Can Farmland Be Converted to a Data Center?

Large campuses need hundreds or thousands of contiguous acres, and farmland is where that much flat, open land exists in one or a few ownerships. Row-crop fields are already cleared, often well drained and gently sloped. Many rural areas have transmission lines crossing them, and the land costs less than suburban industrial ground.

Those strengths explain why many hyperscale and AI campus searches end up in agricultural areas. The same features make farmland valued by its community, which is why conversion takes more than a purchase agreement. Previously developed land is the usual alternative, with its own trade-offs.

Most farmland is zoned for agriculture, and few agricultural districts allow data centers by right. The usual paths are a rezoning to an industrial or technology district, a special or conditional use permit, or a planned development approval. Many counties also designate farmland for continued agricultural use in their comprehensive or land use plan, which may need an amendment before a rezoning can be approved.

• Read the zoning code to see whether data centers are named as a use and in which districts.
• Check the comprehensive plan’s future land use map for the parcels.
• Look for agricultural preservation districts, which in some states limit nonfarm uses or add review steps.
• Check whether the land is in a city’s growth area or could be annexed, which may change the approving body.
• Review recent hearings on similar requests in the county.

Our guide to zoning for data centers covers these approval paths in more detail. Farmland conversion is often the most visible issue in rural hearings, so early, honest community engagement matters.

Most states tax qualifying farmland at its agricultural use value rather than its market value. When the land stops qualifying, many states impose a rollback, recapture or conversion tax: the difference between the lower agricultural assessment and the full assessment for a set number of prior years, sometimes with interest. Some states apply a penalty instead, and a few have no rollback.

Rollback can be triggered by rezoning, a change in use, or the start of construction, depending on the state. The purchase agreement should say who pays it. Developers sometimes keep the land in farm production under a lease until construction begins, which can preserve agricultural treatment in states that base it on actual use. Check the state statute and the county assessor’s practice.

Farmland often carries agreements that do not show up on a quick title search, or that show up only as a line in the exceptions. Each needs to be found and resolved.

Verbal farm leases are common, and many states set default notice dates tied to the crop year. Missing the deadline can push possession back a full season. Treat the farm tenant as a stakeholder, since tenants are often well known in the community.

Much of the Midwest and parts of other regions rely on subsurface drain tile to make fields farmable. Tile lines often cross property lines and carry water from upstream farms. Cutting or blocking them during construction can flood neighbors’ fields and create disputes. Some areas also have legal drainage districts with assessment rights, easements and rules about altering ditches and tile mains.

• Ask the owner and tenant for tile maps, and expect them to be incomplete.
• Identify any drainage district, its ditches and its rules for alterations.
• Plan to reroute or maintain tile that serves upstream land.
• Build tile and drainage into the stormwater design. See stormwater management for data center campuses.

In western states that follow prior appropriation, irrigation water rights are tied to a use, place and amount. Moving them to industrial cooling generally needs a change application with the state water agency and may be contested. Groundwater rules vary widely, and some areas restrict new wells. Do not assume a farm’s water can serve a data center.

Private conversion of farmland generally does not need federal approval. Where there is a federal nexus, such as federal funding or a federal permit, the Farmland Protection Policy Act requires the federal agency to consider effects on prime and important farmland, and NEPA review may apply. Wetland permits under Clean Water Act Section 404 can be one source of that nexus.

Farmland also has its own Phase I issues: pesticide and fertilizer storage areas, fuel tanks, old dumps, and livestock facilities. Farmed wetlands may be present even in tilled fields, and soils can be wet or poorly drained where tile is doing the work.

For owners, a data center sale or lease can be a large, one-time change in the value of the land. Before signing, owners should understand the rollback tax, the effect on any tenant, the fate of conservation contracts, and whether to keep farming until construction. Families with multiple heirs should sort out ownership and decision-making early. Our guide to selling or leasing land to data center developers covers deal structures. When we review farmland, we start with power and zoning, then move to these agricultural items, since they rarely kill a site on their own but often set the timeline.