21 Williams St, Ayer, MA 01432 Property Records

Middlesex County and Ayer Town property record for 21 Williams St, Ayer, MA 01432 · Last verified July 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	3 Beds
Bathrooms	1.5 Baths
Year Built	Built 1988
Square Footage	1,954 sqft Living Area
Lot Size	9,148 sqft (0.21 acres)
Occupancy	Owner Occupied
Last Sale	$250,000 (2015)
Tax Bill	$5,197.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`AYER M:026 B:0000 L:0262`

Interior

Bedrooms	3 Beds
Full Baths	1.5 Baths
Partial Baths	1 Partial Baths
Total Rooms	7 Rooms
Building Area	1,954 sqft Living Area
Basement Area	1,131 sqft Basement
Unfinished Basement	1,131 sqft Unfinished
Stories	2 Stories
Fireplace	Fireplace
Fireplaces	1 Fireplaces

Exterior

Year Built	Built 1900
Effective Year Built	Effective 1988
Architectural Style	Conventional Style
Exterior Material	Wood Siding Exterior
Construction Type	Stone Construction
Roof Construction	Gable Roof Construction
Roof Material	Asphalt Roof
Lot Area	9,148 sqft (0.21 acres)

Utilities and HVAC

Heating System	Forced Air with Air Conditioning Heating
Heating Fuel	Oil Heating Fuel

Location & Zoning

Street Address	21 WILLIAMS ST
City	AYER
State	MA
Zip	01432-1350
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Lot Number	262
Jurisdiction	AYER MA
Minor Civil Division	AYER
Census Blockgroup	3
Census Block	3001
Census Tract	325102

Owner

Source: Middlesex County and Ayer Town records · APN AYER M:026 B:0000 L:0262

Assessment roll updated April 14, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on File
Mailing Address	21 WILLIAMS ST, AYER, MA 01432-1350
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Known Transactions	Last Sale Amount on May 22, 2015 Deed Sale Price on May 22, 2015
Deed Book / Page	65411 / 472
Record Refreshed	Sep 20, 2026

June 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	AYER MA
Property Address	21 WILLIAMS ST, AYER, MA 01432-1350
Transaction Type	Mortgage
Record Updated	Feb 05, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	74853-126
Date	Jun 10, 2020
Book Page	74853/126
Instrument	89390

Lender

Name	NEWREZ LLC

Agreement

Type	Stand Alone Refinance
Amount	Amount Recorded
Term	361 Months
Due	Jul 01, 2050

Tax Assessment & Valuation

Source: Middlesex County and Ayer Town records · Assessment roll updated April 14, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	Massachusetts
County	Middlesex County
County Subdivision	Ayer Town
Unified School District	Ayer-Shirley School District (PK - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$5,197.00 (+16.11%)	$434,500 (+20.56%) Land $138,200 Building $296,300	$493,240 (+1.17%)
2024			$487,540
2023	$4,476.00	$360,400 Land $129,500 Building $230,900