What Municipal Utility Districts are, which Austin-area 55+ communities have them, how much they cost, and how to verify before you close
A Municipal Utility District (MUD) is a special-purpose local government created to finance and operate infrastructure — water systems, sewer systems, drainage, and roads — in areas that are outside city limits and do not have access to city utilities. Texas developers frequently use MUDs to fund the infrastructure of master-planned communities, with the costs recovered through annual property taxes assessed on all homes within the district.
MUDs are common in the suburban growth corridors around Austin, San Antonio, and Houston. Many 55+ communities in the Austin-San Antonio corridor — particularly those in western Travis County, southern Williamson County, and Hays County — sit within MUDs. The annual MUD tax is separate from regular county, city, and school taxes and is in addition to regular property taxes.
MUD tax rates vary by district and year. Typical rates in the Austin-area suburban corridors run approximately $0.15–$0.35 per $100 of assessed value. On a $500,000 home, this adds:
| MUD Rate | Annual Tax on $500K Home | Monthly Equivalent |
|---|---|---|
| $0.15/$100 (lower MUD) | $750/yr | $63/mo |
| $0.25/$100 (moderate MUD) | $1,250/yr | $104/mo |
| $0.35/$100 (higher MUD) | $1,750/yr | $146/mo |
| $0.60/$100 (Rough Hollow area) | $3,000/yr | $250/mo |
The Rough Hollow / Lakeway / Trilogy area MUD rates are among the highest in the Austin metro, running approximately $0.55–$0.65/$100 on some parcels. On a $900,000 Rough Hollow home, this adds approximately $4,950–$5,850/year in MUD taxes — over $400/month in additional recurring cost that does not appear in HOA fee comparisons.
| Community | MUD Tax Status | Estimated Rate |
|---|---|---|
| Sun City Texas (Georgetown) | Generally no MUD | N/A |
| Kissing Tree (San Marcos) | Some parcels — verify | ~$0.20–$0.30/$100 on affected parcels |
| Trilogy at Rough Hollow | Yes — Rough Hollow MUD | ~$0.55–$0.65/$100 (adds $2,800–$3,500/yr on $500K) |
| Amante at Rough Hollow | Yes — same Rough Hollow MUD | ~$0.55–$0.65/$100 |
| Del Webb Sweetwater | Verify — western Travis Co. has MUDs | ~$0.20–$0.40/$100 on affected parcels |
| Villas at Kissing Tree | Possible — Hays County verify | ~$0.20–$0.30/$100 if applicable |
Sun City Texas in Georgetown is the largest 55+ community in the market and generally does not sit within a MUD — one of its financial advantages that is rarely highlighted in comparison with the newer communities.
We can help you identify and verify MUD status for any 55+ community in the Austin-San Antonio corridor.
Talk to a Specialist