18 Mayo Ave, Greenwich, CT 06830 Property Records

Greenwich Town property record for 18 Mayo Ave, Greenwich, CT 06830

Property Summary

Property Type	Single Family Home
Details	5 bd · 6.5 ba · 5,664 sqft · built 2008
Lot Size	0.9 acres (39,204 sqft)
Owner	2 Individual Names on File
Last Sale	$13,500,000 (Jun 2023)
Tax Bill	$74,523 (2026)
Deeds & Mortgages	Jun 2023 Sale & Mortgage Nov 2021 Refinance
Flood Zone	Zone X (minimal risk)
APN	`02-1492S`

Property Details

APN / Parcel Number

Primary APN	`02-1492S`
Alternative APNs	`GREE M:02 B:1492/S` `252/038`

Interior

Bedrooms	5 Beds
Full Baths	6.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	5,664 sqft Living Area
Basement Area	2,994 sqft
Unfinished Basement	2,994 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2008
Effective Year Built	Effective 2008
Architectural Style	Colonial
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	39,204 sqft (0.9 acres)
Garage Type	Basement
Parking Spaces	2 Parking Spaces
Pool Type	Pool with Hot Tub/Spa
Deck Area	Deck Area

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	252/038
Street Address	18 MAYO AVE
City	GREENWICH
State	CT
Zip	06830-7021
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RA-1
Legal Block	1492/S
Jurisdiction	GREENWICH CT
Township / Civil Division	GREENWICH
Census Block Group	2
Census Block	2006
Census Tract	11200

Owner

18 Mayo Ave is owned and occupied by two individuals who bought it in June 2023.

Source: Greenwich Town records, as of October 21, 2026

Owner of Record	2 Individual Names on File
Mailing Address	18 MAYO AVE, GREENWICH, CT 06830-7021
Occupancy	Owner Occupied
Owner Type	Individual

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

Date	Document
Jun 5, 2023	Warranty Deed, Transfer · Stand-Alone First Mortgage JPMORGAN CHASE BANK NA
Nov 15, 2021	Deed of Trust, Mortgage · Stand-Alone Refinance BANK OF AMERICA NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 5, 2023 · Amount on File
Deed Sale	Jun 5, 2023 · Amount on File
Prior Sale	Apr 3, 2007 · Amount on File
Deed Document Number	20233309
Deed Book / Page	8226 / 53
Record Updated	Oct 29, 2026

June 2023: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GREENWICH CT
Recording Date	Jun 5, 2023
Property Address	18 MAYO AVE, GREENWICH, CT 06830-7021
Document Number	0008226-53
Book / Page	8226 / 53
Instrument Date	Jun 5, 2023
Instrument	3309
Transaction Type	Transfer
Record Updated	Jun 22, 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 in Common
Address	18 MAYO AVE, GREENWICH, CT 06830-7021
Investor	Possibly a Property Investor

Mortgage

Document Number	0000003310
Date	Jun 5, 2023
Instrument	3310

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount on Record

Interest

Rate Type	Adjustable Rate
Rate	5.63%
Type Change Date	Jul 1, 2033
Max Rate At Change	2.75%
Index	Other

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	GREENWICH CT
Property Address	18 MAYO AVE, GREENWICH, CT 06830-7021
Transaction Type	Mortgage
Record Updated	Dec 2, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	8009-320
Date	Nov 15, 2021
Book Page	8009/320
Instrument	12793

Lender

Name	BANK OF AMERICA NA
Type	Bank

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record
Term	361 Months
Due	Dec 1, 2051

Tax Assessment & Valuation

The 2026 property tax bill for 18 Mayo Ave was $74,523, up 36% from the year before.

Source: Greenwich Town assessment roll, as of June 25, 2026

Property Jurisdictions

Type	Name
State	Connecticut
County Subdivision	Greenwich Town
Unified School District	Greenwich School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$74,523.00 (+35.96%)	$7,108,290 (+60.28%) Land $3,160,920 Building $3,947,370	$7,313,167 (+135.57%)
2025	$54,811.00	$4,434,920 Land $2,478,350 Building $1,956,570	$3,104,444 Land $1,734,845 Building $1,369,599
2024	$54,811.00 (+6.21%)
2023	$51,605.00 (+0.92%)	$4,434,920 (-) Land $2,478,350 Building $1,956,570
2022	$51,135.00	$4,434,920 Land $2,478,350 Building $1,956,570

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Flood

FEMA maps place 18 Mayo Ave in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective November 28, 2025

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Wildfire risk around 18 Mayo Ave is low, with less than a 0.01% annual chance of wildfire.

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

Wildfire Risk	Low lower than 98% of the US · lower than 97.2% of Connecticut
Wildfire Likelihood	Under 0.01% annual chance
Exposure	Direct burnable vegetation

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	AQUARION-EASTERN FAIRFIELD COUNTY private · serves 351,756 people · EPA ID CT0150011
Water Source	Surface water
Last State Inspection	Jun 2025
Lead	Under 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	24 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 120 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Optimum Cable · Fiber in parts of the area	940 / 35
T-Mobile Fixed Wireless	100 / 20

May also be available: Verizon.

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