A new M/I Homes community about 10 minutes from downtown Austin, with serious value and no million-dollar price tag: two home collections from the $330,000s, a low tax rate, and a resort-style amenity center. Here is the honest local rundown, what it costs, and who it fits. 175+ closings since 2016.
Cascades at Onion Creek is a new-construction community in South Austin, built by M/I Homes, about 10 minutes from downtown. It offers two home collections from around $334,000 (resale from about $339,000), a resort-style amenity center, and something that really stands out for the area: a low tax rate around 1.8% with just a $55-a-month HOA. It is a genuine value play for a first-time buyer or a move-up buyer who wants new construction close to the city without a million-dollar price tag.
Come tour the M/I model home and the amenity center with me:
| Collection | Details |
|---|---|
| Capital Series | 7 plans, mostly single-story, 1,400 to 2,400 sq ft, 2 to 4 bedrooms, Energy Star certified. The value end of the community. |
| Smart Series | 6 larger layouts up to 2,778 sq ft, 3 to 5 bedrooms, flex spaces, and curated finishes, designed for comfort and energy efficiency. |
Homes range from around $334,000 up into the mid $500,000s depending on the collection, plan, and lot. Prices move with the market, so confirm current pricing for a specific home.
The estimated combined tax rate here is around 1.8%, which is genuinely competitive for the Austin area and well below the 2.5% to 2.7% you see in many new communities that carry a big MUD or PID. Pair that with a low $55 HOA, and your monthly carrying cost stays lean. Always confirm the certified rate for your specific lot, my MUD and PID guide shows how, but a sub-2% rate this close to downtown is a real edge.
Cascades is built by M/I Homes, which sits in the mid tier on my builder list, a solid, dependable builder I have worked with. The homes come with the finishes you want in this price range: quartz countertops, stainless appliances, large islands, walk-in pantries, and good storage. A great example is the Brahman, a two-story plan at 2,441 square feet with the primary suite on the first floor plus a room that works as an office, an open-concept living-dining-kitchen built for connection, and a private primary suite with a double vanity and oversized walk-in shower. Move-in-ready homes are available if you want to settle in fast.
The resort-style amenity center is a real part of the draw here:
Location is a big part of the value. You are about 10 minutes from downtown Austin, a 5-minute drive to Southpark Meadows for shopping and dining, and you can get on I-35 quickly. This is far-south Austin near Onion Creek, so you are close to the city but paying far less than you would inside the urban core. Confirm the school district and campus zoning for your specific lot, since assignments in this pocket can vary. For the wider picture, see my South Austin relocation guide and the South Austin new construction guide, and if you like this low-tax, near-downtown profile, compare it with Marble Creek Crossing.
M/I runs incentives here, like a rate buydown and closing-cost assistance through M/I Financial, which can save you real money up front. But the specifics change often and are tied to particular homes and timelines, so what matters is how a given incentive changes your actual monthly payment, not the flashiest number on the flyer. Reach out before you visit on your own and I will tell you what is current and run the payment scenarios for your budget. Contact me or call (512) 487-9242.

South Austin is home base for me, and new construction is most of what I do, with 175+ closings since 2016 across South Austin, Buda, Kyle, and Bastrop. I toured Cascades at Onion Creek firsthand, and I will help you pick the collection and floor plan that fit you, run the real payment scenarios including taxes and incentives, and stand in your corner at the model, which costs you nothing because the builder pays your agent.