Cheektowaga · ADU cost
What it costs to build an ADU in Cheektowaga, NY
An 800 sq ft accessory dwelling unit in Cheektowaga 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 Cheektowaga maps 13 districts that treat accessory units differently from one another, so read the table below as a starting point rather than a verdict.
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ADU cost by size in Cheektowaga
Standard finish, slab on grade, on a flat and clear part of the lot, general-contractor margin included. These are structure costs at Erie 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 Cheektowaga 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 |
|---|---|---|---|---|
| R Residence District | 0.17 ac | 25 / 10 / 25 ft | 30 ft | No |
| RS Single Residential District | 0.25 ac | 35 / 10 / 40 ft | 35 ft | No |
| RA Apartment District | 0.28 ac | 25 / 15 / 25 ft | 35 ft | No |
| RSC Senior Citizen Housing District | — | 50 / 20 / 25 ft | 50 ft | No |
| RMH Residential Mobile Home District | 0.11 ac | 15 / - / - ft | — | No |
| NS Neighborhood Services District | — | 50 / 5 / 5 ft | 30 ft | No |
| C Retail Business District | — | 50 / 10 / 10 ft | 30 ft | No |
| CM General Commercial District | — | 50 / 10 / 10 ft | 40 ft | No |
| MS Motor Service District | — | 50 / 10 / 25 ft | 40 ft | No |
| CF Community Facilities District | — | 50 / 15 / 15 ft | 65 ft | No |
| M1 Light Manufacturing District | — | 50 / 10 / 10 ft | 50 ft | No |
| M2 General Manufacturing District | 1 ac | 50 / 15 / 15 ft | 65 ft | No |
| AG Special Aggregates District | — | 200 / 200 / 200 ft | — | No |
R Residence District - The side and rear yards are percentages of the lot rather than the fixed figures shown, which are the caps: each side yard is 10% of the lot width and the two together 25% of it, so on a narrow lot both are smaller than shown.
- The rear yard is 25% of the lot depth and never less than 25 ft or the height of the principal building, so a 30 ft house owes a 30 ft rear yard
- A corner lot takes more land than an interior one: 10,200 sq ft on 85 ft of width
- Two principal buildings on one lot must stand 30 ft apart, or the average height of their facing walls if that is greater
- The 900 sq ft minimum livable ground floor area drops to 800 sq ft where the dwelling has an integral garage and livable floor space above the ground floor
- Accessory buildings are held to one storey and 12 ft
- No lot coverage or impervious standard is published here, and bulk is controlled through the yards, the height and the off-street parking requirement instead
RS Single Residential District - A second coverage cap covers accessory structures: 40% of the lot including the area under the principal structure, so accessory buildings buy the extra five points and no more.
- A corner lot takes 12,825 sq ft on 95 ft of width against the interior figures shown
- Accessory structures must stand 4 ft from any lot line and 10 ft from another structure, and may be no more than 12 ft high
- Minimum floor area is 1,200 sq ft for a one-storey dwelling and 1,400 sq ft for anything taller
- Height is two storeys as well as 35 ft
- The district's stated intent is low-density single-family detached development at roughly three dwelling units per gross acre, each on its own lot of at least 10,800 sq ft
RA Apartment District - The lot area is a base plus a per-unit rate: 12,000 sq ft for three dwelling units plus 3,500 sq ft for each additional unit above three, under a hard cap of 12 dwelling units per gross acre.
- The 150 ft frontage is for a standalone structure, which needs 150 ft abutting a dedicated street
- A structure within a development need not abut a street if the parcel has 100 ft of frontage on a dedicated street and the primary private drive is at least 28 ft wide
- The front yard is 25 ft from a public right-of-way but 30 ft from the pavement edge or curb of a private road, and the side yard 20 ft from a public right-of-way but 25 ft from a private road
- The side yard shown is the principal-building figure, 15 ft or half the height of the building, whichever is greater, and an accessory building owes 10 ft to a property line
- The rear yard is 25% of the lot depth and never less than 25 ft or the height of the principal building
- No building permit issues until the Town Board approves a site plan on the Planning Board's recommendation
RSC Senior Citizen Housing District - The district states no lot area and is sized by units instead: 1,000 sq ft per unit for a unit of one bedroom or less, and 1,500 sq ft per unit for two bedrooms or more.
