11 Carlton St, Brookline, MA 02446 Property Records

Norfolk County and Brookline Town property record for 11 Carlton St, Brookline, MA 02446

Property Summary

Property Type	Single Family Home
Details	5 bd · 4 ba · 4,442 sqft · built 1870
Lot Size	0.15 acres (6,551 sqft)
Owner	2 Individual Names on File
Last Sale	$3,525,000 (Apr 2023)
Tax Bill	$35,283 (2026)
Deeds & Mortgages	Apr 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`4316015`

Property Details

APN / Parcel Number

Primary APN	`4316015`
Alternative APN	`BROO B:114 L:0001 S:0002`

Interior

Bedrooms	5 Beds
Full Baths	4 Baths
Half Baths	2 Half Baths
Total Rooms	11 Rooms
Stories	3 Stories
Building Area	4,442 sqft Living Area
Gross Area	6,548 sqft
Basement Area	1,695 sqft
Unfinished Basement	1,492 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1870
Effective Year Built	Effective 1976
Architectural Style	Duplex Single
Exterior Material	Brick
Construction Type	Frame
Roof Type	Mansard
Roof Material	Asphalt
Lot Area	6,551 sqft (0.15 acres)

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Hot Water
Heating Fuel	Gas

Location & Zoning

Account Number	4316015
Street Address	11 CARLTON ST
City	BROOKLINE
State	MA
Zip	02446-5601
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	T-5
Legal Block	114
Legal Lot Number	1
Jurisdiction	BROOKLINE MA
Township / Civil Division	BROOKLINE
Census Block Group	2
Census Block	2005
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

11 Carlton St is owned and occupied by two individuals who bought it in April 2023.

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

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

Owner of Record	2 Individual Names on File
Mailing Address	11 CARLTON ST, BROOKLINE, MA 02446-5601
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Husband and Wife

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 14, 2023 · Amount on File
Deed Sale	Apr 14, 2023 · Amount on File
Prior Sale	Dec 21, 1998 · Amount on File
Deed Document Number	202321585
Deed Book / Page	41143 / 513
Record Updated	Oct 29, 2026

April 2023: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	BROOKLINE MA
Recording Date	Apr 14, 2023
Property Address	11 CARLTON ST, BROOKLINE, MA 02446-5601
Document Number	041143-513
Book / Page	41143 / 513
Instrument Date	Apr 14, 2023
Instrument	21585
Transaction Type	Transfer
Record Updated	Apr 28, 2023

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants by the Entirety
Address	11 CARLTON ST, BROOKLINE, MA 02446-5601

Mortgage

Document Number	0000021586
Date	Apr 14, 2023
Instrument	21586

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount on Record

Interest

Rate Type	Adjustable Rate
Rate	4.65%
Type Change Date	May 1, 2030
Max Rate At Change	2.5%
Index	1-Year CMT

Tax Assessment & Valuation

The 2026 property tax bill for 11 Carlton St was $35,283, up 8.9% 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	Assessed Market Value
2026	$35,283.00 (+8.89%)	$3,445,600 (+4.95%) Land $1,763,900 Building $1,680,500	$3,249,413
2025	$32,403.00 (+5.07%)	$3,283,000 (+4.01%) Land $1,746,500 Building $1,536,500
2024	$30,839.00 (+5.91%)	$3,156,500 (+8.07%) Land $1,679,200 Building $1,477,300
2023	$29,119.00	$2,920,700 Land $1,399,800 Building $1,520,900

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

Flood

FEMA maps place 11 Carlton St in Zone X, an area of minimal flood risk, within 100 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 100 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 11 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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