TradeCalcs · ADU

San Diego ADU Cost – Rough Ballpark

Quick, all-in budget range for a new ADU in San Diego County. Not a quote – a smart starting point for feasibility.

Detached, attached and over-garage ADUs

Permits · Site · Utilities · Build

San Diego ADU rules in mind

Location and configuration

Property city

ADU configuration

Single-story detached

Two-story / stacked

Over-garage ADU

Attached / JADU

Size and layout

Planned ADU size (sq ft)

Bedrooms

Who is this for?

Timeline

Tell us about the property

This tool gives an educational rough budget range only, based on typical all-in ADU costs in San Diego County (design, permits, site work, utilities, construction). Actual pricing requires a full feasibility review.

Data-backed ranges based on real ADU projects.

Rough range and feasibility call

We will show a planning range and log your ADU in FaresSystem so we can follow up with a more precise feasibility snapshot.

ADU planning range

Your details

Full name *

Mobile number *

Email (optional)

Property address (optional but helpful)

How should we reach you?

By submitting, you consent to TradeCalcs reviewing this info to plan your ADU project and contact you. We do not sell your personal contact details. Anonymous project data may be used to improve internal pricing models and tools. This planning tool is not a contract.

San Diego, CA homeowner?

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Cali Dream Construction (CSLB #1054602) builds ADUs and granny flats across San Diego County. Free in-home consultation.

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Disclosure: TradeCalcs and Cali Dream Construction are owned by the same operator (Azin LLC). Not affiliated with any other contractor.

San Diego ADU Cost – Rough Ballpark

Rough range and feasibility call

Get a real ADU quote from a licensed San Diego contractor.

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