Wheatland · ADU cost
What it costs to build an ADU in Wheatland, NY
An 800 sq ft accessory dwelling unit in Wheatland runs roughly $200k–260k, or about $249–327/sq ft, and that per-square-foot figure sits deliberately above the $204–268/sq ft a full house costs here. An ADU still needs one whole kitchen, one whole bath, its own service panel and its own heating plant no matter how small you draw it, and those costs do not shrink with the floor plan, so they land on half the square footage and push the rate up. Whether the town will let you build one is a separate question from what it costs, and it gets answered parcel by parcel rather than townwide, since the Town of Wheatland maps 5 districts that treat accessory units differently from one another, so read the table below as a starting point rather than a verdict.
Check a specific parcel for an ADU in Aldo, free →
ADU cost by size in Wheatland
Standard finish, slab on grade, on a flat and clear part of the lot, general-contractor margin included. These are structure costs at Monroe County pricing, before the service and septic work a second dwelling can trigger.
| Size | Type | $ / sq ft | Estimated total |
|---|---|---|---|
| 400 sq ft | Studio | $331–$433 | $130k–175k |
| 600 sq ft | One bedroom | $276–$362 | $165k–215k |
| 800 sq ft | One bedroom, larger | $249–$327 | $200k–260k |
| 1,000 sq ft | Two bedroom | $233–$305 | $235k–305k |
400 sq ft — One room plus a bath. Garage conversions and small backyard cottages land here.
600 sq ft — The most common detached build - a real bedroom, full kitchen, one bath.
800 sq ft — Room for a proper living area. Still a single bath and one kitchen.
1,000 sq ft — About as large as most codes allow an accessory unit to go.
Why the rate is higher than a house
The systems below are priced for an 800 sq ft unit. The middle column is what each system would cost if it simply shrank with the floor plan; the left column is what it actually costs once you account for the equipment a dwelling needs one of regardless of size. The gap between the two columns is the whole reason small builds price the way they do.
| System | $ / sq ft in an ADU | If it scaled with floor area | Fixed per unit |
|---|---|---|---|
| Site work | $7–$11 | $7 | — |
| Foundation | $16–$23 | $16 | — |
| Framing | $25–$32 | $25 | — |
| Envelope - roof, siding, windows | $32–$41 | $32 | — |
| Plumbing | $28–$34 | $16 | 55% |
| Electrical | $18–$24 | $13 | 35% |
| HVAC | $23–$28 | $15 | 45% |
| Insulation | $7–$9 | $7 | — |
| Interior finishes | $32–$43 | $27 | 15% |
| Millwork & cabinetry | $18–$28 | $11 | 55% |
The fixed-per-unit share is a modeling assumption, not a figure from the code: it is our estimate of how much of each system's budget buys equipment a dwelling needs exactly one of - a kitchen rough-in, a bath group, a service panel, a heating plant - and therefore does not shrink when the unit does. Site work, foundation, framing, envelope and insulation are treated as scaling straight with floor area, which understates the premium slightly, because a small building carries more envelope per square foot of floor than a large one.
What the Wheatland code says about accessory units
Whether you can build one, and how large, is decided by the district your parcel sits in rather than by the town as a whole. The table shows how each mapped district treats ADUs alongside the lot and setback standards a second unit still has to fit inside. District boundaries and conditions vary, so treat it as a starting point and confirm the district that applies to your parcel.
| District | Min lot | Setbacks F / S / R | Max height | ADU |
|---|---|---|---|---|
| Agricultural Residential 2 | 2 ac | 75 / 25 / 40 ft | 35 ft | No |
| Residence 24 | 0.92 ac | 50 / 15 / 35 ft | 35 ft | No |
| Residence 16 | 0.92 ac | 50 / 12 / 35 ft | 35 ft | No |
| Residence 12 | 0.46 ac | 35 / 10 / 30 ft | 35 ft | No |
| Residence A | 0.28 ac | 50 / 30 / 30 ft | 35 ft | No |
Agricultural Residential 2 - With public water, coverage rises from 10% to 20% and the land required per dwelling unit falls from two acres to 50,000 sq ft.
- With public water the lot drops to 50,000 sq ft and the width from 200 ft to 175 ft, and roughly 57% of the town's residential parcels have public water, so check it parcel by parcel.
- An open space development is a by-right form of at least 5 acres, and is mandatory for a subdivision of more than four lots from a source parcel of 100 acres or more.
- At least 40% of the gross site must be dedicated open space in common ownership, at least 75% of that contiguous with no portion narrower than 100 ft, and half of it kept natural.
- On a corner lot a side yard abutting the side street owes the same as the front yard, and front and corner-side setbacks are measured from the street line, not the property line.
- Where public sewers are not available, a lot must have enough space for a private sanitary waste disposal system, as determined by the Monroe County Health Department.
