The parcel is twenty-two acres in a township an hour outside anywhere, with a plain four bedroom farmhouse near the road and a pole barn at the back of the field. The house rents for 2,300 dollars a month and has for three years to the same tenant. You are buying it for 285,000 dollars. The seller leases the field to a neighbor who cuts hay on it twice a summer.
The thing that makes the deal work is the tax line. The county bills this parcel 1,450 dollars a year. For twenty-two acres with a house on it, that number should be three or four times higher, and when you first see it you assume the assessment is just stale. It is not stale. The parcel is enrolled in a preferential assessment program, and the enrollment is the reason your ratio clears.
In Pennsylvania that program is Act 319 of 1974, which everybody calls Clean and Green. It is a bargain between a landowner and a county: the county assesses the land at its use value instead of its market value, and in exchange the land stays in farm or forest use. The savings are real and they are large. So is the exit cost, and the exit cost is the part that gets skipped in diligence, because it does not show up on the tax bill, the title commitment, or the appraisal. It shows up as a bill after closing, to you.
What is actually enrolled, and in which category
Clean and Green has three categories and they are not interchangeable from a landlord perspective.
Agricultural use. Ten contiguous acres or more, or land with an anticipated yearly gross agricultural income of at least 2,000 dollars, or land with an alternative energy system that uses most of its output on the tract. The land has to have been producing an agricultural commodity, or sitting in a federal soil conservation program, for at least three years before the application.
Agricultural reserve. Ten contiguous acres or more of noncommercial open space. This category carries a condition the other two do not, and I will come back to it, because it is the one that catches investors.
Forest reserve. Ten contiguous acres or more stocked with forest trees capable of producing timber or other wood products. Rented land can qualify here.
Moving a parcel between categories does not trigger anything. Moving it out of the program does. So the first question in diligence is not whether the parcel is enrolled, it is which category it is enrolled under, because that determines what you are allowed to do with it after you own it.
The rollback, and the number that is bigger than people expect
When enrolled land stops qualifying, the county recaptures the tax it did not collect. In Pennsylvania the recapture runs seven years, and it carries six percent simple interest per year on each year of deferred tax. You pay the difference between what was billed under the program and what would have been billed at market assessment, for seven years, plus the interest.
Run it on this parcel. Say the market assessment would have produced 4,900 dollars a year against the 1,450 you are actually being billed. That is 3,450 dollars of deferred tax a year. Seven years of that is 24,150 dollars. The six percent simple interest, accruing on each year from the year it was deferred, adds roughly another 5,800. Call the bill about thirty thousand dollars, and understand that the county computes it, not you, and that it is due in cash.
Thirty thousand dollars does not touch your coverage ratio. It is not an expense, it is a lump sum, and that is exactly why it is dangerous. A cash liability of that size is invisible to every screen a DSCR deal goes through. It does not appear in the rent, the taxes, the insurance, or the payment. There is nowhere on a ratio worksheet for it to show up.
What the ratio does when the enrollment ends
The ongoing tax change does show up, and it is the part worth modeling before you write the offer. The mechanics of the calculation are in how to calculate DSCR, and you can run both versions of this parcel in the DSCR deal calculator in about two minutes.
Finance 213,750 dollars at seventy five percent of the purchase price, thirty year amortizing, call it 7.25 percent. Principal and interest comes to about 1,458 dollars a month. Insurance on a rural house with outbuildings runs 1,500 dollars a year, so 125 a month. Taxes under the enrollment are 1,450 a year, so about 121 a month.
Payment of record: 1,458 plus 121 plus 125, which is 1,704 dollars. Against 2,300 dollars of rent the ratio is 1.35. That is a comfortable file.
Now unenroll the parcel. Taxes go to 4,900 a year, which is about 408 a month. Payment of record becomes 1,458 plus 408 plus 125, which is 1,991 dollars. Against the same 2,300 of rent the ratio is 1.16.
From 1.35 to 1.16 on one line item. If your program has a 1.20 floor, the deal that approved at application does not approve at renewal or on the next refinance, and nothing about the property changed. The tenant is the same, the rent is the same, the house is the same. The enrollment ended.
What actually ends an enrollment
Three things, in rough order of how often I see them.
A change in use. You stop farming it. You fence the field, put up a riding arena, gravel two acres for equipment storage, or simply let the hay lease lapse because dealing with the neighbor is annoying. Agricultural use means agricultural use. Nobody sends a warning letter first.
A split-off. You carve a piece out to sell. Pennsylvania allows this within limits: generally no more than two acres split off in a year, and cumulative split-offs may never exceed the lesser of ten acres or ten percent of the land originally enrolled. Stay inside those limits and the rollback applies only to the tract you split off, not to the remainder. Go outside them and you have broken the enrollment on everything.
A separation that later changes use. This is the one that should make you read the chain of title. When an enrolled parcel is divided into tracts that each still meet the program requirements, no rollback is due at the time of the division. But if one of those separated tracts changes to an ineligible use within seven years, its owner owes rollback and interest on the entire original parcel, not just on the tract they own.
