20 Union Street, Nantucket, MA 02554

20 Union Street Nantucket MA 02554
Click to view the Official Assessors Field Card Print Report
Owner Information
Owner 1
Margaret B Ruttenberg & John C
Owner 2
C/O Tinicum Enterprises
Owner's Address
990 Stewart Ave, Fifth Flr Garden City, NY 11530
Market Sale Information
Most recent sale date
10/21/1997
Previous sale date
10/21/1997
Transfer document #
00550-0277
Previous transfer document
00550-0275
Grantor
Margaret B Ruttenberg
Previous grantor
Cartwright Intermediary Inc
Most recent sale price
$840,000.00
Previous sale price
$420,000.00
Site Information
Property ID
4232-75
Lot Size
0.29
Use Code
109 - Multiple Houses on one parcel
Zoning
ROH
Building Style
Antique
Number of Rooms
Stories
2.5
Number of Beds
4
Year Built
1830
Number of full baths
3
Condition
Number of half baths
1
Finished Area
4997
Number of Kitchen
1
Gross Living Area
7449
Number of Fireplaces
Bsmnt floot
Number of parking
Interior walls
Plastered
Floor type
Pine/Soft Wood
Solar Hot Water
No
Roof Structure
Gable/Hip
Heating type
Gas
Roof Cover
Asph/F Gls/Cmp
Heating fuel
Forced Air-Duc
Frame type
Air Condition (%)
Sidings
Clapboard
Assessment Information
Fiscal Year
2025
Land Value
$2,226,200.00
Total value
$6,106,700.00
Building value
$3,880,500.00
Estimated tax
$20,029.00
Yard improvement value
$0.00
Flood Map MassMapper Google Street View
Certified Mass Appraisal
20082009201020112012201320142015201620172018201920202021202220232024$0$1,000,000$2,000,000$3,000,000$4,000,000$5,000,000$6,000,000$7,000,000Total Assessment ($)ImprovementsLandBuildingTotal Assessment
Comparable Properties
Mailing Labels $Valuation Report
39 Orange Street20 Union Street7 Pleasant Street$0$1,000,000$2,000,000$3,000,000$4,000,000$5,000,000$6,000,000$7,000,000$8,000,000$9,000,000Subject PropertyTotal Assessment ($)Total Assessment
Address 20 Union Street A) 39 Orange StreetB) 7 Pleasant Street
Photo
Plan
Map
Proximity 0.10.3
Last Sold 2/26/20252/25/2025
Price $11,000,000$12,300,000
Net Living Area 4,9085,722
Stories 1.752.5
Sale Price/sft $168.10$2241.24$2149.60
Style AntiqueAntiqueAntique
Age 183018301822
Rooms
Bedrooms 475
Full baths 377
Half baths 1
Gross Living Area 744980759132
Heating Fuel Forced Air-DucForced Air-DucHot Water
Detached Garage
Lot Size 0.290.20.3
Roof Cover Asph/F Gls/CmpAsph/F Gls/CmpAsph/F Gls/Cmp
AEM Value - Building $3,880,500.00$3,418,200$5,455,900
AEM Value - Land $2,226,200.00$1,936,800$2,228,900
AEM Value - Other $0.00$0$0
AEM Value - Total $6,106,700.00$5,355,000$7,684,800
# Address Last Sold Sale Price Dist(m) Style LA (sq ft) Lot(ac) BR F-HB
@ 20 Union Street 10/21/1997 $840,000 0 Antique 4,997 0.29 4 3-1 -
  Criteria
A 39 Orange Street 2/26/2025 $11,000,000 0.1 Antique 4,908 0.2 7 7-
B 7 Pleasant Street 2/25/2025 $12,300,000 0.3 Antique 5,722 0.3 5 7-
Averages 33 days $11,650,000 0.18 --- 5,315 0.25 --- ---  

Estimation of Market Value - $10,932,326

As of today, 03/30/2025, the estimated market value of 20 Union Street, Nantucket considering the above 2 comparable properties is $10,932,326.

