21 Overlook Knoll Road, Mashpee, MA 02649

21 Overlook Knoll Road Mashpee MA 02649
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Owner Information
Owner 1
Donna Kelley Bonkowski
Owner 2
Stephen J Bonkowski
Owner's Address
21 Overlook Knoll Rd Mashpee, MA 02649
Market Sale Information
Most recent sale date
12/9/1997
Previous sale date
5/23/1966
Transfer document #
(146820)-
Previous transfer document
297-5
Grantor
Gilbert W Kelley
Previous grantor
Most recent sale price
$100.00
Previous sale price
N/A
Site Information
Property ID
118-35-0
Lot Size
0.15
Use Code
101 - Residential, single family
Zoning
R3
Building Style
Colonial
Number of Rooms
6
Stories
2
Number of Beds
3
Year Built
2022
Number of full baths
2
Condition
Number of half baths
1
Finished Area
2104
Number of Kitchen
Gross Living Area
Number of Fireplaces
Bsmnt floot
Number of parking
Interior walls
Drywall
Floor type
Hardwood
Solar Hot Water
No
Roof Structure
Gable
Heating type
Warm/Cool Air
Roof Cover
Asphalt Shingle
Heating fuel
Gas
Frame type
Wood Frame
Air Condition (%)
Sidings
Vinyl
Assessment Information
Fiscal Year
2025
Land Value
$1,294,900.00
Total value
$2,014,200.00
Building value
$718,300.00
Estimated tax
$12,931.00
Yard improvement value
$1,000.00
Flood Map MassMapper Google Street View
Certified Mass Appraisal
19992000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024$0$500,000$1,000,000$1,500,000$2,000,000$2,500,000Total Assessment ($)ImprovementsLandBuildingTotal Assessment
Comparable Properties
Mailing Labels $Valuation Report Copy To Clipboard
Subject Property11 Halyard Circle69 Waterway38 Summersea Road251 Fells Pond Road153 Uncle Percys Road56 Cottage Lane9 Starboard Lane10 Starboard Lane21 Overlook Knoll Road$0$500,000$1,000,000$1,500,000$2,000,000$2,500,000Total Assessment ($)Total Assessment
Address 21 Overlook Knoll Road A) 9 Starboard LaneB) 10 Starboard LaneC) 153 Uncle Percys RoadD) 11 Halyard CircleE) 69 WaterwayF) 56 Cottage LaneG) 38 Summersea RoadH) 251 Fells Pond Road
Photo
Plan
Map
Proximity 0.10.10.50.60.60.80.80.9
Last Sold 3/14/20251/17/20254/9/20255/1/20255/12/20255/6/20256/18/20252/20/2025
Price $1,810,000$1,450,000$1,050,000$1,025,000$1,065,000$1,650,000$1,800,000$800,000
Net Living Area 1,6121,9362,5281,6961,7942,2521,8421,980
Stories 1.7521.7511.751.521.75
Sale Price/sft $0.05$1122.83$748.97$415.35$604.36$593.65$732.68$977.20$404.04
Style ColonialCapeColonialContemporaryContemporaryContemporaryNs CottagesContemporaryCape
Age 202219521954198619641975201819931984
Rooms 687666766
Bedrooms 353433433
Full baths 202222323
Half baths 121100110
Gross Living Area
Heating Fuel GasGasOilGasGasGasGasGasGas
Detached Garage
Lot Size 0.150.160.160.670.250.290.110.360.24
Roof Cover Asphalt ShingleAsphalt ShingleAsphalt ShingleAsphalt ShingleAsphalt ShingleAsphalt ShingleAsphalt ShingleAsphalt ShingleAsphalt Shingle
AEM Value - Building $718,300.00$311,400$324,500$540,800$363,600$442,700$704,200$495,500$531,300
AEM Value - Land $1,294,900.00$1,172,000$1,171,500$400,700$358,100$362,200$626,500$368,500$357,600
AEM Value - Other $1,000.00$500$800$0$26,800$1,200$0$0$3,300
AEM Value - Total $2,014,200.00$1,483,900$1,496,800$941,500$748,500$806,100$1,330,700$864,000$892,200
# Address Last Sold Sale Price Dist(m) Style LA (sq ft) Lot(ac) BR F-HB
@ 21 Overlook Knoll Road 12/9/1997 $100 0 Colonial 2,104 0.15 3 2-1 -
  Criteria
A 9 Starboard Lane 3/14/2025 $1,810,000 0.1 Cape 1,612 0.16 5 0-2
B 10 Starboard Lane 1/17/2025 $1,450,000 0.1 Colonial 1,936 0.16 3 2-1
C 153 Uncle Percys Road 4/9/2025 $1,050,000 0.5 Contemporary 2,528 0.67 4 2-1
D 11 Halyard Circle 5/1/2025 $1,025,000 0.6 Contemporary 1,696 0.25 3 2-0
E 69 Waterway 5/12/2025 $1,065,000 0.6 Contemporary 1,794 0.29 3 2-0
F 56 Cottage Lane 5/6/2025 $1,650,000 0.8 Ns Cottages 2,252 0.11 4 3-1
G 38 Summersea Road 6/18/2025 $1,800,000 0.8 Contemporary 1,842 0.36 3 2-1
H 251 Fells Pond Road 2/20/2025 $800,000 0.9 Cape 1,980 0.24 3 3-0
Averages 75 days $1,331,250 0.56 --- 1,955 0.28 --- ---  

Estimation of Market Value - $1,968,807

As of today, 06/22/2025, the estimated market value of 21 Overlook Knoll Road, Mashpee considering the above 8 comparable properties is $1,968,807.

