Sienna Hills Neighborhood

Sienna Hills is one of Washington City's largest master-planned communities — a roughly 740-acre, multi-village development off Washington Parkway spanning entry-level villas to substantial resort homes, with a mix of primary-residence neighborhoods and short-term-rental resort villages.

Living in Sienna Hills

Sienna Hills sits in Washington, Utah, not St. George — a distinction that matters because Washington City sets the zoning, business-licensing, and short-term-rental rules that govern the community, and Washington County School District draws its own attendance boundaries independent of the St. George city limits next door. The community occupies roughly 740 acres of former Utah Trust Lands immediately south of I-15, reached from Washington Parkway at Exit 13 and from East Telegraph Street. The School and Institutional Trust Lands Administration (SITLA) began master planning the site in 1999, when the land was raw and poorly accessed, and worked with Washington City on the design and construction of Washington Parkway itself and on siting the Exit 13 interchange before selling parcels to builders in phases starting in the mid-2000s. Construction has continued since, so the community mixes homes now two decades old with subdivisions still filling in.

Sienna Hills today is organized into more than a dozen individually managed neighborhoods — among them Sienna Heights, Garden Homes, Arroyo, Desert Ravine, Copperleaf, and Ladera, plus the resort villages of Paseos, Sendera, Escondido, and The Casitas — each with its own HOA, under a master association that coordinates shared parks, entry features, and an internal trail system. That gives Sienna Hills a split personality: family-oriented, owner-occupied streets sit beside HOA-sanctioned nightly-rental villages built for vacation-rental performance, all inside one master plan and ZIP code.

Homes for sale in Sienna Hills

Sienna Hills covers a wide product range rather than one house type. Garden Homes and the Villas offer attached and single-level options for buyers who want less exterior upkeep. Sienna Heights, Arroyo, and Desert Ravine are conventional single-family subdivisions with one- and two-story plans. Copperleaf and Ladera run toward larger single-family and view lots, with Ladera's elevated parcels among the more substantial homes in the community. Paseos, Sendera, Escondido, and The Casitas are resort-style villages, built out largely by Ivory Homes, designed around nightly rental — smaller lots and two-car garages that trade yard space for proximity to a shared pool complex. Because the community is still filling in, current-phase new construction sits alongside twenty-year-old resale homes in the earliest villages, so expect real variation in age and finish level from one street to the next, not a single uniform product.

What determines home prices here

The single biggest driver is which of Sienna Hills's neighborhoods a home sits in, because the community deliberately mixes products that do not compete with each other — an attached garden home does not price against a Ladera view lot, and a resort-village home does not price the way a primary-residence home on Arroyo does. Within a given neighborhood, three things move price further: whether the HOA permits short-term rental, since STR-approved villages draw investor demand primary-residence villages do not; lot type, attached versus detached versus view; and vintage, original mid-2000s phases versus current construction. Because SITLA sold land to multiple builders across two decades rather than releasing it all at once, no single construction-cost baseline applies community-wide — the reliable way to price a specific home is by its neighborhood and phase, not by a Sienna Hills-wide average.

HOA and community rules

Every home in Sienna Hills belongs to two HOAs at once: its own neighborhood association, which sets that neighborhood's dues, architectural rules, and, where applicable, rental policy, and the Sienna Hills master association, which funds shared parks, trails, and entrance features through a small assessment folded into each neighborhood's bill. A Planned Community Development document functions as the community's zoning framework, and a Design Review Committee must approve exterior changes — paint, fencing, landscaping — on top of each neighborhood's own CC&Rs. Because dues, rental rights, and design rules are set at the neighborhood level, two homes a few streets apart can carry meaningfully different obligations; confirm the specific neighborhood's CC&Rs and current dues before writing an offer, rather than assuming the master association covers everything. Short-term rental is not a community-wide right: Washington City approves it subdivision by subdivision under its RRST overlay, so eligibility is a property of the specific village, not of Sienna Hills as a whole — check a village against the city's list before writing an offer rather than assuming a neighboring village's status carries over. As of this research, the overlay covered the Paseos, Sendera, Escondido, and Casitas villages, but a city council vote can add or drop a village, so treat that list as an example, not a guarantee. Buying in a village outside the overlay to run nightly rentals runs into both the HOA's rules and the city's licensing requirement.