 

In estimating the current market value, RealtyInSite follows the sales comparison (market) approach which is an approach based on the principles of supply and demand (principle of change) and the principle of substitution. The principle of substitution assumes that a prudent person will pay no more for a property than it would cost to purchase a comparable substitute property.

 

Comparable sales data are applied to arrive at an estimate of value. By default, comparable properties are those properties located within 1 mile of the subject property that have sold within the last 6 months and have a similar size of living area. The table shown above lists the comparable properties that were considered. Note that which properties are considered comparables can be adjusted by varying the selection criteria or deleting non-representative properties.

Neighboring Properties
Mailing Labels
Subject Property0 New Whale Street39 Washington Street2 Stone AL12 Washington Street8 Union Street1 Stone AL8 Orange Street10 Washington Street10 Fair Street36 Washington Street38 Washington Street42 Washington Street40 Washington Street11 Washington Street8 Washington Street7 Salem Street32 Washington Street7 Union Street8 Fair Street13 Commercial Wharf5 Orange Street9 Union Street20 Union Street11 Orange Street10 Orange Street6 Orange Street34 Washington Street$0$5,000,000$10,000,000$15,000,000$20,000,000$25,000,000$30,000,000$35,000,000Total Assessment ($)Total Assessment
# Address Last Sold Sale Price Dist(m) Style LA (sq ft) Lot(ac) BR F-HB
@ 20 Union Street 10/21/1997 $840,000 0 Antique 4,997 0.29 4 3-1 -
  Criteria
A 18 Union Street 12/6/2016 $3,835,000 0.0 Antique 3,060 0.1 6 6-
B 18 Coffin Street 10/7/2005 $1,925,000 0.0 Antique 2,910 0.11 3 4-
C 22 Union Street 8/27/2019 $0 0.0 Antique 3,711 0.35 5 5-
D 19 Union Street 8/16/2021 $0 0.0 Antique 4,104 0.12 5 4-3
E 16 Union Street 9/27/2022 $0 0.0 Antique 2,815 0.1 4 3-1
F 21 Union Street 1/20/2022 $1,912,500 0.0 Antique 2,494 0.12 4 2-1
G 17 Union Street 8/31/1984 $600,000 0.0 Antique 3,166 0.07 4 2-1
H 7 Coffin Street 3/25/2020 $1,650,000 0.0 Colonial 2,268 0.12 2 2-1
I 12 Coffin Street 11/5/2014 $3,525,000 0.0 Antique 3,578 0.48 4 3-1
J 10 Coffin Street 12/21/2011 $0 0.0 Cape Cod 1,310 0.12 3 2-
K 14 Union Street 5/7/2021 $1,408,000 0.0 Antique 2,264 0.09 5 2-
L 15 Union Street 10/13/2022 $0 0.0 Antique 2,821 0.08 4 4-1
M 23-B Union Street 5/23/2016 $0 0.0 Colonial 3,305 0.12 5 5-1
N 24 Union Street-Lot 177 5/13/2021 $1,630,000 0.0 Family Conver. 2,028 0.06 2 3-
O 9 Coffin Street 11/26/2019 $750,000 0.0 Bungalow 1,151 0.19 1 1-
