outdoor Living, patios, decks, Design and Engineering, Whole house remodeling , and 7 more
About us: "Sterling Design and Remodeling does additions, upgrades and complete rebuilds of homes throughout the greater San Diego area. As your trusted partner from concept and design to final finish, Sterling maximizes the return on your investment while minimizing the disruption to your life. Sterling guarantees quality craftsmanship and engineering, professional end-to-end project management, as well as custom design to suit your preferred style, budget and goals. Highly customized service and outcomes to meet your needs Sterling?s founder, Ken Manchego,provides personalized oversight and attention to every Sterling project. He brings the benefit of more than 27 years of experience in design and remodeling along with an equally talented team of architects, engineers, and builders who collaborate seamlessly."
Showing 10-18 of 19 results
Costs for related projects in San Diego, CA
- Build a Barn, Shed or Playhouse$3,487 - $6,200
- Build an Addition$42,779 - $136,828
- Demo an Interior$2,750 - $11,250
- Perform Home Renovations and Repairs$8,866 - $44,000
- Remodel or Renovate a House$29,871 - $115,927
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 San Diego, CA
HomeAdvisor Community Rating
Overall Rating:
San Diego Addition & Remodeling Contractors are rated 4.8 out of 5 based on 238 reviews of 238 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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Recent Job Requests for Addition & Remodeling Contractors in San Diego, CA
Project Location: San Diego, CA Date: 02/03/24Type of Addition: Second story additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: Looking to add an addition above the garage - no plumbing, just bedroomsProject Location: San Diego, CA Date: 02/02/24Desired Completion Date: Less than 2 monthsRequest Stage: Planning & BudgetingRequires Work on Historical Structure: NoRequest for Commercial Location: NoProject Description: Design and buildWhat type of second floor addition will this be?: Addition above a garageRooms Included:: KitchenRooms Included:: Bedroom(s)Rooms Included:: Living/Family roomRooms Included:: Office(s)Rooms Included:: BathroomRooms Included:: Garage/WorkshopRooms Included:: Laundry/Mud roomComment: We currently have a 1400 square foot house, and we're looking to double it by adding on a second story and a 1 bedroom ADU above our garage. We have funding approved, but need to start on planning and design. Hoping to have it built by February 2025.Project Location: San Diego, CA Date: 02/02/24Type of Addition: Second story additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Living/family roomWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: We are looking to add on to our existing home. We would like to add more bedroom/living space to our second story. There could be space above our garage that we are thinking we could utilize to add more bedroom space and potentially reconfigure some of the living space.Project Location: San Diego, CA Date: 02/01/24Desired Completion Date: Timing is flexibleRequest Stage: Ready to HireRequires Work on Historical Structure: NoRequest for Commercial Location: NoProject Description: Build - Use existing architectural drawingsRooms Included:: KitchenRooms Included:: Bedroom(s)Rooms Included:: Living/Family roomRooms Included:: BathroomWhat type of guest house/casita addition will this be?: Detached additionComment: Looking for a contractor to construct a 342 SF Guest Quarters. I have an architect and a plan set.Project Location: San Diego, CA Date: 01/31/24Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: OtherProject Location: San Diego, CA Date: 01/29/24Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: KitchenWhat types of rooms/spaces are you interested in adding to your home?: Living/family roomWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: Converting a 3 door attached garage to a one bed room ADU with all the living amenities.Project Location: San Diego, CA Date: 01/25/24Type of Addition: Second story additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: 2 BR, 1 BATH, SMALL KITCHEN/SINK AND BALCONY OVER 18X20 GARAGE. SHINGLE ROOFING. WOULD LIKE TO DEAL WITH ADU KNOWLEDGABLE CONTRACTORS.Project Location: San Diego, CA Date: 01/24/24What best describes this home addition project?: Build from existing designsWhat kind of addition do you want?: Second story additionWhat best describes this project?: Addition to homeWhat room(s)/space(s) are you interested in adding to your home?: Bathroom(s)What room(s)/space(s) are you interested in adding to your home?: Bedroom(s)What room(s)/space(s) are you interested in adding to your home?: KitchenComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: San Diego, CA Date: 01/24/24Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: San Diego, CA Date: 01/22/24Desired Completion Date: Less than 2 monthsRequest Stage: Planning & BudgetingProject Description: Design and buildComment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: San Diego, CA Date: 01/19/24Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: Add a jacuzzi and 2-3 twins.Project Location: San Diego, CA Date: 01/18/24What best describes this home addition project?: Design and buildWhat kind of addition do you want?: Second story additionWhat best describes this project?: Addition to homeWhat room(s)/space(s) are you interested in adding to your home?: Bathroom(s)What room(s)/space(s) are you interested in adding to your home?: Bedroom(s)Comment: We have a ranch and would like to build up and add a second story to account for our growing family. Ideally 2-3 more bedrooms and at 1-2 more bathrooms.Project Location: San Diego, CA Date: 01/17/24Type of Addition: Detached additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: KitchenWhat types of rooms/spaces are you interested in adding to your home?: Living/family roomWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: Want to investigate adding an ADU to our property along Cuca StreetProject Location: San Diego, CA Date: 01/16/24Project Description: Build - use existing architectural drawingsWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)Type of Addition: Ground level additionWhat types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: Customer did not provide additional comments. Please contact the customer to discuss the details of this project.Project Location: San Diego, CA Date: 01/14/24Type of Addition: Ground level additionProject Description: Design and buildWhat types of rooms/spaces are you interested in adding to your home?: Bathroom(s)What types of rooms/spaces are you interested in adding to your home?: Bedroom(s)Comment: currently it’s a standard 2/1 with 1000 sqft in San Diego. Small garage on the right. We want to delete the garage, extend the house the 10ft along the entire length, add a side load garage in the front, and also extend the front towards the road since set back rules have changed. Wanting a 4/2+ when it’s all said and done.
