How An Effective Short Term Rental (STR) Registry Can Root Out Property Tax Fraud

By New York State Association of Counties - May 01, 2026

NYSAC Blog

By Deckard Technologies

Picture this in a New York community: a property owner claims a STAR tax exemption, securing valuable school tax relief meant specifically for primary residents. Yet, at the exact same time, that property owner is actively marketing and booking that very same property to tourists as a full-time short term rental business.
Our team recently worked with a New York county to uncover this exact situation during a weekly check-in meeting—another benefit of implementing an effective STR registry.

For context, the STAR program provides crucial tax relief to eligible homeowners and is strictly intended for a taxpayer’s primary residence. When a property operates as an STR, local officials need a reliable way to review and determine whether it should receive a STAR exemption.

This is where our team stepped in to help. Rather than just pointing out an unregistered rental, we worked with the county to connect compliance signals that typically sit in entirely separate municipal silos. By identifying these overlaps, we help jurisdictions move from reactive enforcement to proactive, data driven oversight, supporting fair taxation, better interdepartmental collaboration, and a level playing field at the neighborhood level.

The Silent Drain on Tax Relief and Housing Programs

The misallocation of primary residency benefits goes beyond tax exemptions; it threatens vital housing affordability programs.

Consider the reality of housing assistance today: demand is overwhelming, and public funds are finite. Recently, a city opened its homeowner repair grant list for the year. It closed just 10 minutes later.

Unfortunately, a growing threat is quietly draining these finite resources: homestead and exemption fraud.
The problem is straightforward. Tax relief programs and housing grants require primary residency. But as STR platforms offer lucrative returns, some investors and property owners are securing these government grants or tax breaks, only to immediately convert these subsidized homes into full time rentals. At the scale of municipal, state, and federal programs, hundreds of millions in legitimate tax dollars may be subsidizing illegal commercial STR operations.

How Rentalscape Closes the Gap

Traditional compliance tools identify an illegal rental and stop there. Rentalscape, our STR compliance platform, goes further. By layering real time STR activity over tax filings, grant recipient lists, and municipal records, the platform surfaces a full picture for local leaders who want to better understand their housing environment.

It answers the critical questions that protect public funds:

Is there a STAR or tax exemption claimed on a property that is actively marketed to tourists 300 nights a year?
Has a property subsidized by a municipal repair grant been converted into a full time rental after closing?
Is the individual claiming the benefit actually living in the home?

That first question is exactly what our team helped surface during the New York check-in meeting. Just one data connection exposed significant fiscal vulnerability.

The Fraudsters Greatest Ally is the Data Gap

When tax assessor records do not talk to code enforcement or grant databases, violations go unnoticed for years. Property owners collect tax relief meant for working families while operating commercial mini hotels.

Rentalscape eliminates that blind spot. By breaking down data silos, we provide the court with defensible evidence jurisdictions need to review exemptions, trigger clawback provisions, and recover misappropriated funds.

Housing affordability and fair taxation start with protecting the programs designed to support them. Rentalscape is how you do that.