 

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
Copy to Clipboard
Subject Property0 Wilsons Grove-Beach0 Bluff Avenue52 Bluff Avenue38 Cordwood Road19 Shore Drive9 Shore Drive32 Cordwood Road49 Shore Drive26 Cordwood Road11 Shore Drive24 Cordwood Road15 Shore Drive7 Wilsons Grove224 Wading Place Road217 Wading Place Road16 Starboard Lane226 Wading Place Road227 Wading Place Road10 Starboard Lane2 Starboard Lane6 Starboard Lane218 Wading Place Road6 Shore Drive221 Wading Place Road18 Starboard Lane8 Shore Drive21 Overlook Knoll Road$0$500,000$1,000,000$1,500,000$2,000,000$2,500,000Total Assessment ($)Total Assessment
# Address Last Sold Sale Price Dist(m) Style LA (sq ft) Lot(ac) BR F-HB
@ 21 Overlook Knoll Road 12/9/1997 $100 0 Colonial 2,104 0.15 3 2-1 -
  Criteria
A 25 Overlook Knoll Road 8/10/2021 $2,075,000 0.0 New Style 3,476 0.15 3 3-1
B 17 Overlook Knoll Road 1/4/2022 $1,290,000 0.0 Colonial 2,588 0.15 3 2-1
C 21 Seaview Avenue 8/29/2006 $868,000 0.0 Ranch 884 0.16 3 1-0
D 20 Overlook Knoll Road 3/17/2015 $1 0.0 Ranch 992 0.15 3 1-0
E 17 Seaview Avenue 6/18/2014 $700,000 0.0 Cape 1,732 0.16 3 2-0
F 24 Overlook Knoll Road 10/14/2020 $100 0.0 Ranch 896 0.15 3 1-0
G 16 Overlook Knoll Road 10/24/2014 $115,000 0.0 Colonial 1,956 0.15 4 2-0
H 13 Overlook Knoll Road 10/2/2008 $1 0.0 Colonial 2,248 0.15 3 3-0
I 25 Seaview Avenue 11/24/2020 $1,472,000 0.0 Cape 1,725 0.19 3 2-1
J 15 Seaview Avenue 12/19/2003 $1 0.0 Colonial 2,410 0.16 4 3-1
K 14 Overlook Knoll Road 8/29/2018 $100 0.0 Ranch 1,104 0.15 3 2-0
L 29 Overlook Knoll Road 2/15/2017 $1,600,000 0.0 New Style 3,291 0.33 3 5-0
M 86 Bluff Avenue 3/30/2020 $1 0.0 Ranch 986 0.16 3 1-0
N 82 Bluff Avenue 5/16/2006 $100 0.0 Colonial 2,292 0.16 4 2-0
O 19 Starboard Lane 9/9/2024 $1 0.0 Colonial 1,803 0.16 4 1-1
P 23 Starboard Lane 7/16/1990 $265,000 0.0 Contemporary 2,084 0.16 3 2-0
Q 29 Seaview Avenue 9/7/2018 $1,450,000 0.0 Ranch 936 0.23 3 2-0
R 9 Overlook Knoll Road 6/26/2018 $1 0.0 Ranch 900 0.15 3 1-0
S 90 Bluff Avenue 7/31/2009 $1,275,000 0.0 Ranch 1,468 0.18 3 2-0
T 11 Seaview Avenue 3/11/2021 $1,679,000 0.0 New Style 2,010 0.16 3 2-1
U 30 Overlook Knoll Road 11/18/2020 $1 0.0 Colonial 1,772 0.33 3 2-0
V 15 Starboard Lane 3/16/2017 $0 0.0 Colonial 1,912 0.16 4 2-0
W 25 Starboard Lane 7/11/2019 $1,925,000 0.0 Custom 2,375 0.16 4 3-0
X 78 Bluff Avenue 5/18/1998 $227,500 0.0 Ranch 1,192 0.16 3 1-1
