The Assessor’s office is responsible for the maintenance of records on the ownership of properties. Assessments are computed at 70% of the estimated market value of real property at the time of the last revaluation which was 2023.
Information on the Property Records for the Municipality of New Canaan was last updated on 5/22/2025.
Property Summary Information
Parcel Data And Values
Building
Building 1
Sales
Parcel Information
Location:
42 SIWANOY LA
Property Use:
Residential
Primary Use:
Residential
Unique ID:
11982
Map Block Lot:
32 41 59
Acres:
1.0400
490 Acres:
0.00
Zone:
1AC
Volume / Page:
1098/1045
Developers Map / Lot:
3517
Census:
00352
Value Information
Appraised Value
Assessed Value
Land
680,000
476,000
Buildings
558,700
391,090
Detached Outbuildings
0
0
Total
1,238,700
867,090
Owner's Information
Owner's Data
XIRINACHS MATTHEW
MALAVET KATHERINE
42 SIWANOY LA
NEW CANAAN, CT 06840
Building 1
Building Use:
Single Family
Style:
Colonial
Living Area:
2,969
Stories:
2.00
Construction:
Wood Frame
Year Built:
1967
Total Rooms:
8
Bedrooms:
4
Full Baths:
2
Half Baths:
1
Fireplaces:
0
Heating:
Hot Water
Fuel:
Oil
Cooling Percent:
100
Basement Area:
1,484
Basement Finished Area:
0
Basement Garages:
0
Roof Material:
Asphalt
Siding:
Clapboards
Units:
Special Features
Fireplace
3
Gross Basement Area
1484
Attached Components
Type:
Year Built:
Area:
Frame Garage
1967
609
Open Porch
1967
70
Screen Porch
1967
256
Unfinished Attic
1967
1,334
Detached Outbuildings
Owner History - Sales
Owner Name
Volume
Page
Sale Date
Deed Type
Sale Price
XIRINACHS MATTHEW
1098
1045
04/17/2025
War Surv
$1,951,000
LALLY JANET LOU
0622
0252
01/16/2003
Certificate of Devise
$0
LALLY WILLIAM J JR - ESTATE OF
0527
0622
01/11/2000
Death Certificate
$0
LALLY WILLIAM J JR
0502
0299
11/03/1998
Quit Claim
$0
LALLY WILLIAM J JR
0206
0647
12/01/1970
Warranty Deed
$87,500
Building Permits
Permit Number
Permit Type
Date Opened
Reason
GIS Map
Google Map
Unique Id:
Location:
MBL:
Primary Use:
Zone:
Acres:
Appraised Value:
Assessed Value:
Back To Search
Print View