P 25-R Washington Street $0 0.0 Vacant Land 0.04 -
Q 24 Union Street 10/26/1998 $1,100,000 0.0 Colonial 2,648 0.12 4 3-1
R 8 Coffin Street 3/12/2018 $0 0.0 Bungalow 476 0.21 1 1-
S 23-A Union Street 3/23/2016 $2,600,000 0.0 Colonial 3,305 0.12 5 5-1
T 13 Union Street 10/1/2018 $1,700,000 0.0 Antique 4,890 0.11 5 6-1
U 33-C Washington Street 6/15/2010 $0 0.0 Antique 2,149 0.18 4 3-
V 26 Orange Street 1/15/2009 $5,750,000 0.0 Antique 3,470 0.21 4 5-1
W 10 Union Street 9/4/2020 $3,850,000 0.0 Antique 2,737 0.28 5 4-
X 28 Orange Street 10/3/2022 $9,325,000 0.0 Antique 4,179 0.18 5 6-
Y 3 Coffin Street $82,800 0.0 Colonial 1,380 0.03 4 2-
Z 20 Orange Street 12/5/2020 $5,495,000 0.0 Antique 3,019 0.18 3 5-1
- 5 Coffin Street 10/23/2009 $0 0.0 Vacant Land 0.03 -
- 23 Union Street 10/17/2014 $1,350,000 0.1 Antique 2,367 0.1 4 3-
- 26 Union Street 10/23/2015 $3,475,000 0.1 Antique 3,237 0.15 4 3-2
- 29 Washington Street 10/2/2018 $1,350,000 0.1 Cape Cod 2,288 0.12 4 3-
- 30 Orange Street 11/12/2020 $10,750,000 0.1 Mansion 6,851 0.29 5 8-2
- 18 Orange Street 2/21/2012 $5,500,000 0.1 Antique 3,218 0.24 5 3-2
- 33-B Washington Street 9/15/2020 $2,150,000 0.1 Custom Built 1,695 0.18 2 2-
- 22 Orange Street 1/17/2019 $5,195,000 0.1 Antique 3,662 0.12 5 5-1
- 17-A Washington Street 10/17/2005 $1,400,000 0.1 Cottage 543 0.07 1 1-
- 27 Washington Street 7/15/1993 $0 0.1 Cottage 441 0.32 1 1-
- 6 Coffin Street 12/12/2002 $0 0.1 Aptovrret/Off 2,562 0.11 1 2-
- 11 Union Street 4/6/2018 $2,222,000 0.1 Antique 2,008 0.05 4 4-1
- 25-B Washington Street 8/15/2019 $0 0.1 Aptovrret/Off 1,695 0.11 1 2-
- 21 Washington Street $0 0.1 Clubs/Lodges 7,084 0.12 0 2-
- 16 Orange Street 9/6/2017 $6,400,000 0.1 Antique 4,110 0.11 5 3-4
- 25 Union Street 8/19/2024 $2,365,000 0.1 Antique 3,537 0.14 5 2-1
- 23 Washington Street 8/4/1986 $0 0.1 Restaurant 3,632 0.11 0 2-
- 25-C Washington Street 6/25/2021 $2,410,000 0.1 Colonial 1,782 0.11 3 2-1
- 19 Washington Street 2/27/1996 $170,000 0.1 Store 1,850 0.03 0 0-
- 15 Washington Street 12/15/2020 $1,700,000 0.1 Store 1,136 0.07 0 0-
- 14-R Orange Street 9/26/2002 $2,850,000 0.1 Antique 3,363 0.18 4 4-1
- 28 Union Street 12/21/2023 $3,645,000 0.1 Antique 3,038 0.1 5 3-1
- 17 Washington Street 2/16/2016 $800,000 0.1 Antique 1,456 0.05 3 1-1
- 30-A Orange Street 11/12/2020 $10,750,000 0.1 Outbuildings 0.12 -
- 31 Washington Street 11/17/2010 $1,725,000 0.1 Colonial 800 0.12 1 1-1
- 33 Washington Street 11/17/2010 $1,725,000 0.1 Conventional 1,929 0.28 3 2-
- 32 Orange Street 4/8/1996 $1,255,000 0.1 Colonial 4,578 0.15 3 5-
