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Saratoga Springs · ADU cost

What it costs to build an ADU in Saratoga Springs, NY

800 sq ft ≈ $200k–260k $249–327/sq ft 23 districts National Grid

An 800 sq ft accessory dwelling unit in Saratoga Springs 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 city 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 City of Saratoga Springs maps 23 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 Saratoga Springs

Standard finish, slab on grade, on a flat and clear part of the lot, general-contractor margin included. These are structure costs at Saratoga County pricing, before the service and septic work a second dwelling can trigger.

SizeType$ / sq ftEstimated 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 ADUIf it scaled with floor areaFixed 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 Saratoga Springs 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
RR Rural Residential 2 ac 60 / 30 / 100 ft 35 ft Special permit
SR Suburban Residential 0.46 ac 30 / 15 / 30 ft 35 ft Special permit
UR-1 Urban Residential 1 0.29 ac 30 / 12 / 30 ft 40 ft Special permit
UR-2 Urban Residential 2 0.15 ac 10 / 8 / 25 ft 40 ft Special permit
UR-3 Urban Residential 3 0.15 ac 10 / 5 / 25 ft 40 ft Occupancy restricted
UR-4 Urban Residential 4 0.069 ac 10 / 5 / 25 ft 40 ft Occupancy restricted
R-MHP Manufactured Home Park 5 ac 50 / 50 / 50 ft 20 ft No
NCU Neighborhood Complementary Use 0.11 ac 5 / 5 / 25 ft 40 ft Special permit
AC Arts Corridor 0.11 ac 5 / 5 / 25 ft 40 ft Special permit
UN (T-4) Urban Neighborhood — - / 5 / 24 ft 40 ft Special permit
NC (T-5) Neighborhood Center — - / 0 / 0 ft 50 ft No
UC (T-6) Urban Core — - / 0 / 0 ft 70 ft No
OMB Office, Medical and Business 0.23 ac 40 / 15 / 25 ft 40 ft No
WRB Warehouse, Retail and Business 0.46 ac 40 / 15 / 25 ft 40 ft No
GC-U Gateway Commercial Urban 0.23 ac - / 15 / 25 ft 40 ft No
GC-R Gateway Commercial Rural 0.46 ac 40 / 20 / 25 ft 40 ft No
INST-ED Institutional Educational 0.29 ac 30 / 12 / 30 ft 50 ft No
INST-HTR Institutional Health, Tourism and Recreation 0.46 ac 30 / 12 / 30 ft 60 ft No
INST-MP Institutional Master Plan 2 ac 100 / 20 / 50 ft 50 ft No
INST-PR Institutional Parks and Recreation 2 ac 60 / 30 / 100 ft 40 ft No
IND-L Industrial Light 0.46 ac 40 / 15 / 25 ft 50 ft No
IND-G Industrial General 0.92 ac 40 / 15 / 30 ft 50 ft No
IND-X Industrial Extraction 10 ac 50 / 50 / 50 ft 50 ft No

RR Rural Residential - For a single-family or two-family dwelling the two side yards must total 100 ft, so a house cannot simply sit 30 ft from each side line. A corner lot also has a 60 ft corner side setback, separate from the front, side and rear.

  • The 25% total coverage counts buildings and paving together, which leaves little room for paving beyond the 20% building footprint.
  • A townhouse or apartment building is held to the 30 ft single-side figure alone.

SR Suburban Residential - A corner lot has a 25 ft corner side setback, separate from the front, side and rear. The 40% total coverage counts buildings and paving together, against 28% for the building footprint alone.

  • The 30 ft combined side yard applies to single-family and two-family dwellings only; a townhouse or apartment building is held to the 15 ft single side alone.

UR-1 Urban Residential 1 - The front setback is 30 ft or as set by the contextual front-setback rule of § 240-3.3B, and on a built-up block that section, not the 30 ft figure, sets the building line. A corner lot has a 25 ft corner side setback.

  • Where the principal building is within 20 ft of the side lot lines, the first floor elevation may be at most 4 feet.
  • The 30 ft combined side yard applies to single-family and two-family dwellings only; a townhouse or apartment building is held to the 12 ft single side alone.
  • The 50% total coverage counts buildings and paving together; the building footprint alone is capped at 28%.

UR-2 Urban Residential 2 - For a single-family or two-family dwelling the two side yards must total 20 ft, so 8 ft on each side does not conform. A nonresidential use needs a lot of at least 10,000 sq ft.

