Across Chester, Bucks, and Montgomery counties’ horse country and woodland, tens of thousands of acres carry tax bills a fraction of what the land is worth, courtesy of Clean and Green, Pennsylvania’s Act 319 preferential assessment. The program is a gift while you hold the land and a trap when you sell it wrong: seven years of rolled-back taxes plus 6% interest, sometimes on the entire tract, triggered by mistakes as simple as an oversized split-off. This guide covers the sale of enrolled land from the owner’s side, built on the statute, the regulations, and the Department of Agriculture’s own guidance.
What Clean and Green is, and why the tax bill looks like that
Act 319 lets qualifying land (agricultural use, agricultural reserve, or forest reserve, generally ten acres or more, or smaller parcels producing $2,000+ in annual farm income) be assessed at use value instead of market value. More than 12 million acres are enrolled statewide, per the Pennsylvania Department of Agriculture. Enrollment is a covenant that runs with the land: the tax savings are real and annual, and the county keeps both values on file, the market value your buyer sees and the use value your tax bill reflects. The gap between them is the coiled spring.
Rollback taxes: the seven-year, 6% math
- The formula: for the current year and six prior (or the enrollment period if shorter), the difference between preferential and normal taxes, each year’s difference carrying 6% simple interest to the present, per 7 Pa. Code 137b.89.
- The trigger is use change or removal, not sale: a buyer continuing eligible use inherits the enrollment with no rollback anywhere; the liability belongs to whoever owns the land when the use changes.
- The magnitude: $8,000 a year in savings becomes roughly $56,000 of rollback plus interest approaching $70,000 total; order the county’s estimate before pricing anything.
- Condemnation is the exception: eminent domain takings do not trigger rollback on the taken land.
Separations and split-offs: selling pieces correctly
| Mechanism | What it is | Rollback consequence | The rules that bite |
|---|---|---|---|
| Separation | Division into tracts (generally 10+ acres each) that all continue in eligible use | None, if every tract stays eligible | A use change within 7 years of the separation can subject the entire original tract to rollback |
| Split-off | Conveying up to 2 acres/year for a residence occupied by the grantee (3 acres where zoning requires) | Rollback due, but only on the split-off acres | Cumulative cap: lesser of 10 acres or 10% of the enrolled tract; speculative building lots do not qualify; 30 days’ advance notice to the assessor |
Exceed the split-off limits or convey for an ineligible purpose and the rollback can reach the entire enrolled tract, not just the piece conveyed. The regulation itself tells landowners to engage the county assessor before a planned split-off; treat that as mandatory.
Who pays: structuring the sale of enrolled land
- 01Market to the continuation buyer first: farm, equestrian, and conservation buyers pay full price with zero rollback anywhere; that segment often nets more than a development sale carrying a six-figure rollback credit.
- 02Put Act 319 in the agreement of sale explicitly: who bears rollback on a use change, buyer’s acknowledgment of the covenant, and the county notification mechanics. Silence is the malpractice pattern.
- 03Development sales price the spring: builder offers arrive net of rollback; compare them against continuation offers on an after-everything basis, not headline price.
- 04The gain math rides along: land sales beyond the residence and its curtilage sit outside the Section 121 exclusion; the PA and NJ tax guide and your accountant belong in the plan early.
The seller's Act 319 playbook
- 01Confirm enrollment and history at the county assessment office: original application, acreage, prior split-offs (they count against the cap).
- 02Order the rollback estimate from the assessor before listing; it is the number every negotiation orbits.
- 03Decide the buyer strategy: continuation versus development, priced after-everything, with the valuation covering the residence and the land story told accurately in the listing.
- 04Counsel with 319 experience drafts the agreement; the well and septic guide usually applies to the same properties, and the fee index carries the township paperwork.
Samantha, SRES®, sells the collar counties’ larger properties, where Act 319 enrollment is the rule, not the exception. If you are downsizing off enrolled land, start with the free valuation and ask her to walk the rollback math with your county’s numbers before anything lists. The program rewarded you for decades of stewardship; the sale should not claw it back through carelessness.