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Suffolk County · local planning notes

Planning a kitchen or interior remodel in Commack

Commack is a hamlet that sits in two towns. Two houses with a Commack mailing address can be covered by different building departments, with different filing routes and different ways to look up past permits. Before a kitchen or bathroom brief goes to anyone for pricing, find out which town your house is in, using the address and the property's tax map record rather than the hamlet name.

Part of our Suffolk County service area. Confirm the building authority for your exact address.

What this page covers

This page is about kitchen, bathroom and interior renovation planning for owners of single-family and two-family houses with a Commack address. Structural alterations, additions and new construction are not current planned services. Project availability and service-area approval have not been established.

Why Commack is different

One hamlet name, two towns

The Suffolk County Clerk's town and district code table lists Commack with an asterisk, which the table defines as an area that lies in more than one township, and gives it the codes for both the Town of Huntington (400) and the Town of Smithtown (800). Commack is not marked as a village, and Suffolk County's list of incorporated villages in the two towns does not include it.

So there is no Commack building department. Depending on the address, the starting point is either the Town of Huntington's Building & Housing Division or the Town of Smithtown's Building Department. The same table codes Fort Salonga to the same two towns, so the checks below apply there too.

A mailing name, ZIP code or school district does not show which town covers a house. For the general difference between towns, villages, hamlets and postal names, see the Suffolk County page.

Before any estimate

Find the town for your exact address

County and town offices publish tools that start from the property itself rather than the hamlet name. Suffolk County's Real Property Tax Service Agency says its Tax Map Division is the sole authority responsible for creating and maintaining the county's tax maps, and its page links a public tax map viewer. The Huntington tools below accept a property's Suffolk County Tax Map (SCTM) number as a search term.

  1. Find the property's SCTM number on your tax records, or look the parcel up in the county's public tax map viewer.
  2. Search the Town of Huntington's free public GIS map by address or tax map number. The town describes it as covering all properties in the Town of Huntington and showing special districts such as villages.
  3. Check the Town of Smithtown side as well: its Building Department page links the town's property tax lookup and a public zoning map application.
  4. Ask the building department of the town your results point to whether it covers the address, before relying on its forms, fees or records.
A map or tax record is a starting point, not a jurisdiction ruling. If the results disagree or are unclear, ask both towns. This page does not determine which town covers any address.

Huntington side or Smithtown side

What changes once you know the town

The two towns publish different filing and records routes. The table summarizes what each town's own pages say, as accessed on 2026-11-08; the town planning pages have more detail.

Commack: what each town publishes (not a permit determination)
TopicTown of HuntingtonTown of Smithtown
Building officeBuilding & Housing Division: reviews plans, issues building permits, inspects work and issues Certificates of OccupancyBuilding Department: issues permits for new construction, additions and alterations, inspects work in progress and issues certificates of occupancy
FilingApplications go through the town's online application portal; the town lists separate residential application types, says the application fee is non-refundable and requires a "Citizen Service" accountAn online residential permits page lists a set of projects that can be filed online, mostly outdoor and single-trade work; a combined kitchen, bathroom or multi-room interior is not named
Past permitsA Site History Summary search by SCTM number or address, which the town says identifies current permit applications and lists available data for older permits and Zoning Board of Appeals decisionsThe department says its transactions are kept on permanent record, and links a Freedom of Information Law (FOIL) form for public access to records
More detailHuntington planning pageSmithtown planning page
Which application, if any, a particular kitchen or bathroom scope needs is for the department that covers the house to decide. Do not pay a fee or pick an application type until the town is confirmed.

Then write the kitchen brief

Once the town is known, the brief can be specific. Put the jurisdiction facts at the top so every bidder works from the same assumptions:

  • The exact address, the SCTM number, the town you confirmed and the date you checked
  • Which permits and certificates the town's records show for the house, and anything you know was changed since
  • The kitchen in three columns: keep, replace and investigate, as described in the kitchen layout and storage guide
  • Whether any bathroom or other room is part of the same project, and which rooms must stay usable during the work
  • Selections still undecided, with an allowance noted for each

Scope examples are on the kitchen remodeling, bathroom remodeling and whole-home renovation pages. The permits guide explains the town-and-village system in general, and the estimate comparison guide explains what to line up across proposals.

Permits

Who issues building permits

Commack is coded by the Suffolk County Clerk to both the Town of Huntington and the Town of Smithtown (Smithtown: https://www.smithtownny.gov/109/Building-Department). It is not an incorporated village. Which town covers a particular Commack address was not verified for any address; confirm it with the town for the exact property. This is not a permit determination.

Town of Huntington Building & Housing Division or Town of Smithtown Building Department, depending on the exact address

Sources

  1. Building & Housing, Town of Huntington (undated (page copyright 2026)). Accessed 2026-11-08.
  2. To Submit an Application for a Permit Online, Town of Huntington (undated (page copyright 2026)). Accessed 2026-11-08.
  3. Building Department, Town of Smithtown (undated (hours stated as of 2022-09-01)). Accessed 2026-11-08.
  4. Village Building Departments, Town of Smithtown. Accessed 2026-11-08.
  5. Online Residential Building Permits, Town of Smithtown. Accessed 2026-11-08.
  6. Town and District Codes, Suffolk County Clerk (undated (footer copyright 2020)). Accessed 2026-11-08.
  7. Towns and Villages, Suffolk County Government (undated (page copyright 2026)). Accessed 2026-11-08.
  8. Real Property Tax Service Agency, Suffolk County Government. Accessed 2026-11-08.
  9. Land Management, Town of Huntington. Accessed 2026-11-08.
  10. GIS, Town of Huntington, Land Management Division. Accessed 2026-11-08.
  11. Site History Summary (Search), Town of Huntington. Accessed 2026-11-08.

Questions

Common questions

My address says Commack. Which town is the house in?
It could be either. The County Clerk codes Commack to both the Town of Huntington and the Town of Smithtown. Use the property's tax map record and the towns' lookup tools, then confirm with the town.
Is there a Commack village building department?
No village by that name is listed. Commack is a hamlet, so the building department is the town's, Huntington or Smithtown depending on the address.
Can I use the Huntington process if I am not sure?
Not safely. Huntington says its application fee is non-refundable, and the Smithtown process is different. Confirm the town first.
Are Commack projects being accepted?
Not through this preview. Coverage, credentials and launch approval remain pending.

General planning information, not a permit determination for any property. Back to Suffolk County.

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