- 30 Union Street 10/8/2021 $4,600,000 0.1 Antique 4,010 0.26 4 5-
- 8 Union Street $0 0.1 Condominium 1,935 0 5 2-
- 11 Washington Street 6/3/2021 $3,400,000 0.1 Aptovrret/Off 2,662 0.07 1 1-1
- 9 Union Street 7/15/2021 $5,100,000 0.1 Antique 3,378 0.08 5 4-2
- 27 Union Street 12/19/2012 $0 0.1 Antique 3,139 0.08 5 5-1
- 2 Stone AL 11/2/2012 $1,600,000 0.1 Antique 997 0.17 2 1-1
- 14 Orange Street 12/21/2021 $0 0.1 Mansion 3,232 0.11 5 4-1
- 34 Orange Street 10/27/2005 $6,250,000 0.1 Antique 4,653 0.17 4 6-
- 31 Orange Street 12/19/2007 $0 0.1 Antique 3,227 0.11 4 4-
- 2 Commercial Street-Lot 94 $0 0.1 Vacant Land 0.01 -
- 2 Martins Lane 11/3/2010 $2,150,000 0.1 Antique 2,958 0.12 4 4-1
- 25 Orange Street 11/1/2016 $5,300,000 0.1 Antique 4,781 0.1 7 5-2
- 29 Orange Street-Lot 69 6/28/2013 $3,125,000 0.1 Vacant Land 0.01 -
- 35 Washington Street 3/5/2018 $2,585,000 0.1 Antique 1,800 0.22 3 2-1
- 36 Orange Street 3/27/2018 $8,000,000 0.1 Antique 3,619 0.22 6 5-2
- 33 Orange Street 12/27/2016 $1,550,000 0.1 Antique 3,771 0.09 3 4-1
- 12 Orange Street 11/6/2009 $4,250,000 0.1 Antique 3,529 0.1 6 4-1
- 2 Gorhams Court 11/28/1995 $1,055,000 0.1 Antique 4,182 0.26 5 4-
- 37 Orange Street 12/21/2012 $0 0.1 Antique 2,058 0.1 4 3-1
- 21 Orange Street 9/28/2022 $3,770,000 0.1 Town House 3,226 0.05 5 3-1
- 1 Stone AL 12/16/1999 $0 0.1 Family Conver. 3,627 0.13 5 2-
- 29 Union Street 4/16/2019 $2,381,450 0.1 Antique 2,534 0.12 4 4-1
- 12 Washington Street 7/22/2022 $4,750,000 0.1 Vacant Land 0.1 -
- 19 Orange Street 10/7/2020 $2,500,000 0.1 Town House 2,600 0.05 5 4-
- 7 Union Street 3/24/1998 $910,000 0.1 B+B/Inn 5,919 0.19 14 9-
- 3 Martins Lane 10/5/2020 $2,200,000 0.1 Custom Built 1,654 0.06 3 3-
- 32 Union Street 11/8/2024 $5,848,500 0.1 Antique 3,366 0.12 5 5-1
- 6 Martins Lane 10/29/2008 $1,565,000 0.1 Antique 2,964 0.15 3 3-1
- 17 Orange Street 10/21/2022 $2,300,000 0.1 Town House 3,350 0.05 5 3-
- 1 Candle Street $0 0.1 Vacant Land 0.2 -
- 10 Orange Street 5/29/2014 $5,150,000 0.1 Antique 4,531 0.15 5 6-1
- 16-R Fair Street $0 0.1 Vacant Land 0.06 -
- 15 Orange Street 12/5/2022 $0 0.1 Town House 3,249 0.05 5 3-1
- 4 Commercial Street $0 0.1 Vacant Land 0.03 -
- 38 Orange Street 10/29/2013 $0 0.1 Antique 5,801 0.13 7 6-3
- 10 Washington Street 7/22/2022 $4,750,000 0.1 Store 2,040 0.12 3-
- 26 Washington Street 7/16/2014 $3,900,000 0.1 Aptovrret/Off 3,180 0.19 2 2-
- 24 Washington Street 9/15/2006 $10,150,000 0.1 Family Duplex 2,914 0.15 2 1-
- 28 Washington Street 11/17/2010 $3,450,000 0.1 Commercial 492 0.13 0 1-
- 0 Washington Street $0 0.1 Vacant Land 1.84 -
