643 Main St, Chatham, MA 02633 Property Records

Barnstable County and Chatham Town property record for 643 Main St, Chatham, MA 02633

Property Summary

Property Type	Condominium Offices
Details	908 sqft · built 1960
Owner	Company Name on Record
Last Sale	$3,000,000 (Aug 2022)
Tax Bill	$1,827 (2025)
Deeds & Mortgages	Aug 2022 Sale
Flood Zone	Zone X (moderate risk)
APN	`13344`

Property Details

APN / Parcel Number

Primary APN	`13344`
Alternative APN	`CHAT M:14E B:0002 L:X50`

Interior

Stories	1 Story
Building Area	908 sqft Total Area

Exterior

Year Built	Built 1960
Effective Year Built	Effective 1978
Architectural Style	Condo/Apartment

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Forced Air with A/C
Heating Fuel	Gas

Location & Zoning

Account Number	13344
Street Address	643 MAIN ST
City	CHATHAM
State	MA
Zip	02633-2233
Property Category	Commercial
Property Type	Commercial > Office > Condominium Offices
Legal Block	2
Legal Lot Number	X50
Jurisdiction	CHATHAM MA
Township / Civil Division	CHATHAM
Census Block Group	2
Census Block	2014
Census Tract	10700

Owner

Source: Barnstable County and Chatham Town records, as of July 31, 2026

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

Owner of Record	Company Name on Record
Mailing Address	PO BOX 128, SOUTH HARWICH, MA 02661-0128
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 1, 2022 · Amount on Record
Deed Sale	Aug 1, 2022 · Amount on Record
Deed Document Number	202238911
Deed Book / Page	35283 / 313
Record Updated	Sep 20, 2026

August 2022: Condominium Deed, Transfer

Document Type	Condominium Deed
Jurisdiction	CHATHAM MA
Recording Date	Aug 1, 2022
Property Address	643 MAIN ST, CHATHAM, MA 02633-2233
Document Number	035283-313
Book / Page	35283 / 313
Instrument Date	Aug 1, 2022
Instrument	38911
Transaction Type	Transfer
Record Updated	Jan 16, 2023

Transaction

Amount	Amount Recorded
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	PO BOX 128, SOUTH HARWICH, MA 02661-0128
Investor	Possibly a Property Investor

Tax Assessment & Valuation

Source: Barnstable County and Chatham Town assessment roll, as of May 27, 2026

Property Jurisdictions

Type	Name
State	Massachusetts
County	Barnstable County
County Subdivision	Chatham Town
Unified School District	Monomoy Regional School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2025	$1,827.00 (+6.53%)	$526,500 (+9.62%) Building $526,500
2024	$1,715.00 (+10.43%)	$480,300 (+19.99%) Building $480,300
2023	$1,553.00	$400,300 Building $400,300

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective October 1, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 155 individual policies
Community Rating System	Class 7 (15% premium discount)
Nearby Flood Policies	169 units insured incl. 14 condo units
Nearby Flood Claims	76 (1988–2023)
Claims Outside the SFHA	26 of 76
Most Recent Claim	Dec 2023 · tidal / storm surge
Claims by Event	Severe Winter Storm And Flooding, Mar 2018 · 4 claims Blizzards, High Winds & Record Snowfall, Mar 1993 · 4 claims Coastal Storm, Oct 1991 · 34 claims

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

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	CHATHAM WATER DEPARTMENT serves 30,000 people · EPA ID MA4055000
Water Source	Groundwater
Last State Inspection	Apr 2023
Lead	1 ppb (2026) 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 268 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 2,000
Verizon Fixed Wireless	300 / 20
AT&T Fixed Wireless	100 / 20
T-Mobile Fixed Wireless	100 / 20