Buyers arrive at Conesus Lake with a number in their head. Eighty feet of frontage, or fifty, or a hundred and ten. They assume it maps neatly onto what they can do with the water. It does not, and the gap between what people assume and what the ordinances actually say is where most of the frustration on this lake comes from.
Here is what frontage really controls.
Your dock count is set by a formula, not by negotiation
All four towns on the lake — Conesus, Geneseo, Groveland and Livonia — run a near-identical docking and mooring ordinance. The rule is simple and unforgiving: one dock for up to 50 lineal feet of lakeshore, and one more for each additional 50 feet.
So 49 feet of frontage and 99 feet of frontage both get you one dock. The hundredth foot is worth more than the fifty before it. That is worth knowing before you pay a premium for frontage that does not cross a threshold.
Your boat count is set by a different formula
Boats scale faster than docks. Under 15 feet of frontage allows one boat. Fifteen to 20 feet allows two. Each additional 20 feet adds one more. Kayaks, canoes and rowboats under 14 feet generally do not count against you unless they are using mooring facilities.
The water rights line is not your property line
This is the part almost nobody from outside the area has encountered. Where your dock may sit is governed by a water rights line — a geometric projection into the lake, established by bisecting the angles between adjacent properties, using pie or long-lake methods depending on the shape of the shore.
It is not your side lot line extended straight out. On a curved shore the two can diverge substantially. Nothing may be moored, berthed, anchored or docked within five feet of that line, and on very narrow parcels there are special provisions.
If you are buying a lakefront home and the dock sits close to a neighbour, that line is the first thing to establish — and establishing it properly takes a surveyor, not a tape measure.
There is no grandfathering. None.
This is the single most expensive misunderstanding on Conesus Lake. The Livonia ordinance states plainly that prior permits are deemed null and void and that docking facilities carry no permanent vesting rights.
A seller telling you the dock has been there for thirty years is describing history, not a legal position. If a complaint is filed, the standard is what the current ordinance allows — and a complainant has to bring surveyor-prepared documentation to prove a violation, which means disputes here tend to be serious when they happen.
Then the state has its own layer
On top of the town rules sits New York DEC’s Lakes and Shorelines General Permit, which governs the dock itself: a new residential dock capped at 400 square feet and four feet wide (six with grated decking); one open frame-supported boat lift per dock; new riprap up to 150 linear feet where erosion is evident; repair of existing riprap and bulkheads within the current footprint; maintenance dredging up to 2,500 square feet at minimum ten-year intervals; and manual vegetation removal around docks up to 1,500 square feet.
So a Conesus buyer is working with two layers: the town decides how many docks and boats your frontage supports, and DEC decides how big the dock can be and what you may do to the shoreline itself.
One local difference worth knowing
Geneseo uniquely allows consolidation of facilities among neighbours by waiver, with consolidated facilities capped at 1,080 square feet. Conesus requires a lakeshore business permit for commercial operations, and prohibits using docks or moorings for sleeping or lodging.
What this means when you are actually buying
Frontage is not one number. It is a set of thresholds — 15, 20, 50 feet — and where a parcel falls against them matters more than the raw figure. Two homes with a twenty-foot difference in frontage can have materially different rights on the water.
Before you write an offer, establish four things: the measured frontage, the position of the water rights line, what is actually permitted today rather than what exists, and whether the parcel is inside a town sewer district. Conesus is one of the few lakes in the region where the shoreline is served by public sewer rather than septic, and that is worth confirming parcel by parcel.
I have talked about this in more depth elsewhere — including with KeyCrew Journal, on why frontage numbers explain less about price than buyers assume, and with Real Estate Today, on why the material facts sit in the paperwork.
If you are looking at a specific property on the lake and want the frontage question answered properly before you commit, that is exactly the call to make early.