Most buyers walk into a York City rowhome expecting the inspection report to be the moment of truth. It usually isn't. By the time an inspector pulls the attic hatch, the seller has already answered the question that decides who pays for what, and the answer is on a state-mandated form the buyer sometimes doesn't read closely enough.
Pennsylvania's Real Estate Seller Disclosure Law, codified at 49 Pa. Code § 35.335a and 68 Pa.C.S. §§ 7301–7315, only forces sellers to disclose what they actually know. In a 1910 rowhome held by three owners over a century, that leaves a large gap between what's on paper and what's in the walls. Four issues fill that gap over and over in York City transactions, and each one lives on a different side of the disclosure line.
Disclosure line versus contingency line
The practical question in any York deal is not whether an issue exists. It is whether the seller had to tell you about it before you signed, or whether you have to find it yourself during the inspection contingency and negotiate from a weaker position.
| Issue | On the PA Seller Disclosure? | Where it usually surfaces |
|---|---|---|
| Radon | Only prior test results and existing mitigation systems | Buyer's 48–96 hour inspection test |
| Knob-and-tube wiring | Yes, if seller knows | Inspector's attic and basement walk, then the insurance quote |
| Buried heating-oil tank | Yes, if seller knows of underground tanks | Yard probe, ground-penetrating radar, or the neighbor mentioning it |
| Lead-based paint (pre-1978) | Separate federal disclosure required | Assumed present unless tested out |
The pattern that matters: three of the four rely on seller knowledge, and seller knowledge in a rowhome that has changed hands multiple times is thin. That is the mechanism behind most repriced York deals. It is not the defect. It is the information asymmetry the disclosure form does not close.
Radon is the one you should assume, not test for
EPA classifies York County as Radon Zone 1, the highest risk category. County-average indoor readings run in double digits, and roughly a third of tested York homes exceed the EPA action level of 4 pCi/L. In a rowhome built on the Piedmont carbonate belt that underlies most of the city, elevated radon is closer to the baseline than the exception.
PA does not require sellers to test. It only requires them to disclose known results and any active mitigation system under 68 Pa.C.S. § 7304(B)(14). The practical result is a predictable dance during the inspection contingency: the buyer orders a 48–96 hour closed-house test under ANSI/AARST protocol, the number comes back at 6, 9, sometimes 15 pCi/L, and the buyer asks the seller to install a sub-slab depressurization system before closing. Local installers quote most jobs between $800 and $2,200, with straightforward basement retrofits landing in the middle. In York City, contractors have to be certified under PA Code § 240, and the PA DEP maintains the directory. Verify the certification number before the check clears.
For sellers, the strategic move in a Zone 1 county is often to test before listing. If the number is low, you disclose a favorable result and neutralize the biggest single ask in a York inspection response. If the number is high, you install the system on your own contractor timeline rather than under a 10-day contingency clock, and you list a home with a documented post-mitigation result under 4 pCi/L. That result travels with the property.
Knob-and-tube is now an insurance problem, not an electrical problem
Knob-and-tube wiring in a York rowhome used to be an electrical conversation. It is now a homeowners insurance conversation, and that shift is the one most buyers underestimate.
Insurers treat active K&T as one of the most common reasons to decline coverage on older homes. Where standard carriers will write the policy, industry reporting from Insure.com and others puts the premium loading at 50% to 100% versus a modernized home, and many carriers require complete removal from active service before issuing a standard HO-3. Central PA electrical contractor Haller Enterprises pegs a full rewire starting around $5,000 and scaling with home size. In a three-story York rowhome with plaster walls, the top of that range is where the real numbers live.
The transaction friction shows up like this. The inspector flags K&T in the attic and basement joists. The buyer's lender requires binding insurance before closing. The buyer's insurance agent runs the address through underwriting and comes back with a decline or a surplus-lines quote at multiples of what the buyer budgeted. Now the buyer has three choices, all bad if they surface at day 8 of a 10-day contingency: extend the contingency, ask the seller for a rewire credit that often exceeds the seller's remaining equity flexibility, or bridge with a surplus-lines policy carrying a 90-day to 12-month rewire obligation.
