Say you're cross-shopping two Cedar Park listings. Same price, give or take a few thousand dollars. Same square footage, same builder era, same general commute to 183A. One sits in Ranch at Brushy Creek. The other sits four miles away in Block House Creek. On paper, they look like the same purchase with a different address.
They aren't. Depending on which municipal utility district each parcel falls under, one of these buyers could be paying meaningfully more in property tax every year than the other, and the gap has nothing to do with the home itself. It comes from a layer of taxation that sits underneath the price tag and rarely shows up on a listing sheet: the municipal utility district, or MUD.
Cedar Park's median sale price hovered around the low $500,000s through early and mid-2026 depending on which data source you check. That number tells you what a typical buyer paid. It tells you almost nothing about what a typical buyer's annual tax bill actually looks like, because Cedar Park isn't one tax jurisdiction. It's a patchwork of city-limits parcels and multiple MUDs, each governed by its own board, each setting its own rate, and each at a different point in paying off the infrastructure debt that created it in the first place.
The City's Own Line Item Is Smaller Than You'd Guess
Most buyers assume the city of Cedar Park is the biggest driver of their tax bill. It isn't close. Cedar Park City Council adopted a property tax rate of $0.36 per $100 of value for fiscal year 2025-26 at its September 2025 meeting, a slight decrease from the prior year's $0.363, according to Community Impact's coverage of the vote. Despite that small cut, the average homeowner's bill still rose, because rising appraised values outpaced the rate reduction.
Here's the part that surprises most buyers: the city's own FY 2026 budget materials note that the municipal portion accounts for only about 18 percent of a typical property tax bill. The rest goes to the school district, the county, the community college district, and, for a large share of Cedar Park addresses, a MUD. If you're comparing two homes and only checking the city's rate, you're looking at less than a fifth of the picture.
The Real Variable Sits Downstream of the City
A MUD is a special taxing district created to finance water, sewer, and drainage infrastructure for a development, usually one built before city utility lines reached that far. The district issues bonds to cover construction costs, then levies its own property tax to pay those bonds down over time. That tax shows up as a separate line on the annual bill, alongside city, county, and school district charges.
Cedar Park has several of these districts layered across its subdivisions, and they don't all charge the same rate. A 2026 Cedar Park neighborhood guide from a Central Texas brokerage put it plainly: MUD charges in the area typically add somewhere between a quarter and half a percentage point on top of the base county rate, and that add-on doesn't always show up clearly when a listing sheet quotes an "estimated" tax figure. You have to go looking for it.
Age Doesn't Predict the Rate. The Bond Schedule Does.
Here's the piece that breaks the intuitive assumption. Most buyers figure an older, more established neighborhood has had more time to pay off its infrastructure debt, so it should carry the lower tax rate. Sometimes that's true. Sometimes it's the opposite.
Block House MUD, which contains the Block House Creek subdivision next to the H-E-B Center at Cedar Park, was created in 1982, making it one of the oldest municipal utility districts in the area. In 2019, its rate stood at $0.7810 per $100 of value, more than 33 cents above Cedar Park's city rate at the time. Williamson County tax data backed up what Williamson County Tax Assessor-Collector Larry Gaddes told Community Impact that year: age alone doesn't predict a lower MUD rate. By 2025, Block House's rate had come down to roughly $0.545 per $100 according to a title company's published Central Texas rate sheet, a real decline, but still one of the higher MUD rates in the Cedar Park-Leander corridor.
Compare that to the Ranch at Cypress Creek MUD, also one of the older districts in the area. Back in 2019 it charged just $0.3425 per $100, already below Cedar Park's own city rate that year. The district's own FAQ page confirms its debt service obligations are continuing to shrink as bonds retire, meaning that gap has likely widened rather than closed.
