45 Carlton St, Brookline, MA 02446 Property Records

Norfolk County and Brookline Town property record for 45 Carlton St, Brookline, MA 02446

Property Summary

Property Type	Apartments (5+ Units)
Details	9 bd · 9 ba · 6,040 sqft · built 1900
Lot Size	0.097 acres (4,225 sqft)
Owner	Company Name on File
Last Sale	$5,200,000 (Apr 2025)
Tax Bill	$43,494 (2026)
Deeds & Mortgages	May 2018 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`4243019`

Property Details

APN / Parcel Number

Primary APN	`4243019`
Alternative APN	`BROO B:112 L:0005 S:0000`

Interior

Bedrooms	9 Beds
Full Baths	9 Baths
Total Rooms	27 Rooms
Units	9 Units
Stories	4 Stories
Building Area	6,040 sqft Living Area
Gross Area	7,540 sqft
Basement Area	1,550 sqft
Unfinished Basement	775 sqft

Exterior

Year Built	Built 1900
Effective Year Built	Effective 1970
Architectural Style	Other
Exterior Material	Brick
Construction Type	Masonry / Concrete Block
Roof Type	Flat
Roof Material	Other
Lot Area	4,225 sqft (0.097 acres)

Utilities, Heating & Cooling

Heating System	Hot Water
Heating Fuel	Oil

Location & Zoning

Account Number	4243019
Street Address	45 CARLTON ST
City	BROOKLINE
State	MA
Zip	02446-5683
Property Category	Residential
Property Type	Residential > Multi-Unit > Apartments (5+ Units)
Local Zoning Code	M20
Legal Block	112
Legal Lot Number	5
Jurisdiction	BROOKLINE MA
Township / Civil Division	BROOKLINE
Census Block Group	2
Census Block	2000
Census Tract	400100

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Historic District	Within the Longwood Historic District listed 1978 · 61 contributing resources · NRIS 78000460

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

Owner

45 Carlton St, a residential property, is owned by a company that bought it in April 2025.

Source: Norfolk County and Brookline Town records, as of October 20, 2026

Owner of Record	Company Name on File
Mailing Address	45 CARLTON ST, BROOKLINE, MA 02446-5683
Owner Type	Company
Vesting	Company

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 10, 2025 · Amount on File
Deed Sale	Apr 10, 2025 · Amount on File
Prior Sale	Jan 28, 2016 · Amount on File
Deed Book / Page	42336 / 199
Prior Transfer Date	Apr 7, 2025
Prior Transfer Doc	042336-196
Record Updated	Oct 29, 2026

May 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BROOKLINE MA
Property Address	45 CARLTON ST, BROOKLINE, MA 02446-5683
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	35987-128
Date	May 16, 2018
Book Page	35987/128
Instrument	38857

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

Amount	Amount on Record

Tax Assessment & Valuation

The 2026 property tax bill for 45 Carlton St was $43,494, up 16.3% from the year before.

Source: Norfolk County and Brookline Town assessment roll, as of April 14, 2026

Property Jurisdictions

Type	Name
State	Massachusetts
County	Norfolk County
County Subdivision	Brookline Town
Unified School District	Brookline School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026	$43,494.00 (+16.33%)	$4,247,500 (+12.12%) Land $1,343,200 Building $2,868,600
2025	$37,390.00 (+8.58%)	$3,788,200 (+7.48%) Land $1,316,900 Building $2,471,300
2024	$34,436.00 (+1.14%)	$3,524,700 (+3.22%) Land $1,316,900 Building $2,207,800
2023	$34,047.00	$3,414,900 Land $1,754,300 Building $1,660,600

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 45 Carlton St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

Source: FEMA National Flood Hazard Layer, effective May 26, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File median of 11 policies
Nearby Flood Policies	11 in force
Nearby Flood Claims	4 (1982–1998)
Claims Outside the SFHA	3 of 4
Most Recent Claim	Jun 1998 · Heavy Rains And Flooding

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

The area around 45 Carlton St has no burnable land within ember reach, so its wildfire risk is not rated.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	BROOKLINE WATER AND SEWER DIVISION serves 63,191 people · EPA ID MA3046000
Water Source	Purchased surface water from MWRA
Last State Inspection	Apr 2026
Lead	1 ppb (2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 299 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 2,000
Astound Broadband Cable	1,500 / 50
Verizon Fixed Wireless · Fiber in parts of the area	1,000 / 75
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Starry.

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