- Under § 130-32 a one-storey dwelling needs 1,000 sq ft on the ground floor; a taller one needs 1,300 sq ft in total and a first-floor area of at least 650 sq ft, at least 20 ft across.
Residence 24 - The lot minimum shown is the 40,000 sq ft required on septic; the nominal 24,000 sq ft lot applies only with public sewer and public water.
- Roughly 88% of the town's residential parcels are on private septic, so the 24,000 sq ft lot the district is named for is confined to the sewered area and the larger figure shown is the normal case.
- An open space development is a by-right form of at least 5 acres, and is mandatory for a subdivision of more than four lots from a source parcel of 100 acres or more.
- At least 40% of the gross site must be dedicated open space in common ownership, at least 75% of that contiguous with no portion narrower than 100 ft, and half of it kept natural.
- On a corner lot a side yard abutting the side street owes the same as the front yard, and front and corner-side setbacks are measured from the street line, not the property line.
- Where public sewers are not available, a lot must have enough space for a private sanitary waste disposal system, as determined by the Monroe County Health Department.
- Under § 130-32 a one-storey dwelling needs 1,000 sq ft on the ground floor and a taller one 1,300 sq ft in total, with a first-floor enclosed area of at least 650 sq ft.
Residence 16 - The nominal 16,000 sq ft lot applies only with public sewer and public water. On septic, R-16 requires 40,000 sq ft, the same as R-24.
- Roughly 88% of the town's residential parcels are on private septic, so the 16,000 sq ft lot the district is named for is confined to the sewered area and the larger figure shown is the normal case.
- An open space development is a by-right form of at least 5 acres, and is mandatory for a subdivision of more than four lots from a source parcel of 100 acres or more.
- At least 40% of the gross site must be dedicated open space in common ownership, at least 75% of that contiguous, and half of it kept in a natural undisturbed condition.
- On a corner lot a side yard abutting the side street owes the same as the front yard, and front and corner-side setbacks are measured from the street line, not the property line.
- Where public sewers are not available, a lot must have enough space for a private sanitary waste disposal system, as determined by the Monroe County Health Department.
- Under § 130-32 a one-storey dwelling needs 1,000 sq ft on the ground floor and a taller one 1,300 sq ft in total, with a first-floor enclosed area of at least 650 sq ft.
Residence 12 - The lot minimum shown applies with public water and Health Department approval of a septic system; the nominal 12,000 sq ft lot needs full public services.
- Roughly 88% of the town's residential parcels are on private septic, so the 12,000 sq ft lot the district is named for needs full public services and the figure shown is the normal case.
- An open space development is a by-right form of at least 5 acres, and is mandatory for a subdivision of more than four lots from a source parcel of 100 acres or more.
- At least 40% of the gross site must be dedicated open space in common ownership, at least 75% of that contiguous with no portion narrower than 100 ft, and half of it kept natural.
- On a corner lot a side yard abutting the side street owes the same as the front yard, and front and corner-side setbacks are measured from the street line, not the property line.
- Where public sewers are not available, a lot must have enough space for a private sanitary waste disposal system, as determined by the Monroe County Health Department.
- Under § 130-32 a one-storey dwelling needs 800 sq ft on the ground floor and a taller one 1,000 sq ft in total, with a first-floor enclosed area of at least 650 sq ft, 20 ft across.
Residence A - RA is the town's only multi-family district: the lot must be at least 12,000 sq ft, and the number of units is set by 3,500 sq ft of land per dwelling unit. It is available only with public sewer and public water.
- A single-family dwelling here follows note 3 instead: 80 ft of width, a 35 ft front setback, 10 ft to each side with 20 ft for the pair, 30 ft to the rear and 30% coverage.
- Its floor area is 800 sq ft for a one-storey dwelling and 1,000 sq ft in total for a taller one.
- An open space development is a by-right form of at least 5 acres, mandatory above four lots from a source parcel of 100 acres, with 40% of the site as open space and 75% of that contiguous.
- On a corner lot, a side yard abutting the side street owes the same as the front yard.
- Front and corner-side setbacks are measured from the street line, not the property line.
- Minimum floor area under § 130-32 runs by unit: 550 sq ft for an efficiency, 700 for a one-bedroom, 850 for a two-bedroom and 150 sq ft more for each added bedroom.
Size limits on record in Wheatland
Where the code states a size cap, it decides which row of the cost table above actually applies to you. These are the caps recorded for Wheatland:
- Agricultural Residential 2Minimum lot area is set per dwelling unit under § 130-11: R-24 24,000 sq ft, R-16 16,000 sq ft, R-12 12,000 sq ft, and AR-2 two acres without public water or 50,000 sq ft with it.
- Residence 24Minimum lot area is set per dwelling unit under § 130-11: R-24 24,000 sq ft, R-16 16,000 sq ft, R-12 12,000 sq ft, and AR-2 two acres without public water or 50,000 sq ft with it.
