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.
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 | 0.165 ac | 25 / - / 25 ft | 30 ft | Occupancy restricted |
| RS Single Residential District | 0.248 ac | 35 / 10 / - ft | 35 ft | Occupancy restricted |
| RA Apartment District | 0.275 ac | 25 / 15 / - ft | 35 ft | No |
| RSC Senior Citizen Housing District | — | 50 / - / - ft | 50 ft | No |
| RMH Residential Mobile Home District | 0.115 ac | 15 / - / - ft | — | No |
| NS Neighborhood Services District (§ 260-30) — a TRANSITIONAL district, not a retail one. § 260-30 states the intent plainly: uses less intensive and less obtrusive than retail business, more compatible with adjacent residential, and STRICTLY LIMITED TO USES CONDUCTED IN AN ENCLOSED BUILDING. § 260-30F makes that a hard rule: all principal and accessory uses except signs, landscaping and off-street parking, loading and stacking must be inside completely enclosed structures — so outdoor display, outdoor storage and drive-through service are out by construction. Permitted principal uses start with telephone exchange and real-estate/professional offices. Minimum lot width 50 ft; NO MINIMUM LOT AREA IS STATED, so minLotSize is null by design. Front yard 50 ft. Side and rear yards are CONDITIONAL: 5 ft abutting a nonresidential district (recorded) and 10 ft abutting a residential district. Parking, loading and stacking areas must sit 10 ft from any lot line, and driveways 5 ft — those apply to the pavement, not the building, and on a shallow lot they bind before the building setback does. Maximum height 30 ft, the lowest of any Cheektowaga business district. There is no percentage anywhere — coverage is whatever is left after the yards, parking and landscaping are satisfied. Recording a number here would invent a standard the town does not impose. Site plan review by the Planning Board is required for all development, for additions over 350 sq ft, and for any change of use (§ 260-29). | — | 50 / 5 / 5 ft | 30 ft | No |
| C Retail Business District (§ 260-31) — the town's general retail district. Minimum lot width 50 ft. On a retail use with a large parking demand that formulation can bind much harder than any stated acreage would, because the parking count drives the lot size; size the parking first, then the lot. Front yard 50 ft. Side yards, TWO REQUIRED, minimum 10 ft each (recorded) — but where a side yard abuts a residential district boundary it must be AT LEAST 20 FT OR A DISTANCE EQUAL TO THE HEIGHT OF THE PRINCIPAL BUILDING, WHICHEVER IS GREATER, so a 30 ft building against a residential line needs a 30 ft side yard, not 20. Rear yard minimum 10 ft, and along a residential district boundary the same 20-ft-or-building-height rule applies. TWO FURTHER SIDE-YARD RULES ARE DRIVEWAY-DRIVEN AND ARE EASY TO MISS: a side yard used for ONE-WAY vehicular access must be at least 18 ft wide with a 12 ft driveway, and one used for TWO-WAY access at least 30 ft wide with a driveway no wider than 24 ft. So a lot that needs two-way side access needs 30 ft on that side regardless of the 10 ft minimum. Maximum structure height 30 ft. No maximum lot coverage is stated, so maxLotCoverage is null by design. Site plan review required per § 260-29. | — | 50 / 10 / 10 ft | 30 ft | No |
| CM General Commercial District (§ 260-32) — the more intensive of the two general business districts, and the one that allows the tallest building among them at 40 ft (against 30 ft in both NS and C). NO LOT SIZE STANDARD OF ANY KIND IS STATED — neither a minimum width nor a minimum area appears in § 260-32, so both minLotSize and minLotWidthFt are null by design rather than unread. What sizes a CM lot is the yard schedule plus the Article V parking requirement. Front yard 50 ft. Side yards 10 ft abutting a nonresidential district (recorded), and abutting a RESIDENTIAL district 20 ft or a distance equal to the height of the principal building, whichever is greater — at the 40 ft height ceiling that is a 40 ft side yard, four times the interior figure. Rear yard follows the identical pattern: 10 ft abutting nonresidential, 20 ft or building height abutting residential. THE HEIGHT AND THE SETBACK ARE THEREFORE COUPLED IN THIS DISTRICT — every extra foot of building height on a parcel adjoining residential costs a foot of side and rear yard, so on a shallow lot the 40 ft allowance is not actually reachable. No maximum lot coverage is stated; maxLotCoverage is null by design. Site plan review required per § 260-29. | — | 50 / 10 / 10 ft | 40 ft | No |
| MS Motor Service District (§ 260-33) — the auto-oriented district, and the one with the harshest residential buffers in the business group. Minimum lot width 100 ft, double the NS and C figure. minLotSize is recorded as null because the district itself imposes none; the 0.5 acre applies only to a vehicle or trailer sales/rental use, and is stated in the label rather than the field so it is not read as a blanket minimum. Front yard 50 ft. Side yard 10 ft abutting a nonresidential district (recorded) and 50 FT abutting a residential district — a fivefold jump, the steepest in the chapter. Rear yard 25 ft abutting nonresidential and 50 ft abutting residential. Maximum height 40 ft. Interior minimum building separation 30 ft where more than one building sits on the lot. Parking, loading and stacking areas must be 10 ft from any lot line except along a street line, per § 260-43B(2). FUEL PUMPS AND PUMP ISLANDS HAVE THEIR OWN RULE AND IT IS MORE PERMISSIVE THAN THE BUILDING SETBACK: they may sit in ANY yard abutting a street right-of-way, and in any other yard not abutting a residential district, provided they are at least 20 ft from any lot line and 10 ft from any building — so a canopy can occupy the 50 ft front yard that a building cannot. No maximum lot coverage is stated; null by design. § 260-33E carries additional provisions for legal nonconforming Motor Service uses in other districts. | — | 50 / 10 / 25 ft | 40 ft | No |
