Buying a Home in Sienna Hills: A Buyer's Guide
Buying in Sienna Hills: Washington City's largest new master-planned community — and why which village you buy in decides what you may do.
Sienna Hills is one of Washington City's largest master-planned communities — roughly 740 acres off Washington Parkway, developed on Utah Trust Lands (SITLA) ground as a multi-village development.
The spine: the village decides the rules
This is the single most important thing to understand here, and it is unusual.
Sienna Hills deliberately mixes primary-residence neighborhoods with short-term-rental resort villages within the same community. The range runs from entry-level villas to substantial resort homes.
That means what you may do with a property depends on which village it sits in, not on the community as a whole:
- Some villages are designed and zoned for nightly rental.
- Others are ordinary primary-residence neighborhoods where rentals are restricted.
Two consequences follow, and both matter:
If you want to rent the property out, you must buy in a village that permits it. Buying elsewhere in the community and assuming the rules transfer is an expensive mistake.
If you do not want to live among short-term rentals, you must equally check — a village where nightly rental is permitted has a different rhythm, with visitors rather than settled neighbors.
Verify with Washington City for the specific address and with the village's own governing documents. Neither alone is sufficient.
Washington City, not St. George
Sienna Hills is in Washington, a separate city with its own zoning, ordinances and services. Rules from St. George do not apply. Washington County's public GIS publishes parcel and jurisdiction layers if you need to confirm.
Buying into a community still building
Sienna Hills is still building out, which brings the usual new-community considerations:
Get the phasing plan. Ask what is scheduled next to and behind the lot. A view over empty ground lasts exactly as long as the ground stays empty, and only the phasing plan will tell you that.
HOA dues may not be final. A builder still selling homes has every reason to keep them low, and the number normalizes once owners take over the board. Ask for the projection and the handover date.
Amenities may be promised rather than present. Ask what is committed in writing versus shown on a plan.
Bring your own agent from the first visit. Whoever greets you in the model home is paid by the builder, and builders commonly decline to recognize representation that appears later in the process.
Commission your own inspection before closing, then book a second at about eleven months while the first-year warranty still has time to run. Test for radon.
Who it suits
Well: buyers who want new construction with genuine price range; investors — provided they buy in a village that actually permits rentals; people who want Washington City's position east of St. George.
Less well: buyers wanting mature landscaping or a finished neighborhood; anyone who would find living among nightly rentals disruptive and does not check first.
Afterwards
Which village you bought in decides your rental options; it does not decide your tax treatment, which turns purely on whether the home is your domicile. A rented home is taxed on 100% of value against 55% for an owner-occupied one. Utah's residential exemption covers the claim and the thresholds.
Frequently asked questions
Can you buy a short-term rental in Sienna Hills?
Yes. Sienna Hills includes HOA-sanctioned short-term-rental resort villages — Paseos, Sendera, Escondido, and The Casitas — alongside primary-residence villages. Verify a specific village's zoning and rules before buying.
Why do Sienna Hills owners pay two sets of dues?
Budget for two layers, not one. A community association covers the whole development and each village adds its own sub-HOA, so the amount an owner pays is the sum and it varies considerably between a standard village and an amenity-heavy one. Ask for both figures for the specific address, and in a community still building, ask what is scheduled next to the lot.
What are Sienna Hills' HOA dues?
Sienna Hills is governed by a community association plus a sub-HOA for each village, so an owner pays both and the total varies with the village — amenity-heavy resort villages sit well above the typical ones. There is no single community-wide figure worth quoting. Ask for both layers for the specific address before budgeting.