18 Roy Mountain Rd, Prospect — property record card

Residential built in 1993, 3 bed, 3.5 bath, 3,721 ft² in Prospect, appraised at $620,400 (assessed $434,280); last sold for $489,900 on March 31, 2025.

Rebuilt from the public Connecticut CAMA and Parcel Layer — not the official card. For the official card, with owner, photo and sketch, ask the Prospect assessor’s office.

Parcel

Location	18 Roy Mountain Rd, Prospect CT 67121699
Parcel ID	116 128 18
CAMA account	62290-H0129500
Use	Residential (state use code 100)
Zone	RA-1
Planning region	Naugatuck Valley

Valuation — revaluation 2026

Appraised (market value)	$620,400 land $131,300 · building $489,100
Assessed (70%)	$434,280 land $91,910

Land

Lot size	1.00 acres (43,560 ft²)

Building

Year built	1993 (effective 2018)
Living area	3,721 ft²
Rooms	9
Bedrooms	3
Bathrooms	3 full, 1 half
Condition	5

Sales

Last sale	$489,900 — March 31, 2025

What this means

Connecticut taxes property at 70% of its appraised market value: the assessment $434,280 times the town mill rate gives the yearly tax.
Prospect last revalued in 2026. Towns revalue every five years; between two revaluations the appraisal stays the same even if the market moves.
Assessed 63% above the median for this use in Prospect ($266,455, 3,656 parcels).
The last sale price is 21% below the appraisal.

Point at the centre of the parcel — not a survey.

Data: Connecticut CAMA and Parcel Layer (2026 collection, CC0), retrieved October 31, 2026. Sources and freshness. No owner names are published.

First page of a sample Connecticut Property Report

The report for 18 Roy Mountain Rd

This card shows what the assessor records. The report adds what lies around the parcel: FEMA flood zone, wetlands and watercourses, aquifer protection area, Natural Diversity Database areas, brownfields nearby and sewer service.

$19card · PDF within 24 h · you pay after receiving itSee the sample (PDF)

Order the report