Y 10 Overlook Knoll Road 12/14/1984 $145,000 0.0 Colonial 2,563 0.15 3 3-1
Z 11 Starboard Lane 5/15/1998 $217,500 0.1 Ranch 1,112 0.16 3 1-0
- 94 Bluff Avenue 1/11/2011 $1 0.1 Contemporary 2,770 0.21 3 2-1
- 74 Bluff Avenue 5/29/2018 $985,000 0.1 Cape 1,384 0.16 3 4-2
- 31 Starboard Lane 3/20/2020 $3,000,000 0.1 Custom 2,706 0.29 3 3-1
- 7 Seaview Avenue 6/21/2002 $100 0.1 Ranch 1,032 0.15 3 1-0
- 5 Overlook Knoll Road 6/29/2005 $849,000 0.1 Contemporary 2,638 0.15 3 3-0
- 9 Starboard Lane 3/14/2025 $1,810,000 0.1 Cape 1,612 0.16 5 0-2
- 6 Overlook Knoll Road 2/16/2017 $100 0.1 Colonial 2,352 0.15 3 5-0
- 22 Starboard Lane 11/12/2010 $1,425,000 0.1 Cape 1,928 0.21 3 3-0
- 85 Bluff Avenue 4/12/2002 $540,000 0.1 Colonial 2,572 0.17 3 3-1
- 25 Wading Place Road 6/13/1995 $124,700 0.1 0.01 -
- 81 Bluff Avenue 12/15/2017 $837,500 0.1 New Style 3,731 0.18 3 3-1
- 70 Bluff Avenue 3/20/2019 $1 0.1 Custom 2,271 0.16 3 2-1
- 89 Bluff Avenue 10/3/2022 $1,950,000 0.1 Split Level 992 0.17 3 1-0
- 18 Starboard Lane 9/10/2024 $2,500,000 0.1 Cape 2,002 0.19 3 2-0
- 16 Starboard Lane 12/31/2008 $0 0.1 Raised Ranch 1,008 0.16 3 2-0
- 75 Bluff Avenue 10/7/2011 $950,000 0.1 Custom 3,074 0.18 3 4-1
- 1 Overlook Knoll Road 8/12/2020 $1 0.1 Ranch 1,188 0.13 2 1-0
- 0 Bluff Avenue 6/13/1995 $124,700 0.1 0.33 -
- 5 Starboard Lane 1/16/2015 $860,000 0.1 Colonial 2,199 0.16 4 3-1
- 3 Seaview Avenue 6/27/2012 $1 0.1 Ranch 1,762 0.21 3 2-1
- 93 Bluff Avenue 4/9/2018 $1,650,000 0.1 Colonial 1,902 0.24 4 3-0
- 73 Bluff Avenue 7/13/2017 $10 0.1 Custom 2,460 0.18 1 3-1
- 2 Overlook Knoll Road 6/26/2018 $10 0.1 Cape 1,566 0.12 3 3-1
- 10 Starboard Lane 1/17/2025 $1,450,000 0.1 Colonial 1,936 0.16 3 2-1
- 66 Bluff Avenue 9/12/2022 $1,175,000 0.1 Contemporary 1,558 0.21 3 2-1
- 22 Wilsons Grove 5/18/2010 $1 0.1 Colonial 1,256 0.05 2 2-1
- 24 Wilsons Grove 5/28/2024 $100 0.1 Camp 595 0.05 2 1-1
- 227 Wading Place Road 2/3/1997 $1 0.1 Colonial 1,692 0.16 3 1-1
- 20 Wilsons Grove 3/21/2023 $1 0.1 Camp 512 0.07 2 1-0
- 26 Wilsons Grove 9/13/2019 $1 0.1 Conventional 913 0.05 2 2-0
- 71 Bluff Avenue 12/23/2021 $725,000 0.1 Cape 2,683 0.18 4 2-0
- 28 Wilsons Grove 11/19/2014 $10 0.1 Camp 707 0.05 2 0-1
- 18 Wilsons Grove 5/25/2021 $775,000 0.1 Custom 1,878 0.08 3 2-1
- 3 Starboard Lane 7/7/2014 $275,000 0.1 Ranch 1,214 0.16 3 1-1
- 30 Wilsons Grove 5/6/2004 $1 0.1 Colonial 1,289 0.05 2 2-0