The PA disclosure form does ask about the electrical system, and case law is clear that a seller who knows about knob-and-tube has to disclose it. The problem is that a seller who bought the house in 2015 from an estate sale often does not know what is above the plaster. Assume the disclosure will say "no known issues" and plan to verify at inspection.
The buried oil tank question is on the form for a reason
The PA Seller Disclosure Statement asks two questions that matter in older York neighborhoods: whether the seller is aware of any underground tanks or hazardous substances on the property, and whether the seller is aware of any underground fuel tanks specifically. Both are on 49 Pa. Code § 35.335a. Buried heating-oil tanks fall under Pennsylvania's Storage Tank and Spill Prevention Act, and a leaking tank becomes an environmental remediation event rather than a real estate repair.
Many York rowhomes converted from coal to oil in the mid-20th century, then converted again to gas. The oil tank did not always leave. It got cut, capped, and buried, or the fill pipe got removed and the tank was forgotten. A buyer who suspects a former oil-heat conversion should ask the inspector to scan the yard and look for a fill pipe stub, a vent line coming through the foundation, or a patched hole in the basement wall where a supply line ran. If a tank is confirmed, professional removal typically runs into the low five figures, and any soil contamination pushes the number sharply higher.
For sellers, the honest answer on the disclosure is often "unknown," which is a defensible position under RESDL as long as it is actually true. It is not a defensible position if the seller inherited paperwork mentioning oil heat and did not connect the dots.
Lead paint is a separate federal form, not a checkbox
Any York home built before 1978, which covers most of the city core, triggers the federal Lead-Based Paint Disclosure addendum in addition to the state SPD. This is not the same document, and a listing package missing it is a compliance problem before it is a marketing problem. The addendum requires the seller to provide the EPA lead-hazard pamphlet, include the lead warning statement in the contract, and disclose any known test results or lead-based paint on the property. Buyers get a federally protected 10-day window to conduct their own lead assessment.
The strategic layer for rowhome sellers: most pre-1978 York homes have lead paint under later coats. The federal form does not require you to have tested. It requires you to say what you know. Sellers who guess or overclaim on this form take on liability that a plain "unknown" would have avoided.
Practical moves before you sign
- Ask for the completed Seller Property Disclosure Statement and the federal Lead-Based Paint addendum before you write the offer, not after acceptance. Read the electrical, environmental, and hazardous-substance sections line by line.
- Build the inspection contingency around the radon test window. A 10-day contingency is tight when the radon canister needs 48–96 closed-house hours plus lab turnaround.
- Get an insurance quote on the specific address before the contingency ends, not on a comparable. Underwriting sees the roof age, panel size, and any K&T notes on prior claims history.
- If the home was ever oil-heated, treat the yard scan and basement wall inspection as non-optional add-ons, not extras.
- Verify any radon mitigation contractor against the PA DEP certification directory before signing the work order.
FAQ
Does a passed radon mitigation system add value at resale? It removes an ask. A documented post-mitigation result under 4 pCi/L, plus the system paperwork and warranty, conveys with the property and eliminates the largest single credit request in most York inspection responses.
Can a seller refuse to fix knob-and-tube? Yes. The seller's obligation is disclosure, not repair. Whether the deal survives depends on whether the buyer can secure insurance the lender will accept, which is why K&T often kills deals at the insurance step rather than the negotiation step.
What if the seller did not know about an oil tank and one is found after closing? Recovery depends on proving the seller had actual knowledge. PA courts have ruled against sellers who concealed known defects but generally protect sellers who genuinely did not know. Documentation from prior owners is where these cases turn.
If you are buying or listing an older home in York City and want a straight read on what the disclosure form is likely to say versus what the inspection is likely to find, reach out to Spencer Blake for a free home valuation and a walk-through of the specific items to plan for on your address.