- 0 Washington Street 7/31/1996 $2,750,000 0.1 Vacant Land 0.04 -
- 5 Martins Lane 12/23/2021 $1,700,000 0.1 Antique 1,211 0.05 3 2-
- 30-A Washington Street 11/17/2010 $1,725,000 0.1 Vacant Land 0.13 -
- 1 Plumb Lane 2/27/1992 $330,000 0.1 Antique 1,864 0.08 3 2-
- 13 Orange Street 2/2/2015 $407,007 0.1 Antique 3,390 0.14 6 3-1
- 8 Orange Street $0 0.1 Antique 2,420 0.05 4 2-
- 6 Union Street 3/10/1999 $1,650,000 0.1 Aptovrret/Off 6,608 0.18 5 9-
- 34 Union Street 5/18/2018 $0 0.1 Conventional 1,897 0.18 3 2-1
- 31 Union Street 12/29/2015 $0 0.1 Antique 2,583 0.11 4 3-
- 39 Orange Street 2/26/2025 $11,000,000 0.1 Antique 4,908 0.2 7 7-
- 30-B Washington Street 11/17/2010 $1,725,000 0.1 Vacant Land 0.17 -
- 1 Gorhams Court 7/16/2010 $4,637,500 0.1 Antique 3,023 0.31 4 4-
- 0 Washington Street $0 0.1 Vacant Land 0.02 -
- 41 Orange Street 2/28/2022 $4,700,000 0.1 Antique 3,008 0.1 4 4-1
- 3 Commercial Street 6/20/2014 $15,500,000 0.1 Cape Cod 752 0.51 1 1-
- 10 Martins Lane 9/29/2017 $1,500,000 0.1 Antique 2,003 0.1 4 2-1
- 22 Fair Street 2/25/2003 $0 0.1 Family Conver. 2,444 0.1 4 2-
- 18 Fair Street $0 0.1 Vacant Land 0.09 -
- 32 Washington Street 10/19/2023 $5,000,000 0.1 Aptovrret/Off 1,769 0.2 2 1-
- 40 Orange Street 5/14/2007 $2,970,000 0.1 Antique 2,884 0.06 5 5-1
- 20 Fair Street-Lot 66 12/15/2016 $867,000 0.1 Antique 960 0.03 2 1-
- 8 Washington Street 12/30/1988 $0 0.1 Aptovrret/Off 4,340 0.13 2 3-
- 11 Orange Street $0 0.1 Churches 6,916 0.15 0 2-
- 16 Fair Street $0 0.1 Churches 5,459 0.2 0 2-
- 3 Plumb Lane 3/7/2005 $0 0.1 Antique 1,808 0.05 2 2-1
- 4 Plumb Lane 9/20/2021 $2,390,000 0.1 Antique 1,574 0.12 4 2-1
- 6 Commercial Street $0 0.1 Vacant Land 0.16 -
- 5 Candle Street $0 0.1 Light Indust 6,624 0.44 0 2-
- 43 Orange Street 11/18/2016 $7,595,000 0.1 Antique 4,020 0.16 4 4-
- 22 Fair Street-Lot 130 3/26/2018 $0 0.1 Antique 3,260 0.07 4 4-1
- 34 Washington Street $0 0.1 Office Bldg 2,426 0.16 0 3-
- 36 Union Street-Lot 144 3/5/2014 $1,920,500 0.1 Antique 2,189 0.1 5 3-1
- 24 Fair Street 10/1/2024 $4,050,000 0.1 Antique 2,802 0.08 5 4-1
- 45 Orange Street 10/1/2002 $1,945,000 0.1 Antique 3,995 0.12 3 3-
- 33 Union Street 9/26/2000 $0 0.1 Antique 2,442 0.11 6 3-
- 6 Orange Street $0 0.1 Antique 5,483 0.37 4 3-
- 26 Fair Street 8/14/2020 $5,800,000 0.1 Custom Built 5,006 0.22 6 5-1
- 5 Plumb Lane 9/12/2017 $1,625,000 0.1 Antique 1,704 0.04 3 2-1
- 36 Washington Street 7/31/1996 $2,750,000 0.1 Vacant Land 0.14 -
- 9 Orange Street 9/6/2023 $1,875,000 0.1 Antique 1,969 0.06 4 2-
- 14 Fair Street $0 0.1 Antique 4,484 0.25 4 5-1
