Design. Permits. Build.

San Diego ADU Builder For Backyard Homes That Feel Like Home

We are San Diego ADU builders helping homeowners turn underused lots, garages, and backyards into beautiful, code-compliant homes with clear timelines and transparent pricing.

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120+ADUs Delivered
18-24Weeks Typical Build
4.9/5Client Rating

San Diego ADU Services

Detached ADUs

Standalone backyard homes designed for rental income, family living, or flexible work-life space.

Garage Conversions

Convert existing garages into efficient, comfortable, permit-ready living units without wasted square footage.

Attached ADUs

Smart expansions that integrate with your current home while preserving curb appeal and neighborhood character.

Looking for San Diego ADU builders for a granny flat, backyard cottage, or garage conversion? Our team handles design, permitting, and construction under one roof.

Our 4-step process

Site + Feasibility

We assess zoning, lot constraints, setbacks, and utility access so you know what is possible from day one.
Design + Engineering

Plans are developed around your goals, then coordinated with structural and MEP engineering.
Permits + Approvals

Our team handles submittals and city comments to keep your project moving without paperwork headaches.
Construction + Handover

Dedicated project management, quality control, and final walkthrough before keys are delivered.

San Diego ADUs

A dedicated, source-linked page with current San Diego ADU and JADU regulations, permitting pathways, update tracking, and key city decision-maker references.

Current Rules

Clear summaries of ADU and JADU size, parking, setback, and permit requirements based on City and State sources.

Policy Watch

Follow proposed Land Development Code changes, City Council hearings, and regulatory updates in one place.

Official Links

Direct links to Municipal Code sections, Development Services ADU resources, and the latest California HCD handbook.

Open San Diego ADUs Detail Page

Before And After Transformations

Tap a project to see full photos and details.

Garage To Income Suite

Converted garage into a high-demand 1 bed ADU.

Side-Yard Infill Upgrade

Dead space transformed into a modern rental-ready home.

Backyard Cottage Refresh

Dated structure rebuilt into a polished family cottage.

Quick ADU estimator

Data-informed planning range based on 2026 San Diego market assumptions. Final pricing depends on plans, soils, utility routes, and permit review.

Approximate size (sq ft) Project type Finish level Site complexity Utility upgrade risk Bathrooms

Includes: construction, design/engineering/permits, sitework, utility allowance, and contingency. Excludes land value and financing costs.

Start your project

Tell us what you are planning and we will follow up within one business day.

hello@sandiegoadubuilder.com

San Diego ADU Builder FAQs

How much does it cost to build an ADU in San Diego?

Cost depends on size, type, site access, and utility work. Use our estimator for a planning range, then request a tailored feasibility review.

How long does an ADU project take in San Diego?

A typical timeline is design and permits first, then construction. Most projects are completed in phases over several months depending on city review and complexity.

What types of ADUs do your San Diego ADU builders handle?

We build detached ADUs, garage conversions, and attached ADUs for rental income, multigenerational living, and flexible home-office use.