Detached accessory dwelling unit

Looking for detached accessory dwelling unit in San Antonio, TX? Call AccessoryDwellingUnit Experts for a contact a provider — no obligation. Licensed adu builders serve San Antonio and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.

About this service

A detached ADU is a standalone building separate from your main home, like a backyard cottage. These provide the most privacy for you or your tenants since there are no shared walls. You need this if you have a large enough yard to accommodate a separate structure.

Frequently asked in San Antonio

What's involved in getting an accessory dwelling unit permit in San Antonio?

How do I find a reliable ADU company in San Antonio?

What services do ADU experts offer in San Antonio?

ADU experts in San Antonio offer comprehensive services for building detached accessory dwelling units. This includes initial design consultations, navigating permit processes, and managing the entire construction phase. They assess your property's suitability, discuss material options, and oversee all building stages. Their goal is to deliver a functional and compliant ADU tailored to your needs. They also provide guidance on financing options.

What are the financing options for an accessory dwelling unit in San Antonio?

Financing options for an accessory dwelling unit in San Antonio can include home equity loans, personal loans, or construction loans. The pros can discuss these possibilities with you during your consultation. They can help you understand how these loans might apply to your specific project. They'll outline the potential costs involved. This allows you to make informed financial decisions for your ADU investment.

What makes an ADU the 'best' choice for a San Antonio homeowner?

What does 'accessory dwelling unit' actually mean?

An accessory dwelling unit, or ADU, is a secondary housing unit on a single-family residential lot. It's a self-contained living space with its own kitchen, bathroom, and sleeping area. ADUs can be attached to the main home or be a detached structure. They provide independent living quarters. In San Antonio, they're a great way to add value and utility to your property.

What is the typical construction process for an ADU in San Antonio?

Also serving nearby: New Braunfels · Austin · Round Rock · Georgetown · Killeen

All cities in Texas →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

1,495,295residents

2,997per sq mile

8ZIP codes served

Serving all of San Antonio — population 1,495,295; about 2,997 residents per square mile across 498.9 sq mi. ZIP codes covered include 78201, 78202, 78203, 78204, 78205, 78206, 78207, 78208.

Neighborhoods served in San Antonio: The Pearl District, Alamo Heights, King William Historic District, Monte Vista, Terrell Hills — and every surrounding area.