How Much Does Room Addition Cost in San Diego, CA?
Average room addition costs in San Diego range from $11,779 to $15,937. Get a free, customized estimate below.
Room Addition Cost Breakdown — San Diego, CA
| Item | Unit | Qty | Unit Price | Total |
|---|---|---|---|---|
| Foundation | sq ft | 200 | $19.50 | $3900.00 |
| Framing | sq ft | 200 | $15.60 | $3120.00 |
| Roofing | sq ft | 220 | $10.40 | $2288.00 |
| Electrical & Plumbing | lump sum | 1 | $4550.00 | $4550.00 |
| Estimated Total | $13,858.00 | |||
* Prices are estimates based on San Diego market rates. Actual costs may vary based on project specifics.
Estimate
Ref ID: EST-2026-0WBA
Date Issued
May 6, 2026
Client
Project Details
Site Address
Start Date
End Date
Scope of Work
Materials
| Material Specification | Units | Amount | Ext. Total | |
|---|---|---|---|---|
$ | $3,900 | |||
$ | $3,120 | |||
$ | $2,288 | |||
$ | $4,550 |
Labor
| Service Specification | Type | Hrs | Rate | Ext. Total | |
|---|---|---|---|---|---|
Craftsmanship Guarantee | $ | $600 |
Contractual Agreements & Conditions
Total
$14,458
Draft
Frequently Asked Questions — Room Addition in San Diego
How much does room addition cost in San Diego, CA?
The average cost for room addition in San Diego, CA ranges from $11,779 to $15,937, depending on project scope, materials, and labor rates. San Diego costs are above the national average due to higher labor and material costs in the region.
How do I get a free room addition estimate in San Diego?
Use Brixor's free online estimate generator above. Enter your project details, customize line items for your specific needs, and download a professional PDF estimate instantly. No signup or credit card required.
What factors affect room addition costs in San Diego?
Key factors include project size and complexity, material quality, labor rates in San Diego (CA), permit requirements, accessibility of the work area, and seasonal demand. Getting multiple estimates is recommended.