- Occupancy is restricted to persons 62 or older, to a household where one or two persons is 62 or more, or to handicapped persons under 62 able to live without special medical or supervisory care
- The rear yard is 25 ft or half the height of the principal building, whichever is greater, and an accessory building owes 15 ft or half the height
- Two principal buildings must stand 30 ft apart, or the average height of their facing walls
- A fire lane at least 16 ft wide must ring the building for emergency vehicles, with parking barred on it and between it and the building
- At least 100 sq ft per unit must be set aside as social or recreational open space
- The developer must file a notarised affidavit that any future reuse for anything other than senior housing needs Town Board approval
RMH Residential Mobile Home District - The figures shown are for an individual mobile home lot. The park itself has a much larger entry threshold: a site of at least 20 acres with at least 50 mobile home lots fully serviced and available before initial occupancy, on a site width of at least 100 ft.
- At least 8% of the gross site must be recreation area
- Any structure must stand 25 ft from the park boundary, with fences, walls or plantings as boundary screening
- The front yard shown is measured from the right-of-way of a dedicated street; from a private street it is 25 ft from the pavement edge or curbline
- Principal structures must stand 20 ft apart
- A park office and small convenience retail serving residents are capped at 30 sq ft per lot in the park, up to 3,000 sq ft
- Density across the park may not exceed roughly eight units per gross acre
NS Neighborhood Services District - No minimum lot area is stated for this district, and the side and rear figures shown are the ones that apply where the lot abuts a nonresidential district. Abutting a residential district each becomes 10 ft.
- All uses except signs, landscaping and off-street parking, loading and stacking must be inside completely enclosed structures, so outdoor display and drive-through service are ruled out
- Parking, loading and stacking areas must sit 10 ft from any lot line and driveways 5 ft, and on a shallow lot that pavement rule binds first
- No coverage percentage is published: coverage is whatever the uses, yards, off-street parking, loading and stacking and landscaping leave over
- Site plan review by the Planning Board is required for all development, for any addition over 350 sq ft, and for any change of use
C Retail Business District - No minimum lot area is stated as a number: it is whatever is required to meet the parking and yard requirements, so size the parking first and the lot second.
- Two side yards are required at 10 ft each, but a side yard abutting a residential district boundary must be at least 20 ft or the height of the principal building, whichever is greater
- The rear yard follows the side-yard rule where it abuts a residential district
- A side yard used for one-way vehicular access must be at least 18 ft wide with a 12 ft driveway
- A side yard used for two-way access must be at least 30 ft wide with a driveway no wider than 24 ft
- No coverage percentage is stated
- Site plan review is required under § 260-29
CM General Commercial District - No lot size standard of any kind is stated, neither a minimum width nor a minimum area, so what sizes a lot here is the yard requirements plus the off-street parking requirement.
- The side and rear figures shown apply where the lot abuts a nonresidential district. Abutting a residential district each becomes 20 ft or the height of the principal building, whichever is greater
- Height and setback are coupled there: at the 40 ft ceiling that is a 40 ft side and rear yard, so on a shallow lot the full height is not reachable
- No coverage percentage is stated
- Site plan review is required under § 260-29
MS Motor Service District - The 10 ft side yard and the 25 ft rear yard apply where the lot abuts a nonresidential district. Abutting a residential district, each becomes 50 ft.
- A motor vehicle or trailer sale or rental use requires a lot of at least 1/2 acre
- Where more than one building sits on the lot they must stand 30 ft apart
- Parking, loading and stacking areas must be 10 ft from any lot line, except along a street line
- Fuel pumps and pump islands may sit in any yard abutting a street right-of-way, and in any other yard not abutting a residential district, at least 20 ft from any lot line and 10 ft from a building
CF Community Facilities District - Lot size here is a performance standard with no number: the parcel need only be adequate for the buildings, off-street parking, loading and stacking, landscaping, accessory uses, yards and open spaces.
- The side setback shown applies where the lot abuts a nonresidential district; abutting a residential district it is 25 ft
- The rear yard jumps further than the side: 15 ft abutting a nonresidential district but 50 ft abutting a residential one
- Parking and loading setbacks are separate and smaller: 15 ft from a dedicated street right-of-way, 5 ft from side and rear yards abutting nonresidential, 10 ft abutting residential
- A mausoleum must stand at least 200 ft from any adjoining residence district
- Any new cemetery must contain a single contiguous area of 20 acres or more
- No coverage percentage is stated
M1 Light Manufacturing District - No lot size standard is stated, neither width nor area. Side yards run 10 ft abutting a nonresidential district, 50 ft abutting a residential district and 20 ft abutting an existing residential use.
