ADU Builders Del Mar
The Del Mar ADU Guide
Del Mar, CA, USA
You’ve found the ultimate resource for building an accessory dwelling unit in Del Mar, California. As experienced Del Mar ADU builders, we help homeowners and investors understand ADU opportunities available throughout the city.
Read on to learn about local ADU regulations, permitting requirements, rental rates, and to explore completed and active ADU projects throughout Del Mar. You can also browse floor plans and homeowner stories for inspiration.
Del Mar ADU QUICK FACTS
What you can build
Maximum size: 1,000 square feet
Side/rear setbacks: 4 feet
Two story: Yes, in some situations
Permitting
-
Standard Timeline: 3-4 months
-
Coastal Timeline: TBD
Permit Costs: $8-12/sqft
What We've Learned Building ADUs in Del Mar
One of the most important things homeowners should understand about building an ADU in Del Mar is that not all properties with a Del Mar mailing address fall under the City’s jurisdiction. Some properties are actually regulated by the City of San Diego, which can significantly impact the rules on a property.
Del Mar limits detached ADUs to a maximum of 1,000 square feet and requires a 10′ separation between the primary residence and detached ADU. These requirements can influence site planning, particularly on smaller lots.
The city has previously offered both an ADU Incentive Program, which provides benefits to homeowners who dedicate ADUs as affordable housing, and an ADU Amnesty Program designed to help legalize unpermitted dwelling units. Program details and availability may change over time, so homeowners interested in participating should verify current program status with the city. Learn more on Del Mar’s ADU Page.
Del Mar ADU Permitting
Most ADU permits in Del Mar are approved within approximately 3 to 4 months after submission, although timelines can vary depending on project complexity and coastal review requirements. Del Mar accepts digital permit submissions, helping streamline the application process. Permit costs generally range from approximately $8-12/sqft depending on project size and scope.
One unique requirement is that applicants must provide certification confirming the ADU complies with approved height, setback, and square footage requirements prior to framing inspection. Homeowners should also anticipate stormwater management requirements, which often involve site drainage efforts such as gutters, grading, bio-retention drainage basins, or other mitigation measures.
Most Del Mar properties are located within the Coastal Zone and may require Coastal Development Permit review. Some ADUs may qualify for exemptions under the City’s Local Coastal Program.
How much will an ADU rent for in Del Mar?
Below are median rental prices by zip code and bedroom count. Be sure to run comps for your specific area or check with a realtor.
RENT RATES IN DEL MAR
| Zip | City | Neighborhood | 1BR | 2BR | 3BR |
| 92014 | Del Mar | Del Mar | 2430 | 3365 | 5200 |
Source: Rentometer March 2026
Search ADU Plans
Size of unit:
Beds:
Baths:
Stories:
ADU Builders Del Mar
Full Accountability. ADU Expertise. Proven Results.
Our own team is responsible for delivering on our promises, from the first time you contact us to the time we hand you the keys to your new ADU home.
As experienced ADU builders, we will anticipate the pitfalls that less seasoned or less integrated teams will miss. And the volume of ADU jobs we handle means we have gained an incredible amount of expertise that we are excited to bring to your project.
We’re 100% focused on being the best ADU builders in Del Mar and Greater San Diego.
We decided to build an ADU for my mom. I was very overwhelmed. Then I found out about SnapADU through a neighbor. I think it’s great to have a company that does the whole process from start to finish. It takes out the stress that comes with construction.
We found a plan that worked and then made little changes to make it exactly what we wanted, like adding windows to keep it bright and a pantry for extra storage. SnapADU let us ask a million questions, and they were open to every change or priority we had for the build.
SnapADU was so professional and friendly. We didn’t really have any challenges that arose during the project. They were totally easy to work with. I trusted them 100%.
Zip Codes: 92014
Neighborhoods: Del Mar, Del Mar Heights
Frequently Asked Questions
How is building an ADU in Del Mar different from other cities?
Del Mar’s permitting process is shaped by its coastal location. Most properties are located within the Coastal Zone, many projects require Coastal Development Permits, and stormwater mitigation is often required. Another important consideration is that some homes with a Del Mar mailing address are actually regulated by the City of San Diego rather than the City of Del Mar. SnapADU can help you determine what permitting jurisdiction you fall under.
How much does it cost to build an ADU in Del Mar?
Generally, detached new construction ADUs in Del Mar range from approximately $300-450K+ depending on size, site conditions, and level of customization. Learn more about ADU Costs.
Does Del Mar require stormwater mitigation for ADUs?
Yes, Del Mar generally requires site drainage and stormwater mitigation for ADU projects. This may include improvements such as gutters, grading, bio-retention drainage basins, or other mitigation measures.
Does SnapADU build custom ADUs in Del Mar?
Yes! SnapADU builds custom, semi-custom, standard, and pre-approved detached ADUs throughout Del Mar.