Read that again, because it is the whole reason this post exists. If you buy a twelve acre piece that was separated out of an eighty acre enrolled farm two years ago, and you take it out of farm use, the bill that arrives is calculated on eighty acres. You will own a twelve acre tax liability measured against land you never bought. That exposure is not on the title commitment, because it is not a lien yet. It is a statutory contingency sitting in the parcel history.
The agricultural reserve trap
Here is the one almost nobody catches. If the parcel is enrolled as agricultural reserve rather than agricultural use, the land has to stay open to the public, free of charge, for passive outdoor recreation, on a nondiscriminatory basis. That is the deal. The county gave up the assessment in exchange for open space the public can walk on.
You can impose reasonable restrictions. No access after dark, no firearms, no motorized vehicles, closing off an area that is damaged or hazardous. You do not have to actively invite anybody, and nobody has to actually show up for the enrollment to hold. What you cannot do is close the land.
Now picture the ordinary landlord instinct. You buy a rental on twelve acres of reserve land, your tenant complains about people walking the back field, and you post the property and run a cable across the lane. You have just terminated the enrollment. Seven years, six percent, due in cash, because you were being a responsive landlord.
What to do before the deposit goes hard
Four things, and all of them are phone calls or records requests rather than paid reports.
Call the county assessment office and ask three questions: is this parcel enrolled, under which category, and what would the rollback be if it came out today. Most assessment offices will compute that last number for you, or at least give you the market assessment figure you need to compute it. Get it in writing if you can.
Pull the parcel history, not just the current deed. You are looking for split-offs and separations inside the last seven years. The deferring language in a standard title commitment will not flag this, and the broader treatment of what acreage does to an investor file is in financing a rental with acreage.
Read whatever is actually recorded against the land. A preferential assessment is not the only thing that can restrict a field. A recorded conservation easement is permanent in a way the enrollment is not, and a severed mineral estate or an oil and gas lease can put surface activity on the parcel that you did not plan for and that may itself be a change in use.
Underwrite the deal at the unenrolled tax number. If it only works at the enrolled number, you are not buying a rental, you are buying an obligation to keep farming. That may be fine. Decide it deliberately. And remember that the enrollment is not the only reason a tax figure moves after you buy: in many counties the sale itself triggers a reassessment, and the two effects stack.
How this reads to a lender
Honestly, most of the time it does not read at all, and that is the problem. The tax figure that goes into the ratio comes off the current bill. If the current bill says 1,450 dollars, that is the number in the file, and the file approves. Nobody is asking whether the number is contingent.
Where it does surface is appraisal and documentation. A rural parcel with acreage often has thin comparable sales to begin with, which is its own underwriting problem covered in rural and thin-market rental appraisals, and an appraiser who notes the farm use enrollment in the report puts the issue in front of an underwriter who then has to decide what to do with it. Sometimes the answer is nothing. Sometimes it is a condition requiring the rollback estimate in the file.
The documentation side matters more than people think. An investor file is thick with recorded instruments and affidavits that each do one narrow job, and getting one of them wrong is how a closing slips. If a correction is needed on a legal description or a recorded document after the fact, the mechanics are in corrective deeds and scriveners affidavits. If you are wondering why no consumer disclosure package arrives to flag any of this for you, that is covered in why a DSCR loan skips the Loan Estimate and the Closing Disclosure. A business purpose loan does not come with the consumer safety net, which is exactly why the diligence is yours.
Two more recorded items worth knowing on a parcel like this. Your lender will likely file a UCC-1 and a fixture filing, which on a farm parcel can reach equipment and improvements you were thinking of as separate from the house. And if the land came through a municipal or land bank program at some point, check for a reverter clause or a performance deadline in the chain, which can sit quietly in a deed for years.
One last item specific to rural ground. Walk the back of the parcel before the deposit goes hard. On a lot of older Pennsylvania and West Virginia acreage, what is physically out there is not on any document you were handed, and an orphan gas well in a back field is a liability question nobody raises at the closing table.
The short version
A low tax bill on acreage is usually a preferential assessment, not a bargain. It comes with a seven year lookback at six percent simple interest, it ends on a change of use that can be as small as letting a hay lease lapse or posting a field against trespassers, and if your tract was separated out of a larger enrolled parcel in the last seven years, the rollback is measured against the whole original parcel rather than your piece of it.
Underwrite at the unenrolled number. Get the rollback estimate in writing from the assessment office. Read the parcel history seven years back. If the deal only clears at the farm tax rate, you have bought a job, not a rental.
If you are looking at acreage and want a second set of eyes on the tax exposure before your contingency runs, get in touch or call 412-990-2941.
FMC Capital is a Pittsburgh-based mortgage brokerage, NMLS #1840537, placing loans on rentals and flips for investors across Pennsylvania and additional states. Nothing here is tax or legal advice. Program terms, rates and guidelines vary by lender and are subject to change. Assessment programs, rollback periods and interest rates are set by state and county law and differ by jurisdiction, so confirm the specifics with the assessment office for the county your parcel sits in.