  • The front setback is 10 ft or as set by § 240-3.3B.
  • A corner lot has a 10 ft corner side setback, separate from the front, side and rear.
  • A townhouse or apartment building is held to the 8 ft single side alone.
  • The 70% total coverage counts buildings and paving together; the building footprint alone is capped at 40%.

UR-3 Urban Residential 3 - A two-family dwelling needs at least 8,000 sq ft on 80 ft of width, so the second unit costs 1,400 sq ft of land, and a nonresidential use at least 10,000 sq ft; the lot figures shown are for a single-family or single-family-attached dwelling.

  • For a single-family or two-family dwelling the side yards must total at least 12 ft, so a 5 ft side yard means at least 7 ft on the other side.
  • A townhouse or apartment building is held to the 5 ft single side alone.
  • The front setback is 10 ft or as set by § 240-3.3B.
  • A corner lot has an 8 ft corner side setback, separate from the front, side and rear.
  • The 70% total coverage counts buildings and paving together; the building footprint alone is capped at 40%.

UR-4 Urban Residential 4 - The residential lot minimum rises with the unit count at 3,000 sq ft per dwelling unit, so a four-unit building needs 12,000 sq ft. A nonresidential use takes a flat 10,000 sq ft instead.

  • A duplex needs 6,000 sq ft on 80 ft at that rate, and an eight-unit building 24,000 sq ft, which on 80 ft of frontage is a lot 300 ft deep, so frontage usually binds before the rate.
  • Minimum lot width is 60 ft for single-family and single-family-attached dwellings, and 80 ft for two-family, townhouse and multifamily alike.
  • For a single-family or two-family dwelling the side yards must total 12 ft; a townhouse or apartment building is held to the 5 ft single side alone.
  • The front setback is 10 ft or as set by § 240-3.3B.
  • A corner lot has an 8 ft corner side setback, separate from the front, side and rear.
  • The 75% total coverage counts buildings and paving together; the building footprint alone is capped at 40%.

R-MHP Manufactured Home Park - The 5 acre lot and 250 ft width are for the manufactured home park as a whole; an individual manufactured home site inside it needs at least 4,500 sq ft. The 20 ft height applies to the home site, not the park.

  • An individual manufactured home site needs 4,500 sq ft on 45 ft of width, with 10 ft interior side, corner side and rear setbacks and a 20 ft height.
  • Its front setback is 20 ft on a dedicated internal street and 10 ft on a private access drive, and a 20 ft separation is required between homes, measured wall to wall.
  • The 50 ft setback also applies to the corner side of a corner lot.

NCU Neighborhood Complementary Use - Nonresidential floor area is capped at 2,000 sq ft per building. A duplex needs at least 6,600 sq ft on 60 ft of width; the lot figures shown are for a single-family or single-family-attached dwelling.

  • A duplex needs 6,600 sq ft (0.1515 acres) on 60 ft, and a nonresidential use the same 5,000 sq ft on 50 ft as a single-family dwelling, where UR districts charge 10,000.
  • For a single-family, single-family-attached or two-family dwelling within 20 ft of the side lot lines, the first floor elevation may be at most 4 feet.
  • For a single-family or two-family dwelling the side yards must total 12 ft; a townhouse or apartment building is held to the 5 ft single side alone.
  • A corner lot has an 8 ft corner side setback, separate from the front, side and rear.
  • The 75% total coverage counts buildings and paving together; the building footprint alone is capped at 40%.
  • The Table 4-B garage-door and roof-form design rules apply in NCU.

AC Arts Corridor - Nonresidential floor area is capped at 2,000 sq ft per building. A duplex needs at least 6,600 sq ft on 60 ft of width; the lot figures shown are for a single-family or single-family-attached dwelling.

  • A duplex needs 6,600 sq ft (0.1515 acres) on 60 ft, and a nonresidential use the same 5,000 sq ft on 50 ft as a single-family dwelling, where UR districts charge 10,000.
  • For a single-family, single-family-attached or two-family dwelling within 20 ft of the side lot lines, the first floor elevation may be at most 4 feet.
  • For a single-family or two-family dwelling the side yards must total 12 ft; a townhouse or apartment building is held to the 5 ft single side alone.
  • A corner lot has an 8 ft corner side setback, separate from the front, side and rear.
  • The 75% total coverage counts buildings and paving together; the building footprint alone is capped at 40%.
  • AC is exempt from the Table 4-B garage-door placement and roof-form design rules.

