ADUs and Extra Units in Austin: The Basics
Austin has updated its land development rules in recent years, including changes often called the HOME initiative, to allow more housing on many residential lots. That opens up options for homeowners.
What changed
The changes allow up to three units on many lots that used to allow only one or two, and they reduced minimum lot sizes in many areas. The specific rules depend on your lot and zoning.
Why it matters
- A backyard cottage or second unit can bring in rental income
- Space for a parent, a guest, or an office
- More options for building on a large lot
Things to check
- Your zoning and lot size
- Deed restrictions and HOA rules, which can be stricter than city rules
- Utility capacity and easements
- Trees, since Austin protects many large trees
- Permits and design requirements
Talk to professionals
An architect, builder, or land use professional can tell you what is possible on your specific lot.
Buying with this in mind
If adding a unit matters to you, I can help you look for lots with the right size and shape.
This is a big change for Austin, and it is worth understanding before you buy or build.
This article is general information, not legal, tax, or financial advice, and is not an appraisal or a guarantee of value. Market figures come from Unlock MLS and are deemed reliable but not guaranteed. Rules and programs change, so confirm details with the right professional.