| CF Community Facilities District (§ 260-34) — institutional rather than commercial: cemeteries and mausoleums, colleges, universities, technical and theological schools with their offices, classrooms, laboratories, chapels, auditoriums, libraries, athletic facilities and DORMITORIES. It is recorded here because it carries a full dimensional schedule and because dormitory and institutional housing make it residentially relevant, not because it is a business district. Both minLotSize and minLotWidthFt are therefore null by design. Front yard 50 ft. Side yards 15 ft abutting a nonresidential district (recorded) and 25 ft abutting a residential district. Rear yard 15 ft abutting nonresidential and 50 FT abutting residential — note the rear jumps to 50 while the side only reaches 25, which is unusual and means a CF parcel backing onto houses is far more constrained than one merely beside them. Maximum structure height 65 ft, the tallest allowed anywhere in the town alongside M2. 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. TWO USE-SPECIFIC AREA RULES SIT INSIDE THE PERMITTED-USE LIST RATHER THAN THE DIMENSIONAL SCHEDULE: a mausoleum must be at least 200 ft from any adjoining residence district, and ANY NEW CEMETERY MUST CONTAIN A SINGLE CONTIGUOUS AREA OF 20 ACRES OR MORE. No maximum lot coverage is stated; null by design. | — | 50 / 15 / 15 ft | 65 ft | No |
| M1 Light Manufacturing District (§ 260-36) — the lighter of the two manufacturing districts. Article IV's stated intent (§ 260-35) is to provide for manufacturing, processing, warehousing and uses generally involving truck traffic, noise and extensive outdoor storage, sited away from residential areas and separated from them by large expanses of retail and office use. NO LOT SIZE STANDARD IS STATED — neither width nor area — so both fields are null by design; contrast M2, which requires 100 ft and one acre. Front yard 50 ft. Side yards: 10 ft abutting a nonresidential district (recorded), 50 ft abutting a residential DISTRICT, and 20 ft abutting an existing residential USE — so a house standing on land zoned nonresidential still earns a 20 ft buffer, while the zoning line itself earns 50 ft. Rear yards: 10 ft abutting nonresidential, 60 FT abutting a residential district (the single largest yard figure in the chapter), and 20 ft abutting an existing residential use. Maximum height 50 ft. No maximum lot coverage is stated; null by design. Site plan submission is required under § 260-35. | — | 50 / 10 / 10 ft | 50 ft | No |
| M2 General Manufacturing District (§ 260-37) — the heavy district, and the only manufacturing district with a stated lot minimum: minimum lot width 100 ft and MINIMUM LOT AREA ONE ACRE (recorded as 1). Front yard 50 ft. Side yards 15 ft abutting a nonresidential district (recorded) and 50 ft abutting a residential district; rear yard 15 ft abutting nonresidential and 50 ft abutting residential. Maximum height 65 ft, tied with CF for the tallest in the town. Interior minimum building separation 30 ft. side and rear abutting a nonresidential district 10 ft, side and rear ABUTTING A RESIDENTIAL DISTRICT 50 FT — the same as the building — and 25 ft from the right-of-way of a dedicated street, which is half the 50 ft building front yard. So the yard between the building and the street can hold parking from 25 ft out. MAXIMUM LOT COVERAGE IS NULL BY DESIGN AND AGAIN IT IS THE CODE'S OWN FORMULATION: § 260-37C(6) states coverage is "as uses and requirements of yard, off-street parking, loading/stacking areas, and landscaping" permit — a residual, not a percentage. § 260-37C(7) adds an access requirement for buildings and land. | 1 ac | 50 / 15 / 15 ft | 65 ft | No |
| AG Special Aggregates District (§ 260-38) — extraction, not manufacturing, and it is recorded because it is a mapped district with a real standard rather than because it is buildable. That figure is recorded identically as frontSetback, sideSetback and rearSetback because the code makes no distinction between them — it is one perimeter, not three yards, and it binds an excavation exactly as it binds a building. A 200 ft perimeter consumes about 4.6 acres of a 10-acre square parcel, so the effective yield of an AG site is far below its gross area. No lot size, no width, no height and no coverage standard is stated anywhere in the section, so all four are null by design rather than unread. Site plan submission is required under § 260-35. | — | 200 / 200 / 200 ft | — | No |
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. Short-term rentals require a Town permit or license under Chapter 201, Short-Term Rentals, adopted 11-25-2025 by L.L. No. 5-2025. § 201-3 requires the permit/license, § 201-5 requires compliance with Town, county and state law and § 201-7 sets the operating standards. § 201-6 lists prohibited practices. New York State's 2025 short-term rental registry (Ch. 99 of the Laws of 2025) separately requires every host statewide to register the unit regardless of local law. Confirm with Town of Cheektowaga at (716) 686-3470 before listing. Separate question from whether you can build the unit.
- 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 $11,244 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. 11 districts prohibit ADUs, 2 allow them with occupancy restrictions. 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: Offsite / Aldo cost engine (costEngine.js + constants.js); zoning dataset (municipalData.js).