- Rear yards run 10 ft abutting a nonresidential district, 60 ft abutting a residential district and 20 ft abutting an existing residential use
- The article's stated intent is manufacturing, processing and warehousing involving truck traffic, noise and extensive outdoor storage, sited away from residential areas
- No coverage percentage is stated
- Site plan submission is required under § 260-35
M2 General Manufacturing District - The side and rear figures shown apply where the lot abuts a nonresidential district. Abutting a residential district each becomes 50 ft.
- Where more than one building sits on the lot they must stand 30 ft apart
- Parking and loading setbacks apply to pavement rather than buildings: 10 ft at the side and rear abutting nonresidential, 50 ft abutting residential, and 25 ft from a dedicated street right-of-way
- No coverage percentage is published: coverage is whatever the uses, yards, off-street parking, loading and stacking and landscaping leave over
AG Special Aggregates District - This district has one dimensional rule, and it binds an excavation exactly as it binds a building: nothing may stand within 200 ft of a public right-of-way or an adjacent property line.
- It is one perimeter rather than three yards, which is why the front, side and rear figures are identical
- A 200 ft perimeter consumes about 4.6 acres of a ten-acre square parcel, so the usable yield is far below the gross area
- No lot size, width, height or coverage standard is stated anywhere in this district
- Site plan submission is required under § 260-35
Size limits on record in Cheektowaga
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 Cheektowaga:
- R Residence DistrictA two-family lot in R needs 10,200 sq ft interior or 11,400 sq ft on a corner
- RS Single Residential DistrictA two-family lot in R needs 10,200 sq ft interior or 11,400 sq ft on a corner
- RA Apartment DistrictA two-family lot in R needs 10,200 sq ft interior or 11,400 sq ft on a corner
- RSC Senior Citizen Housing DistrictA two-family lot in R needs 10,200 sq ft interior or 11,400 sq ft on a corner
- RMH Residential Mobile Home DistrictA two-family lot in R needs 10,200 sq ft interior or 11,400 sq ft on a corner
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 National Grid 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 rentalsShort-term rentals allowed with local rules. Renting a home short term needs a town permit or license under Ch. 201, Short-Term Rentals, adopted 11-25-2025 by L.L. No. 5-2025. Separate question from whether you can build the unit.
- Zoning codeecode360.com/8758901
- Building dept(716) 686-3470
Sizing up a specific parcel in Cheektowaga?
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 Cheektowaga runs $204–268/sq ft, about $370k–480k at 1,800 sq ft , plus roughly $11,225 for a conforming lot. See what it costs to build a house in Cheektowaga.
ADU cost in nearby towns
All Erie County towns: Buffalo (City) · Lackawanna (City) · Tonawanda (City) · Alden · Amherst · Aurora · Boston · Brant · Clarence · Colden · Collins · Concord · Eden · Elma · Evans · Grand Island · Hamburg · Holland · Lancaster · Marilla · Newstead · North Collins · Orchard Park · Sardinia · Tonawanda · Wales · West Seneca · Akron (Village) · Alden (Village) · Angola (Village) · Blasdell (Village) · Depew (Village) · East Aurora (Village) · Farnham (Village) · Gowanda (Village) · Hamburg (Village) · Kenmore (Village) · Lancaster (Village) · North Collins (Village) · Orchard Park (Village) · Sloan (Village) · Springville (Village) · Williamsville (Village)
More on Cheektowaga: Can you build an ADU here? · Zoning for new construction · Erie County build cost
ADU cost in Cheektowaga: common questions
How much does it cost to build an ADU in Cheektowaga, NY?
An 800 sq ft accessory dwelling unit in Town of Cheektowaga 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 Cheektowaga?
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 Cheektowaga?
Town of Cheektowaga has 13 districts. All districts prohibit ADUs. Check the specific address with the free ADU checker or confirm with the building department at (716) 686-3470 before you spend money on design.
Can I rent an ADU in Cheektowaga short term?
Short-term rentals allowed with local rules for Town of Cheektowaga. 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 Erie 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 Cheektowaga vary by district and often carry exceptions this page does not show; zoning last reviewed 2026-08-21; verify with the building department at (716) 686-3470 before relying on any answer. Sources: the Offsite / Aldo cost engine and zoning dataset.