Accessory dwelling unit builders

Looking for accessory dwelling unit builders 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

These are the professionals who manage the entire build, coordinating everything from structural framing to final electrical and plumbing inspections. You need a dedicated builder when you want a team to handle the complexities of construction so you don't have to manage multiple subcontractors yourself. We ensure that every phase of the project meets safety standards and quality expectations. Exact pricing confirmed free on the call.

Frequently asked in San Antonio

What are the local ADU rules in San Antonio?

What does 'accessory dwelling unit' actually mean?

An accessory dwelling unit, or ADU, is a secondary housing unit on a single-family home lot. Think of it as a smaller, independent living space. It can be attached to the main home or a separate structure in the backyard. ADUs are designed for a variety of uses, from housing family members to generating rental income. They offer a flexible housing solution.

How does an ADU company work in San Antonio?

What's involved in building an ADU?

Building an ADU involves several stages, starting with design and securing permits. Then, site preparation begins, followed by foundation work. The structure is then erected, including framing, roofing, and installing utilities. Interior finishing, like drywall, flooring, and fixtures, comes next. Finally, inspections confirm everything meets code before you can use it.

What affects the cost of an ADU in San Antonio?

Can I build a mother-in-law suite on my property?

What is the permit cost for an ADU in San Antonio?

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

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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, King William Historic District, Alamo Heights, Olmos Park, Monte Vista — and every surrounding area.