UN (T-4) Urban Neighborhood - The front setback is a build-to zone of 12 to 18 feet, so a building may not be set back past 18 ft, and at least 50% of the frontage must be built to it, which does not apply to single-family, single-family-attached or two-family dwellings.

  • A multifamily or nonresidential building takes a 12 ft interior side setback rather than 5 ft.
  • The 12 ft combined interior side setback applies to single-family and two-family dwellings only, so a townhouse or apartment building is bound by the single-side figure alone.
  • On a corner lot a corner side setback applies on top of the front, interior side and rear: at least 12 ft for a residential building, and a build-to zone of 12 to 18 feet for a nonresidential one.
  • A nonresidential building has a minimum height of 24 feet against the 40 ft maximum, so a single-storey shopfront is not permitted.
  • The cumulative area of new and existing one-storey structures on any one lot is capped at 3,000 sq ft.
  • UN sets no minimum lot area, no minimum lot width and no maximum building coverage, so the 75% impervious surface cap is the whole of the coverage answer.

NC (T-5) Neighborhood Center - The front is a build-to zone of 5 to 12 feet where the public right-of-way is 40 ft or less, or 0 to 12 feet where it is wider, alleys excluded. At least 70% of the frontage must be built to it, except for single-family, single-family-attached, two-family and townhouse dwellings.

  • Height is capped at 1.1 times the width of the right-of-way or 50 ft, whichever is less, so a 40 ft right-of-way caps a building at 44 ft.
  • A minimum building height of 24 feet applies, so a single-storey building is not permitted, and one-storey structures are capped at 3,000 sq ft cumulative on any one lot.
  • Above the maximum base height the facade must step back at least 10 feet from the ground-floor facade line.
  • A height bonus may be approved under § 240-4.4B, and a building may exceed the maximum by up to 6 ft for no more than 25% of its facade width, to a depth of 30 ft.
  • An optional corner lot element of up to 25% of the building width may exceed the stepback height but not the overall height.

UC (T-6) Urban Core - A building must sit in a build-to zone 5 to 12 feet from a public right-of-way of 40 ft or less, or 0 to 12 feet from a wider one, alleys excluded, and at least 80% of that frontage must be built to it, with no exemption for any dwelling type.

  • Height is capped at 1.1 times the width of the right-of-way or 70 ft, whichever is less, so a 40 ft right-of-way caps a building at 44 ft.
  • A minimum building height of 24 feet applies, so a single-storey building is not permitted, and one-storey structures are capped at 1,500 sq ft cumulative on any one lot.
  • Above the maximum base height the facade must step back at least 10 feet from the ground-floor facade line.
  • A height bonus may be approved under § 240-4.4B, and a building may exceed the maximum by up to 8 ft for no more than 35% of its facade width, to a depth of 50 ft.
  • An optional corner lot element of up to 25% of the building width may exceed the stepback height but not the overall height.
  • UC sets no minimum lot area, no minimum lot width, no building coverage percentage and no impervious cap.

OMB Office, Medical and Business - On a lot abutting a residential district the side setback is 40 ft and the rear setback 50 ft, not the figures shown. A corner lot has a 40 ft corner side setback.

  • The 70% total coverage counts buildings and paving together; the building footprint alone is capped at 40%.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.

WRB Warehouse, Retail and Business - On a lot abutting a residential district the side setback is 40 ft and the rear setback 50 ft, not the figures shown. A corner lot has a 40 ft corner side setback.

  • The 70% total coverage counts buildings and paving together; the building footprint alone is capped at 45%.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.

GC-U Gateway Commercial Urban - The front is a build-to zone of 25 to 40 feet, and at least 50% of the frontage must be built to it. Buildings must be at least 24 feet tall, so a single-storey building is not permitted.

  • On a lot abutting a residential district the side setback is 40 ft and the rear setback 50 ft.
  • A corner lot has a 25 ft corner side setback.
  • The 85% total coverage counts buildings and paving together; the building footprint alone is capped at 45%.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.

GC-R Gateway Commercial Rural - On a lot abutting a residential district the side setback is 40 ft and the rear setback 50 ft. Buildings must be at least 18 feet tall.

  • The 20,000 sq ft lot minimum, the 18 ft minimum height and the 40 ft front setback are each qualified elsewhere in Article 4; read them against § 240-4.5.
  • A corner lot has a 40 ft corner side setback.
  • The 60% total coverage counts buildings and paving together; the building footprint alone is capped at 35%.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.