- 37 Washington Street 12/20/1990 $395,000 0.1 Office Bldg 4,967 0.19 0 3-
- 47-A Orange Street 5/1/2014 $0 0.1 Conventional 711 0.03 2 1-
- 44 Orange Street 8/16/2002 $1,970,000 0.1 Antique 3,914 0.45 6 4-
- 36 Union Street 1/29/2024 $3,500,000 0.1 Antique 1,697 0.21 4 3-
- 47 Orange Street 10/14/2008 $1,500,000 0.1 Antique 1,596 0.05 3 2-
- 1 Salem Street 10/7/2008 $1,750,000 0.1 Aptovrret/Off 1,371 0.05 1 1-1
- 7 Plumb Lane 12/16/2009 $0 0.1 Antique 956 0.03 2 2-1
- 3 Union Street $0 0.1 Telephone Bldg 5,265 0.37 0 2-
- 38 Washington Street 7/31/1996 $2,750,000 0.1 Vacant Land 0.13 -
- 3 Salem Street 12/8/2020 $1,986,500 0.1 Store 2,178 0.05 0 2-
- 49 Orange Street 11/9/2021 $1,800,000 0.1 Antique 2,049 0.08 4 3-1
- 13 Commercial Wharf 7/14/2021 $5,350,000 0.1 Colonial 2,576 0.18 2 2-1
- 10 Fair Street $0 0.1 Antique 2,071 0.09 3 2-
- 51 Orange Street 5/31/2019 $2,600,000 0.1 Antique 2,749 0.08 5 4-1
- 40 Washington Street 7/31/1996 $2,750,000 0.1 Vacant Land 0.14 -
- 35 Union Street 1/20/2021 $1,675,000 0.1 Colonial 1,848 0.06 4 4-1
- 10 New Whale Street $0 0.1 Light Indust 1,768 1.31 0 0-
- 5 Orange Street 5/25/2021 $4,451,000 0.1 Antique 5,332 0.21 5 5-1
- 30 Fair Street 1/15/1999 $1,051,500 0.1 Antique 2,696 0.07 4 3-1
- 32 Fair Street 10/21/2003 $1,825,000 0.1 Colonial 4,720 0.12 4 3-
- 7 Salem Street 12/8/2020 $8,159,800 0.1 Store 4,103 0.13 2 1-1
- 36 Fair Street 9/10/2012 $950,000 0.1 Antique 3,028 0.08 5 5-1
- 38 Fair Street 6/3/2014 $1,250,000 0.1 Antique 1,531 0.04 3 2-
- 40 Fair Street 12/1/1997 $1,300,000 0.1 Antique 3,299 0.14 5 4-
- 8 Fair Street 12/18/2019 $0 0.1 Antique 3,954 0.1 4 4-1
- 38 Union Street 4/7/2022 $2,520,000 0.1 Antique 2,704 0.11 4 4-
- 2 Orange Street 1/21/2014 $10,730,000 0.1 Finan Inst. 2,533 0.07 0 2-
- 46 Orange Street 8/16/2002 $2,270,000 0.1 Vacant Land 0.15 -
- 2 Union Street 10/29/2019 $2,850,000 0.1 Store 2,788 0.04 0 2-
- 42 Washington Street 7/31/1996 $2,750,000 0.1 Vacant Land 0.13 -
- 15 Fair Street 10/16/2024 $4,450,000 0.1 Antique 3,582 0.09 5 3-
- 42 Fair Street 6/3/1998 $1,000,000 0.1 Antique 2,270 0.13 3 2-1
- 39 Washington Street 2/13/2019 $0 0.1 Conventional 1,698 0.19 4 2-
- 37 Union Street 4/11/2019 $0 0.1 Antique 2,554 0.09 4 3-
- 0 New Whale Street 10/5/2004 $4,100,000 0.1 Vacant Land 0.02 -
Averages 4377 days $2,266,338 0.08 --- 2,569 0.15 --- ---  
DISCLAIMER: The information in this report was collected from the concerned Assessors Office and Registry of Deeds.  Compu-Links disclaims any and all representations or warranties as to the accuracy of this information
4232 75 20 Union Street