Schools and access

Sienna Hills falls in Washington County School District, not a separate St. George city district, and the boundary sends most Sienna Hills addresses to Coral Canyon Elementary. From there, the feeder path splits by address between Fossil Ridge and Lava Ridge intermediate schools for grades six and seven, then Pine View or Snow Canyon middle school for grades eight and nine, and finally Pine View or Snow Canyon high school — so two Sienna Hills households can legitimately feed different secondary schools; confirm the assignment for a specific address with the district rather than assume the whole community feeds one high school. Road access is Washington Parkway at I-15 Exit 13 on the north and East Telegraph Street on the south, within reach of both St. George's employment core and Washington City's own retail corridor along Telegraph.

Who Sienna Hills suits

Sienna Hills suits a buyer who wants a newer, HOA-managed neighborhood with amenities already built, rather than a mature, tree-canopied street — the community's oldest phases are only about two decades old, so landscaping and shade trees are still filling in even in the earliest villages, and buyers who specifically want the mature yards found in older St. George or Bloomington neighborhoods should look elsewhere. It also suits two buyers who should not be confused with each other: the primary-residence buyer who wants a family neighborhood near a park and school, and the investor who wants an HOA-sanctioned nightly-rental property in Paseos, Sendera, Escondido, or The Casitas. Buying in the wrong village for either goal creates real problems — a primary-residence buyer in a resort village lives next to rotating short-term guests, and an investor in Sienna Heights or Arroyo cannot legally rent nightly at all. It does not suit someone who needs to be minutes from St. George Regional Hospital or downtown St. George offices, since Sienna Hills sits on the far side of I-15 in Washington City proper, several minutes further out than St. George's central neighborhoods. And because dues, design rules, and rental rights are set neighborhood by neighborhood rather than community-wide, it does not suit a buyer who wants one simple, predictable HOA — Sienna Hills rewards a buyer willing to read one specific neighborhood's documents rather than assume the whole community works the same way everywhere.

Apartments in Sienna Hills

Guides about Sienna Hills

Brokerages near Sienna Hills

Real estate offices located close to Sienna Hills.

Browse all St. George brokerages → · Get a free relocation packet · Browse agents

Nearby communities

Browse all St. George master-planned communities →

Frequently asked questions

Why do HOA dues vary so much between Sienna Hills neighborhoods?

Because each neighborhood association funds only its own amenities. A garden-home or villa association with no pool costs far less to run than a resort village maintaining a lazy river, waterslide, and hot tubs for nightly guests. A small shared master-association due, folded into every neighborhood's bill, is the only cost that's the same community-wide.

Who actually developed Sienna Hills, and why does that matter?

The School and Institutional Trust Lands Administration (SITLA), a state agency that develops trust land to generate revenue for Utah's public schools - not a single private homebuilder. SITLA negotiated the Washington Parkway interchange and infrastructure with Washington City before selling parcels to builders in phases, which is why Sienna Hills reads as one master plan even though its neighborhoods were built by different companies over two decades.

Where is Sienna Hills located?

In Washington City, Utah (ZIP 84780) - not St. George, despite sitting immediately across I-15 from it. Sienna Hills has never been annexed into St. George, so its zoning, business licensing, and property taxes run through Washington City rather than its larger neighbor, off Washington Parkway (I-15 Exit 13) in the Washington Fields area.

Can you do short-term rentals in Sienna Hills?

Yes, but only where both the HOA and Washington City agree. Paseos, Sendera, Escondido, and The Casitas are HOA-sanctioned and city-licensed for nightly rental; other villages are primary-residence only. Washington City requires a licensed local point of contact within the county and can suspend a rental license after repeated violations, so an unlicensed rental even in an approved village still carries real enforcement risk.

What amenities does Sienna Hills have?

It depends which amenities and who's asking. Sienna Hills Park is a Washington City park open to the public. The Paseos resort amenity center - pool, lazy river, hot tubs, waterslide, pickleball - serves Paseos residents and their renters, not the whole community; other villages have their own smaller pools and clubhouses reserved the same way. A buyer touring on the promise of a lazy river should confirm which neighborhood actually grants access to it.

Why do two similar-looking Sienna Hills homes price so differently?

Because one is probably underwritten as a primary residence and the other as a rental asset. In Paseos, Sendera, Escondido, and The Casitas, buyers and appraisers weigh projected nightly-rental income alongside comparable sales, which is not how a home in Arroyo or Sienna Heights gets priced. Comparing a primary-residence-only home against a resort-village comp, or the reverse, is a common and costly mistake in this community.

How big is Sienna Hills?

About 740 acres, developed by the School and Institutional Trust Lands Administration (SITLA) from raw, poorly accessed trust land starting in 1999. SITLA continues to market commercial parcels within Sienna Hills, so the community's commercial core remains less built out than its residential side even as housing phases near completion.

← All St. George neighborhoods · Master-planned communities