INST-ED Institutional Educational - A corner lot has a 30 ft corner side setback, separate from the front, side and rear. The 70% total coverage counts buildings and paving together; the building footprint alone is capped at 30%.

  • The side and rear setbacks do not increase next to a residential district.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.

INST-HTR Institutional Health, Tourism and Recreation - On a lot abutting a residential district the side setback is 40 ft and the rear setback 50 ft, not the figures shown.

  • The 80% total coverage counts buildings and paving together; the building footprint alone is capped at 45%.
  • A corner lot has its own minimum corner side setback, separate from the front, side and rear.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.

INST-MP Institutional Master Plan - On a lot abutting a residential district the interior side setback is 50 ft, not 20 ft. A corner lot has a 50 ft corner side setback.

  • The 80% total coverage counts buildings and paving together; the building footprint alone is capped at 70%.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.

INST-PR Institutional Parks and Recreation - The 15% impervious cap covers buildings, paths and parking together, and it is the only coverage limit here, with no building coverage cap. On a two-acre minimum lot that means about 13,000 sq ft of hard surface for everything on the site.

  • A corner lot has a 30 ft corner side setback, separate from the front, side and rear.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.

IND-L Industrial Light - On a lot abutting a residential district the side setback is 40 ft and the rear setback 50 ft, not the figures shown. A corner lot has a 40 ft corner side setback.

  • The 80% total coverage counts buildings and paving together; the building footprint alone is capped at 50%.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.

IND-G Industrial General - Building coverage and total coverage are both 70%, so the building may occupy the whole of the permitted hard surface, leaving nothing for paving beyond it. On a lot abutting a residential district the side setback is 40 ft and the rear 50 ft.

  • A corner lot has a 40 ft corner side setback.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.

IND-X Industrial Extraction - An extraction or quarry use must set back 100 ft on the front, corner side and rear; the 50 ft figures shown apply to other uses. The interior side is a flat 50 ft for both.

  • The 50 ft interior side setback does not rise next to a residential district.
  • Where the Water Protection, Floodplain, Historic Review or Architectural Review overlay applies, it adds requirements on top of this district's standards.
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Size limits on record in Saratoga Springs

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 Saratoga Springs:

Costs an ADU adds that a house does not

Sizing up a specific parcel in Saratoga Springs?

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 Saratoga Springs runs $204–268/sq ft, about $370k–480k at 1,800 sq ft . See what it costs to build a house in Saratoga Springs.

ADU cost in nearby towns

Mechanicville (City)
800 sq ft ≈ $200k–260k
Ballston
800 sq ft ≈ $200k–260k
Charlton
800 sq ft ≈ $200k–260k
Clifton Park
800 sq ft ≈ $200k–260k
Corinth
800 sq ft ≈ $200k–260k
Day
800 sq ft ≈ $200k–260k

All Saratoga County towns: Mechanicville (City) · Ballston · Charlton · Clifton Park · Corinth · Day · Edinburg · Galway · Greenfield · Halfmoon · Malta · Milton · Moreau · Northumberland · Providence · Saratoga · Stillwater · Waterford · Wilton · Ballston Spa (Village) · Corinth (Village) · Round Lake (Village) · Schuylerville (Village) · South Glens Falls (Village) · Stillwater (Village) · Victory (Village) · Waterford (Village)

More on Saratoga Springs: Can you build an ADU here? · Zoning for new construction · Saratoga County build cost

ADU cost in Saratoga Springs: common questions

How much does it cost to build an ADU in Saratoga Springs, NY?

An 800 sq ft accessory dwelling unit in City of Saratoga Springs 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 Saratoga Springs?

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 Saratoga Springs?

City of Saratoga Springs has 23 districts. 14 districts prohibit ADUs, 7 require a special-use permit, 2 allow them with occupancy restrictions. Check the specific address with the free ADU checker or confirm with the building department at (518) 587-3550 before you spend money on design.

Can I rent an ADU in Saratoga Springs short term?

Short-term rentals allowed with local rules for City of Saratoga Springs. 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 Saratoga 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 City of Saratoga Springs vary by district and often carry exceptions this page does not show; zoning last reviewed 2026-07-29; verify with the building department at (518) 587-3550 before relying on any answer. Sources: the Offsite / Aldo cost engine and zoning dataset.

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