- Residence 16Minimum lot area is set per dwelling unit under § 130-11: R-24 24,000 sq ft, R-16 16,000 sq ft, R-12 12,000 sq ft, and AR-2 two acres without public water or 50,000 sq ft with it.
- Residence 12Minimum lot area is set per dwelling unit under § 130-11: R-24 24,000 sq ft, R-16 16,000 sq ft, R-12 12,000 sq ft, and AR-2 two acres without public water or 50,000 sq ft with it.
- Residence AMinimum lot area is set per dwelling unit under § 130-11: R-24 24,000 sq ft, R-16 16,000 sq ft, R-12 12,000 sq ft, and AR-2 two acres without public water or 50,000 sq ft with it.
Costs an ADU adds that a house does not
- Septic and water A second dwelling adds bedrooms to the design flow, which on an unsewered parcel often means expanding or replacing the existing system rather than tapping it. This is the single most common reason an ADU budget moves after design, and it is site-specific enough that no model should quote it - get it evaluated early.
- Utility service RG&E territory. A detached unit needs power run to it, and whether it goes on its own meter or subfeeds the main house changes both the cost and the permit path.
- Access and parking Many codes require an added parking space for the accessory unit, and a detached unit usually needs a driveway extension or a path, both of which count against a lot-coverage or impervious-surface cap.
- Short-term rentalsNo local short-term-rental law on record - which is not the same as permission. The Town of Wheatland has no local short-term rental law, and that is not the same as permission. Confirm with Code Enforcement before counting on renting a home short term. Separate question from whether you can build the unit.
- Zoning codeecode360.com/10501174
- Building dept(585) 889-1553
Sizing up a specific parcel in Wheatland?
Aldo pulls the exact zoning district, setbacks, and build feasibility for any parcel — before you buy. Enter your email to open Aldo and run your free report.
Building a full house instead?
A standard-finish house in Wheatland runs $204–268/sq ft, about $370k–480k at 1,800 sq ft , plus roughly $1,487 for a conforming lot. See what it costs to build a house in Wheatland.
ADU cost in nearby towns
All Monroe County towns: Rochester (City) · Brighton · Chili · Clarkson · Gates · Greece · Hamlin · Henrietta · Irondequoit · Mendon · Ogden · Parma · Penfield · Perinton · Pittsford · Riga · Rush · Sweden · Webster · East Rochester (Village) · Brockport (Village) · Churchville (Village) · Fairport (Village) · Hilton (Village) · Honeoye Falls (Village) · Pittsford (Village) · Scottsville (Village) · Spencerport (Village) · Webster (Village)
More on Wheatland: Can you build an ADU here? · Zoning for new construction · Monroe County build cost
ADU cost in Wheatland: common questions
How much does it cost to build an ADU in Wheatland, NY?
An 800 sq ft accessory dwelling unit in Town of Wheatland runs roughly $200k–260k at a standard finish, general-contractor margin included. A 400 sq ft studio runs about $130k–175k. Those are structure costs on an easy site and do not include the septic, water or electrical service work a second unit often triggers.
Why does an ADU cost more per square foot than a house in Wheatland?
Because a lot of a dwelling's cost is per dwelling, not per square foot. One kitchen, one bath group, one service panel and one heating plant cost about the same in an 800 sq ft cottage as in a 1,800 sq ft house, so on the smaller unit they get spread over less than half the floor area. That is why an ADU here prices at $249–327/sq ft against $204–268/sq ft for a full house, even though it is the same trades doing the same work.
Are ADUs allowed in Wheatland?
Town of Wheatland has 5 districts. All districts prohibit ADUs. Check the specific address with the free ADU checker or confirm with the building department at (585) 889-1553 before you spend money on design.
Can I rent an ADU in Wheatland short term?
No local short-term-rental law on record - which is not the same as permission for Town of Wheatland. ADU rules and short-term-rental rules are set separately, so a unit you are allowed to build is not automatically one you are allowed to rent nightly. Confirm both before you underwrite the build on short-term-rental income.
ADU costs are modeled estimates in current 2026 dollars at the Monroe County regional index, general-contractor margin included, derived from Offsite's cost engine with a stated adjustment for the equipment a dwelling needs one of regardless of size. They are planning numbers for decision-support only - not a bid, quote, or guarantee, and not legal, architectural or engineering advice. They cover the structure and exclude septic expansion, utility service runs, site work beyond a flat and clear pad, and permit fees. ADU eligibility, size, owner-occupancy and permit conditions in the Town of Wheatland vary by district and often carry exceptions this page does not show; zoning last reviewed 2026-08-13; verify with the building department at (585) 889-1553 before relying on any answer. Sources: the Offsite / Aldo cost engine and zoning dataset.