Accessory dwelling units adus — San Antonio, TX
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
Accessory dwelling units, or ADUs, are secondary residences that share a lot with a main house. These units allow you to increase your property value and utility without buying a new home. You need these when your household needs are changing and you need more flexible living space.
Frequently asked in San Antonio
What's involved in building an accessory dwelling unit in San Antonio?
What factors influence the cost of an accessory dwelling unit in San Antonio?
How do I get a quote for an ADU in San Antonio?
What is an accessory dwelling unit?
An accessory dwelling unit, or ADU, is a secondary housing unit on a single-family residential lot. It's a separate living space with its own entrance, kitchen, and bathroom. Think of it as a smaller, independent home within your property's boundaries. These can be attached to the main house or built as a detached structure, like a backyard cottage.
Can I build an ADU on my property in San Antonio?
Who are the local ADU experts in San Antonio?
What are homes with in-law suites like in San Antonio?
Also serving nearby: New Braunfels · Austin · Round Rock · Georgetown · Killeen
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
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: Downtown, The Pearl District, Alamo Heights, Terrell Hills, King William Historic District — and every surrounding area.
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