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ADUs (accessory dwelling units) in the City of San Diego

How much does an ADU cost in San Diego?

The City of San Diego permitted 1,711 ADUs in 2026 on 1,134 permits. The median single-ADU permit declared $120,900 (750 permits), conversions $89,600 and new detached ADUs $154,300. Median time from application to issue was 293 days, so plan for permits early.

Source: City of San Diego permit data (data.sandiego.gov), permits issued Jan 1–Oct 15, 2026. Last updated: . Methodology · Data

Full San Diego ADU guide: prices, permit timeline, what comes next, and free quotes →

1,711ADUs permitted 2026 (1,134 permits)
$120,900median single-ADU permit value
$89,600median conversion
$154,300median new detached
293 daysmedian application → issue

Cost by type

ADU type (City of SD, 2026)PermitsLow (25%)MedianHigh (75%)
Any single-ADU permit750$76,000$120,900$197,700
Conversion (garage, room, accessory building)307$59,600$89,600$144,400
New detached ADU293$102,900$154,300$198,800
Permits adding 2+ ADUs333$151,300$247,200$330,300

What follows an ADU on the same parcel

Next permitMedian gapParcels
Sewer / utility connection~38 days10
Electrical panel upgrade~68 days23
Fence~112 days10
Solar~115 days42

Licensed permit holders on 2026 ADU permits

BusinessCSLB #ClassesCityYrs2026 ADU permits
Ballow Construction Inc636290BSan Diego34.79
Waypoint Construction Corp1129343BSan Diego1.96
Gottsik Construction Inc1076032BSan Diego5.45
Lumina Builders Inc989988BSan Diego12.74
Masterworks Construction Company800242B|C-15|C-17La Jolla25.02
Kayros Construction Llc832045B|C-8San Diego22.72
Reuter Group Inc1106471BSan Diego3.32
Xlnc Builder Llc1153455BSan Diego0.52
Ruckle Construction Inc136199BSan Diego73.61
Ocean Pro Services859523B|C-33San Diego21.41
Jackson Design And Remodeling Inc880939BSan Diego20.21
Silva Custom Builders905491BSan Diego19.01
Renovation Realty Inc965506BSan Diego15.11
Burtek Energy Llc1019515A|B|C-10|C-20|C-46San Diego10.01
En Design And Build1068140B|C-27San Diego6.21
Kanna Construction Inc1067407A|BSan Diego6.21
Coast Remodeling Services1078174B|C-39San Diego5.31
Lusso Design And Build Inc1108702B|C-27|D28San Diego3.21

Data: City of San Diego permits issued Jan 1–Oct 15, 2026 (data.sandiego.gov); CSLB license master (San Diego County, Oct 16, 2026). Valuations are declared by applicants, not final invoices.

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