The most expensive mistake in a fence project is not the material. It is putting the fence in the wrong place. Moving a finished run because it sits three feet onto a neighbour’s land costs more than the fence did, and vinyl and aluminium panels do not always survive being pulled and reset.
Here is how to establish where your boundary actually is, in rough order of cost.
Start with the deed and the recorded plan
Your deed contains a legal description of the parcel. On newer developments that description usually references a recorded subdivision plan, which is the more useful document — it shows lot dimensions and bearings rather than prose.
In Pennsylvania both live with the county Recorder of Deeds. York County holds recorded plans going back decades, and pulling one is inexpensive. Older rural descriptions can be a different experience: metes-and-bounds language referencing a stone, an oak, or a fence line that stopped existing in 1940 is common, and that is a sign you need a surveyor rather than a tape measure.
Find the pins
Most residential lots were pinned when they were created — iron rods or pipes driven at each corner, usually a few inches below the surface. A cheap metal detector finds them more often than people expect. Start at a corner you can approximate from the plan, sweep a small area, and dig carefully with a hand trowel.
Two cautions. Pins get moved: by utility work, by landscaping, by a previous owner who found one inconvenient. And a pin you find is evidence, not proof — if two pins do not agree with the recorded dimensions, believe the plan and get a surveyor.
When you genuinely need a survey
Hire a licensed surveyor when any of these apply:
- You cannot find pins, or the ones you find do not match the plan
- The description is metes-and-bounds referencing features that no longer exist
- A neighbour has expressed any disagreement about the line
- You are building close to the boundary rather than well inside it
- Your municipality requires a survey as part of the permit application
A boundary survey is a real cost. Set against relocating a completed fence, or against a title problem that surfaces at closing years later, it is usually the cheap option.
On the line, or inside it? This is the real decision
Generic advice tells you to find the line. It rarely tells you what to do once you have. There are two approaches and they have different consequences.
Inside your line. Set the fence six inches to a foot inside the boundary. Everything — posts, panels, footings, and the space needed to maintain both sides — is unambiguously yours. You give up a narrow strip of usable yard. You avoid nearly every dispute we see.
On the line. A boundary-line fence is typically a shared structure, which means shared decisions about style, height, colour and eventual replacement. It works when the relationship is good and there is a written understanding. It becomes complicated when the house next door sells.
Our default recommendation is inside the line, and we say so at the quote stage. Also worth knowing: many municipal ordinances set the finished side to face outward, and some govern how close a fence can sit to a road cartway — our guide to fence height and setback rules covers the measurements local ordinances tend to key on.
Talk to the neighbour first
Not because you need permission — on your own land you generally do not — but because a five-minute conversation before installation prevents the far longer one afterwards. Show them the plan. Say where the posts will go. If you are building on the line rather than inside it, get the agreement in writing.
What happens if a fence turns out to encroach
The usual remedy is relocation, at the cost of whoever built it. It can also surface at the worst possible moment — a title company flagging an encroachment during a sale, with a closing date already set.
Pennsylvania does recognise adverse possession, and long-standing fences occasionally feature in those claims. The standard period is 21 years of possession that is actual, continuous, exclusive, visible, notorious, distinct and hostile. Act 34 of 2018 added a 10-year route for certain residential parcels through a quiet title action with notice to the record owner (42 Pa.C.S. § 5527.1).
That is background, not a plan. The proof requirements are strict, and this is genuinely a question for a property attorney rather than a fence contractor. We mention it only because homeowners sometimes assume an old fence has already settled the boundary. It has not, unless a court says so.
What we do before we quote
We ask for the recorded plan, walk the line with you, and look for pins. Where the boundary is uncertain we say so and price the job assuming the fence sits inside it. On properties where the line genuinely cannot be established from available documents, we will tell you to get a survey before we put posts in the ground — that is a better conversation to have at the quote than after the concrete cures.
Boundary law and municipal requirements vary. Treat this as orientation, and confirm specifics with your county Recorder of Deeds, your municipality, and where necessary a licensed surveyor or attorney.
Schedule Your Free Fence Estimate
We will walk your line with you before quoting. Book at calendly.com/gatto-david/estimates or call 717-650-2132. See our vinyl fence range, the services we offer, or the York service area.