Pinal County, Arizona Pinal County & the Southeast Valley

Barndominium Builders in San Tan Valley, Arizona

We build barndominiums in San Tan Valley: steel-framed homes with a shop bay, pole-style builds on the larger lots at the edges of town, and turnkey projects that run from the pad to the final inspection. We also supply barndominium kits to owners who plan to raise the shell with their own crew. San Tan Valley is a new municipality. Pinal County's Board of Supervisors approved its incorporation on 17 September 2025, and the Town of San Tan Valley took over zoning, land use and subdivision review inside its limits on 1 July 2026. Building permits are the exception for now. Under an agreement with the town, Pinal County still takes the applications, reviews the plans against its 2018-based codes, issues the permit and inspects the work, and that agreement is scheduled to run through 31 December 2026. From 1 January 2027 the town's own code, based on the 2024 International Codes, is expected to govern. That date matters if drawings are started this year and submitted next year, so we settle it before a plan is finalised. If you are weighing barndominium contractors near San Tan Valley, ask each one how they will handle that handover. Start the survey and tell us where your lot is.

San Tan Valley at a glance

Principal county: Pinal County
Building permit: County (unincorporated land)
Local facts on this page: 5, each linked to its source

Tell us about your land

Before you build in San Tan Valley

The local answers that shape a build here, each taken from the office or document that publishes it. Rules change, so we confirm them again against your parcel before drawing.

County-issued permitWho issues the permit

Pinal County Building Safety, under an intergovernmental agreement with the Town of San Tan Valley (through 31 December 2026)

San Tan Valley incorporated as a town in September 2025, but Pinal County still issues its building permits under an intergovernmental agreement scheduled to run through 31 December 2026. Applications go to the county, plans are reviewed under county codes based on the 2018 International Codes, and the county inspects and issues the certificate of occupancy. From 1 January 2027 the town expects to take over permitting under its own 2024-based code.

Source: Information for Applicants Requesting a Building Permit for an Address or Project within the San Tan Valley Town Limits Beginning July 1, 2026 (azleague.org)

Incorporation: Pinal County reports that its Board of Supervisors formally approved the incorporation of San Tan Valley on 17 September 2025, recognising it as a town that day, and that the county would continue to provide services through 30 June 2026.
Who issues the building permit today: The town's applicant notice says that, while its intergovernmental agreement with Pinal County is in effect, applications are submitted to the county, reviewed under Pinal County codes based primarily on the 2018 International Codes, and permitted, inspected and given final approval or a certificate of occupancy by the county. Fees are paid to the county, with an added processing fee.
The 2027 code change: The same notice says that from 1 January 2027 the town's adopted building code, based primarily on the 2024 International Codes with San Tan Valley amendments, is to govern plan review, permitting and inspection. Standard plans approved by Pinal County may be accepted until 1 March 2027; after that they must be designed to the town's code.
Zoning and land division: The town's planning notice says that from 1 July 2026 new land use, zoning, subdivision, development review and related applications for property inside the town limits must be submitted to and processed by the Town of San Tan Valley. Minor land divisions filed with Pinal County before that date do not transfer to the town.
Septic and wells: Pinal County's Aquifer Protection program issues permits to construct conventional septic systems (up to 24,000 gallons per day) and alternative systems (up to 3,000 gallons per day), inspects their construction, and reviews well permit applications for referral to the Arizona Department of Water Resources on parcels of 5 acres and smaller.

Building on land near San Tan Valley

Land around San Tan Valley runs from subdivision lots to larger parcels along the edges of town, and the first check is which side of the town boundary a parcel sits on. Inside the limits, zoning and lot splits now go to the town; outside them, Pinal County's planning division still handles both. Ask the seller how the lot gets water, from a provider's main or a well, and whether a sewer line reaches it. A parcel without sewer needs a septic permit and a site inspection before the design is final, and on 5 acres or less Pinal County reviews a well application before it goes to the Arizona Department of Water Resources. We settle those answers first, then plan the pad, the drive and the building around them.

Other locations in this part of Arizona

Pinal County & the Southeast Valley

Barndominiums we build in San Tan Valley

Turnkey builds, kit packages and pole barn homes, drawn to the design figures and codes of the office that permits your land. The parcel decides the budget more than the floor area does, so we quote against your land rather than a rate card.

Turnkey Builds

Turnkey barndominiums in Arizona, raw land to keys: plans, permits, site work, a steel shell and the finish-out, built by us on one contract.

Barndominium Kits

Steel barndominium kits for Arizona land: a red-iron shell drawn to your jurisdiction's wind and snow figures, delivered and put up by our crews or yours.

Pole Barn Homes

Pole barn homes in Arizona, built as real houses: post-frame spans on concrete, termite protection for wood, and a wall that handles the desert heat.

See every service

Have land in or near San Tan Valley? Tell us about the parcel and what you want to build, and we will check it against the local rules before anything is drawn.

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Building in San Tan Valley: questions

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How much does a barndominium cost in San Tan Valley?

Much of that spread comes down to the parcel. A lot with sewer and a water main at the street costs far less to prepare than one that needs a septic system, a well and a long drive, and the permit route this year differs from next year's. Send us the parcel through the survey and we will price the work against that ground. Our barndominium cost guide sets out sourced ranges and what moves them.

Do I need a building permit for a barndominium in San Tan Valley?

Yes. Until the agreement ends on 31 December 2026, you apply to Pinal County, which reviews the plans under its 2018-based codes, issues the permit and inspects. Applications from 1 January 2027 are expected to go to the town under its 2024-based code. On turnkey builds we prepare the drawings and file the application; with a kit, we supply the drawings for your filing. See our permitting service.

Do you build steel frames or pole barn homes here?

Both. A bolted steel barndominium frame gives a wide clear span for a garage or shop bay, and pole barn homes set posts in the ground under a truss roof, which suits a larger lot. Either one can be finished as metal building homes with full interiors. Compare them on our steel construction and pole-barn pages.

Do you work outside the San Tan Valley town limits?

Yes. We build in Queen Creek, across unincorporated Pinal County and in Casa Grande. Each has its own permit office and code edition, so we confirm the jurisdiction on the parcel record before any drawing starts.

Keep reading

What usually comes next once you know what San Tan Valley allows.

Barndominium Cost Guide

Sourced per-square-foot ranges by tier and size, and what moves the number on your land.

Read it

Is a Barndominium Legal in Arizona?

Zoning, septic and who inspects, before you buy the land.

Read it

How Long Does It Take?

From parcel to move-in, and which steps set the clock.

Read it

Sources for this page

The published pages behind the San Tan Valley facts above. Rules change, so check the current version with the office before you rely on it.

Barndominiums near San Tan Valley

Nearby places we also cover. Across a city limit or a county line the permit office, zoning and septic rules can change, so each has its own page.

Queen Creek

Maricopa County, Arizona

Pinal County

Arizona county

Gilbert

Maricopa County, Arizona

Casa Grande

Pinal County, Arizona

Building in San Tan Valley?

Start with the survey. Tell us where the land is and what you want on it, and we will come back with which office permits it, what it will allow, and a plan to fit.

Start the survey