Home Addition Cost in San Diego, California ()
Home addition cost in San Diego, California ranges from $137 to $275 per square foot. Standard grade construction is represented by the lower end of this range and premium grade construction is represented by the upper end of this range. Luxury grade construction could be as much as twice the cost of the upper end of this range. To get a more accurate cost for your home addition project, request a quote. Please note that if you use our matching service, we may be compensated.
Topics Covered in this Guide: Home Addition Cost | Home Addition Cost Factors | Frequently Asked Questions | Related Cost Guides | Find Home Addition Contractors | Home Addition Cost in Your Area
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How Much Does Home Addition Cost in San Diego, CA?
Home addition cost in San Diego, California ranges from $137 to $275 per square foot. Standard grade construction is represented by the lower end of this range and premium grade construction is represented by the upper end of this range. Luxury grade construction could be as much as twice the cost of the upper end of this range. Consult with a contractor to discuss the pros and cons of different construction grades.
This guide is intended to provide you an approximate home addition cost in San Diego, CA. To get a more accurate quote for your specific project, request a free estimate. Our research, although general in nature, does include feedback provided by home addition contractors and research conducted by the HomeBlue staff.
Home addition cost based on the size of the addition:
- 12x12 addition cost (144-sf): $20,000 to $40,000.
- 20x20 addition cost (400-sf): $55,000 to $110,000.
- 20x30 addition cost (600-sf): $82,000 to $165,000.
- 20x40 addition cost (800-sf): $110,000 to $220,000.
- 25x40 addition cost (1,000-sf): $137,000 to $275,000.
- Note: The lower end of these ranges represents standard grade construction and the upper end represents premium grade.
- Note: Luxury grade construction in high cost areas could be as much as double the upper end of these ranges.
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Factors that Influence House Addition Cost in San Diego
When addition contractors come to your house to provide you an estimate, they will consider a number of factors that can increase or decrease the cost of your project. Pricing for your home addition project will vary based on the quality of construction you choose, the size of your addition, and the topography of the site. Here are a few things to keep in mind when you get quotes from house addition contractors:
Your prices may be higher when:
- You want premium or luxury grade construction.
- The addition requires a foundation.
- The property is historic and requires special approvals.
- The house is occupied.
- A basement needs to be dug.
- The site has a significant slope or is rocky.
- The property is in a hard to reach location (more travel time).
- The property is in a high cost area.
Your prices may be lower when:
- You want standard grade construction.
- No foundation is required.
- The house is vacant.
- The addition does not have a basement (it is constructed on-grade).
- The property is easily accessible (less travel time).
- The property is in a lower cost.
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Home Addition FAQs
Here are a few frequently asked questions related to home addition construction:
You can find home addition contractors in San Diego by 1) asking a neighbor for a referral, 2) searching for “home addition contractors” in your favorite search engine, 3) using a traditional paper directory resource (yellow pages), 4) looking for ads on your local TV station, 5) using an online matching service.
In general, hiring an architect or designer to prepare construction documents is likely necessary. The structural elements of the building will need to be designed and stamped by a licensed structural engineer. If you need to do foundation work, you may also need a civil engineer to make sure the site is properly graded. You can ask your builder if they could assist you with the design process (ie: do the project using a design/build approach) or whether they would prefer you hire an architect separately to prepare drawings. Either way, the final design documents will then need to be submitted to your local permit office for approval.
Building a home or an addition requires a contractor’s license in most localities. However, many localities provide exemptions when property owners choose to serve as the general contractor for a property that they own. You will need to research your local laws. For instance, here is a link to a Florida statute addressing owner-builder exemptions. There are pros and cons relating to serving as an owner-builder. For instance, you will assume many of the responsibilities and liabilities associated with the project.
It is highly likely that you will need a building permit to build a home addition. Discuss the permit process with the contractors you are considering for the project. A seasoned and reputable contractor should be comfortable and willing to help guide you through the process or willing to handle the task as part of their contract.
20x20 room addition cost in San Diego ranges from $55,000 to $110,000 depending on the grade of construction used. Standard grade will be at the lower end of this range and Premium grade will be at the upper end of this range. To get a more accurate cost for your specific project, request a quote from a local contractor.
12x12 room addition cost in San Diego ranges from $20,000 to $40,000 depending on the grade of construction used (standard is at the bottom end of this range and premium grade is at the top end of this range). To get a more accurate cost for your room addition project, request a quote from a local contractor.
The cost to add a second story in San Diego ranges from $137 to $275 per square foot depending on the grade of construction used (standard is at the lower end of this range and premium grade is at the upper end of this range). To get a more accurate cost, request a quote from a local contractor.
Related Cost Guides
We have researched several other closely related projects. If one of these projects better represents the type of project you are undertaking, please check out the appropriate guide:
- Building a new house? Home Building Cost Guide for San Diego, CA
- Building a barndominium? Barndominium Cost Guide for San Diego, CA
- Remodeling a bathroom? Bathroom Remodeling Cost Guide for San Diego, CA
- Remodeling a kitchen? Kitchen Remodeling Cost Guide for San Diego, CA
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Local Home Addition Contractors Near San Diego, CA
The following are a few contractors in your area. Note that these companies have not been screened or vetted by HomeBlue. Please conduct proper due diligence prior to hiring these or any other company you may select.
Modern Home Remodeling We are a premier home remodeling company that works with homeowners in the San Diego to upgrade their home with modern designs and modern remodeling solutions. Our work as general contractors takes care of everything from the design and concept stage through every detail of the construction process. We are here to help ensure you complete the remodeling project you have dreamed of without any stress and within your budget.
Lars Remodeling & Kitchen Design of San Diego Lars Remodeling & Design builds personalized homes that come to life, with the Lars experience. Our collaborative team of architects, interior designers, project managers, and construction professionals work with you hand and hand every step of the way. Started in 1991, Lars Remodeling & Design is celebrating over 30 years of home remodeling in San Diego. Lars is an award-winning home Remodeling & Design company that specializes in home renovation projects of all sizes.
Forever Builders Inc When you’re looking for the best home remodeling company in San Diego, you want to find one that does exceptional work and values your satisfaction above all else—and that’s precisely what you’ll get when you choose Forever Builders. As a family-owned and operated company, we understand how important your home is to your family, which is why we work hard every day to provide the highest level of service in the home remodeling industry. When you partner with us, you become part of our extended family, and you can rest easy knowing you’re working with experienced, dedicated professionals who put your needs first.
Optimal Home Remodeling & Design Optimal Home Remodeling and Design is a well-established home remodeling company in the San Diego area, design and build custom home as well as specializes in bathrooms and kitchens remodeling as well as Full home remodeling. Optimal Home Remodeling and Design has earned its reputation by completing high-end projects and a wide range of beautiful portfolios. We believe that a successful project can be achieved when the customer budget, time, and goals are maximized without compromising on quality and service.
Home Addition Cost Estimates
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Find Home Addition Cost in Your Area
House addition cost varies from area to area. We have developed a number of home addition cost guides to help you identify the room addition cost near you.
- How to Get Home Addition Price Quotes
- How to Get Matched to Home Addition Contractors
- Search for Home Addition Cost in Your City
- Home Addition Cost Guide (National Averages)
- Home Addition Cost in San Francisco, CA