ADU · Orange County

Can you build an ADU in Blooming Grove, NY?

Town of Blooming Grove has 6 districts. 3 districts prohibit ADUs, 3 allow them with occupancy restrictions. Check your address to confirm the district that applies to your parcel:

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What the Blooming Grove code says

An accessory apartment inside a single-family house needs a Planning Board permit in RR, RCI and RCII and is not permitted in ORI, NNI or SB. It may be occupied by no more than two persons in a family, and the house must be owner-occupied.

Conditions the code attaches:

The stated intent is housing for senior citizens, single persons and small households related to the owner-occupant
The house must have been lawfully built and used as a single-family detached dwelling continuously for at least 10 years before the application, shown by its certificate of occupancy date
The lot must meet all single-family bulk requirements and be at least 20,000 sq ft, and the house must have at least 1,500 sq ft of gross floor area
The apartment must be inside the house, at least 300 sq ft of contiguous gross floor area and no more than the lesser of 25% of the house's existing gross floor area or 750 sq ft
A larger apartment converts the house into a two-family dwelling, which requires a use variance
The Planning Board cannot waive these standards except where expressly allowed

What the Blooming Grove code indicates by district

The table below shows how each district treats ADUs, alongside the lot and setback standards that govern a second unit. District boundaries and conditions vary, so treat this as a starting point and confirm the district that applies to your parcel.

District	Min lot	Setbacks F / S / R	Max height	ADU
Rural Residential	—	—	35 ft	Occupancy restricted
Rural Crossroads I	0.069 ac	15 / 15 / 20 ft	40 ft	Occupancy restricted
Rural Crossroads II	0.069 ac	15 / 50 / 50 ft	50 ft	Occupancy restricted
Office/Research/Industrial	0.46 ac	50 / 50 / 50 ft	35 ft	No
Non-Nuisance Industrial	0.92 ac	35 / 25 / 70 ft	35 ft	No
Sustainable Business	10 ac	200 / 100 / 100 ft	45 ft	No

Rural Residential - Lot size, frontage, coverage and yards are set by the Planning Board during subdivision, and density is the real limit. A minor subdivision of three new lots or fewer may not exceed one unit per 2.33 acres of gross density.

On a parent parcel over twelve acres, the three new lots of a minor subdivision together may cover no more than a quarter of it
Each new lot in a minor subdivision is sized by what a septic system with a full hundred-percent reserve area and the separation distances to wells need
A major subdivision of more than three new lots may use a flat density of one unit per ten gross acres, or go through a five-step site analysis
The site analysis requires a Land Conservation Analysis, permanent preservation of at least half the total site area as open space, and Planning Board findings
An accessory structure must be at least 10 ft from the side and rear lines and may rise two storeys and 20 ft

Rural Crossroads I, Rural Crossroads II - A two-family dwelling is permitted by right on any conforming lot. A new multifamily dwelling is capped at eight units to the acre and is allowed only where public water and sewer are available.

The 30 ft lot width is a minimum street frontage
An accessory structure must be at least 10 ft from the side and rear lines and may rise two storeys and 20 ft

Office/Research/Industrial - Impervious surface of every kind, including parking and drives, is limited to 50% of the total project area. A Town Board special use permit can raise that to seventy-five percent, but only on the Board's findings.

For the higher limit the Board must find stormwater can be handled without impact to groundwater and no significant adverse impact on adjoining residential neighbourhoods
The open half of the site must be arranged to buffer buildings and parking from public roads and neighbours and to protect wetlands, watercourses and scenic views
Buildings over ten thousand square feet of footprint should be broken into visually separate but connected volumes
Buildings should sit in front of their parking lots to screen them from the road
Trademarked architecture that identifies a company by its building design is prohibited
An accessory structure must be at least 25 ft from the side and rear lines and may rise one storey and 35 ft

Non-Nuisance Industrial - The 35 ft height may rise to forty-five feet, but only where the setback to an adjoining residential lot is at least twice the building height, so a forty-five-foot building must stand at least ninety feet off any residential line.

An accessory structure must be at least 25 ft from the side and rear lines and may rise one storey and 35 ft

Sustainable Business - The share of the site that may be developed depends on the number of principal buildings: 30% for one, 35% for two, 40% for three and 45% for four or more, with the rest kept open.

Two or more principal buildings must be designed as a business park
Only a tenth to a fifth of the required open space may be developed as landscaped area or buffer, the share rising with the building count
An accessory structure must be at least 100 ft from the side and rear lines and may rise one storey and 50 ft
The Planning Board may add up to ten feet to an accessory structure's height where it finds no significant visual impact on adjoining residential uses or scenic resources

ADUs vs. short-term rentals in Blooming Grove

Short-term rentals allowed with local rules for Town of Blooming Grove. Short-term rental of a residential dwelling is regulated under § 235-12.1 of the Blooming Grove Zoning Code, added in 2017 by L.L. No. 4-2017. Chapter 235 has been amended repeatedly through 2025, so confirm the current terms with the Town before listing. These are separate questions from whether you can build an ADU — a unit you're allowed to add isn't automatically one you're allowed to rent nightly, so check both.

Good to know

Residential lot minimum0.069 ac — an ADU still has to fit the district's lot and setback envelope.
UtilityOrange & Rockland territory.
Zoning codeecode360.com/6947045
Building dept(845) 497-1002

ADU FAQ — Blooming Grove, NY

Are ADUs allowed in Blooming Grove, NY?

Town of Blooming Grove has 6 districts. 3 districts prohibit ADUs, 3 allow them with occupancy restrictions. Check your address with the free ADU checker, or confirm with the building department at (845) 497-1002.

Do I need a special permit for an ADU in Blooming Grove?

No district in Town of Blooming Grove requires a special-use permit for an ADU - 3 districts prohibit ADUs, 3 allow them with occupancy restrictions. Site-plan review or a building permit may still apply.

Can I use an ADU as a short-term rental in Blooming Grove?

Short-term rentals allowed with local rules for Town of Blooming Grove. ADU occupancy and short-term-rental rules are separate: an ADU you can build isn't automatically one you can rent nightly. Confirm both before you count on STR income.

Run the free ADU check for your parcel →

What an ADU costs to build in Blooming Grove

Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $205k–270k at a standard finish, and the per-square-foot rate comes in above a full house because the kitchen, bath, panel and heating plant cost the same either way. See the full cost to build an ADU in Blooming Grove, priced by size.

How we know this

Sections analyzed: 235 Attachment 1 (Table of General Use Requirements) · § 235-45.6 · § 235-4
Districts confirmed: 6 of 6 — every mapped district.
Last reviewed: 2026-09-15
Not covered here: Overlay districts, the zoning map, and any conditions attached to an individual parcel. Size limits and owner-occupancy terms sit in the code section above, not in this summary.

More on Blooming Grove: Full zoning for new construction · ADU build cost · House build cost · ADU rules across Orange County · All Orange County towns

ADU information for Town of Blooming Grove is compiled from the municipal code (last reviewed 2026-09-15) and provided for decision-support only — not legal or architectural advice. ADU eligibility, size, owner-occupancy and permit conditions vary by district and often carry exceptions; verify with the building department at (845) 497-1002 before relying on any answer. Source: the Offsite / Aldo zoning dataset.