Two districts, roughly the same age, moving in opposite directions relative to the city rate. The difference comes down to how much debt each district issued at the start, how it was structured, and how close it is to retiring that debt, not how many decades have passed since it was formed.
| Taxing entity | Rate in 2019 | Rate more recently | What changed |
|---|---|---|---|
| City of Cedar Park | $0.4470 | $0.36 (FY2025-26, adopted Sept. 2025) | City rate down, but only about 18% of a typical total bill |
| Block House MUD (Block House Creek) | $0.7810 | roughly $0.545 (2025 rate sheet) | Down significantly, still elevated relative to most nearby districts |
| Ranch at Cypress Creek MUD | $0.3425 | Continuing to decline, per the district's own disclosure | Already below the city rate in 2019, gap likely wider now |
One ZIP Code, Two Effective Rates
Even without touching MUD boundaries, Cedar Park splits across two ZIP codes with different effective tax outcomes. Data from property tax firm Ownwell shows homeowners in the 78613 ZIP carrying a median effective rate of 1.52 percent as of 2026, while those in 78641 pay a median of 1.49 percent. A 0.03 percentage point spread sounds small until you apply it to a $500,000 home and realize it moves the bill by more than $100 a year before you've even accounted for which MUD, if any, sits on top of it. Ownwell also notes that the window to formally appeal an assessed value with the local appraisal district closes each year on May 15, a date worth marking on next year's calendar if you close on a home and suspect the appraisal ran high.
What This Looks Like on a Real Street
Ranch at Brushy Creek is a useful case study because its full effective rate, combining every layer, has been published year over year. It ran 2.3321 percent in 2021, dropped to 1.9718 percent by 2023, dipped slightly further to 1.9682 percent in 2024, then ticked back up to 1.9811 percent for the 2025 tax year. Rates in this neighborhood don't move in a straight line, and the direction can reverse from one year to the next depending on how local taxing bodies set their budgets.
The neighborhood also splits between two school districts depending on which section a home sits in, Leander ISD or Round Rock ISD, each with its own tax rate layered underneath. A few miles south, Anderson Mill West pulls Round Rock ISD exclusively rather than Leander ISD, another variable that changes the total bill even when the sale price looks identical to a home a short drive away.
How to Check Before You Write an Offer
None of this shows up reliably on a portal's estimated payment calculator. Before you get attached to a specific address, run through this:
- Pull the parcel record directly from the Williamson County Appraisal District using the property address, not the neighborhood name.
- Look for a line item labeled MUD, Municipal Utility District, or Water Control and Improvement District. If one exists, note the district name specifically.
- Ask the listing agent or seller for the actual prior year's tax bill, not a county estimate, since exemptions and assessed value adjustments can shift the real number.
- If a MUD is involved, check whether the district publishes its own rate history or debt schedule. Older districts especially can move in either direction depending on how much bonded debt remains.
- Confirm which school district serves the specific parcel, since some Cedar Park subdivisions split between two ISDs block by block.
A five minute parcel search can tell you more about your real monthly payment than a week of comparing list prices ever will.
A Few Questions Buyers Ask Us Directly
What exactly is a MUD, in plain terms? It's a special district, usually created before city utilities reached a development, that borrows money to build water and sewer infrastructure, then taxes property owners inside its boundary to repay that debt over time.
Will the MUD tax always show up separately on my bill, or is it folded into the city's rate? It appears as its own line, separate from city, county, and school district charges. If a home isn't in a MUD, that line simply won't exist on the bill.
Can a MUD rate go back up after it's been declining for years? Yes. A district can issue new bonds for additional infrastructure or repairs, which resets the debt service portion of its rate. Checking the district's current budget and any pending bond votes is worth doing before you assume a downward trend will continue.
Is there a way to know a MUD's rate before I even schedule a showing? The county appraisal district's online parcel search will usually show every taxing entity attached to an address, MUD included, before you ever set foot inside.
The number on the listing tells you what the seller wants for the house. The number on the tax bill tells you what it will actually cost you to keep it. In Cedar Park, those two numbers can tell very different stories depending on which side of an old MUD boundary the home happens to sit.
If you're comparing specific Cedar Park addresses and want a clear read on what each one actually costs to own, not just to buy, Maricruz Acuna and the Flying Home Group can walk the numbers with you before you write an offer. Schedule your smooth landing.