- 16 Wilsons Grove 9/25/2017 $790,000 0.1 Colonial 1,788 0.1 2 2-0
- 6 Starboard Lane 7/5/2019 $100 0.1 Ranch 1,641 0.17 3 2-0
- 32 Wilsons Grove 1/26/2017 $100 0.1 Camp 780 0.05 3 1-0
- 34 Wilsons Grove 5/10/1999 $100 0.1 Camp 984 0.05 1 1-0
- 12 Wilsons Grove 7/2/2015 $900,000 0.1 Colonial 2,417 0.16 4 3-1
- 36 Wilsons Grove 5/3/2024 $100 0.1 Camp 1,116 0.08 3 2-0
- 40 Wilsons Grove 9/2/2020 $100 0.1 Ranch 947 0.08 3 1-1
- 221 Wading Place Road 3/13/2015 $100 0.1 Colonial 2,392 0.17 4 2-1
- 8 Wilsons Grove 3/12/2019 $765,000 0.1 Colonial 1,904 0.1 3 3-0
- 2 Starboard Lane 4/2/1999 $325,000 0.1 Ranch 1,512 0.17 4 2-0
- 44 Shore Drive 12/10/2019 $100 0.1 Ranch 1,344 0.25 3 2-0
- 31 Shore Drive 5/23/1996 $1 0.1 Ranch 1,262 0.14 3 2-0
- 27 Shore Drive 2/26/2021 $1 0.1 Ranch 1,240 0.16 3 2-0
- 35 Shore Drive 1/14/2020 $100 0.1 Ranch 1,040 0.14 4 1-1
- 23 Shore Drive 3/20/2024 $715,000 0.1 Ranch 940 0.16 3 1-0
- 37 Shore Drive 6/11/2002 $1 0.1 Ranch 1,202 0.14 3 2-0
- 4 Wilsons Grove 10/24/2022 $10 0.1 Ranch 1,466 0.16 3 1-0
- 217 Wading Place Road 6/7/2021 $100 0.1 Ranch 833 0.2 2 1-0
- 236 Wading Place Road 10/19/1939 $0 0.1 2 -
- 0 Wilsons Grove-Beach 10/11/1991 $0 0.1 0.1 -
- 19 Shore Drive 10/15/2012 $450,000 0.1 Ranch 1,199 0.17 3 1-0
- 21 Wilsons Grove 2/2/2017 $150,000 0.1 Camp 618 0.05 2 1-1
- 41 Shore Drive 7/12/2024 $534,009 0.1 Cape 1,530 0.14 4 2-1
- 23 Wilsons Grove 10/17/2017 $1 0.1 Camp 852 0.08 2 1-0
- 19 Wilsons Grove 11/21/2019 $1 0.1 Colonial 1,988 0.1 3 2-0
- 25 Wilsons Grove 1/17/2024 $1 0.1 Ranch 708 0.08 2 1-0
- 8 Shore Drive 8/16/2024 $2,000,000 0.1 Colonial 2,205 0.17 3 4-0
- 17 Wilsons Grove 12/23/2009 $0 0.1 Cape 1,002 0.05 2 1-0
- 29 Wilsons Grove 10/9/1992 $0 0.1 Contemporary 1,129 0.05 3 2-0
- 224 Wading Place Road 8/17/2021 $1 0.1 Ranch 1,024 0.16 2 1-0
- 31 Wilsons Grove 6/7/2022 $775,000 0.1 Camp 720 0.05 2 1-1
- 15 Wilsons Grove 6/1/2016 $350,000 0.1 Camp 540 0.1 2 1-0
- 35 Wilsons Grove 5/24/2005 $1 0.1 Conventional 1,481 0.1 4 1-0
- 11 Wilsons Grove 1/12/2016 $440,000 0.1 Ranch 656 0.1 2 1-0
- 15 Shore Drive 9/6/2006 $1 0.1 Colonial 1,988 0.17 3 2-1
- 2 Wilsons Grove 2/16/2021 $10 0.1 Raised Ranch 1,208 0.16 2 1-1
- 39 Wilsons Grove 11/28/2023 $100 0.1 Colonial 1,929 0.1 2 2-1
- 7 Wilsons Grove 12/20/1996 $15,559 0.1 Ranch 1,413 0.16 4 1-0
- 59 Bluff Avenue 5/29/2019 $799,000 0.1 Colonial 1,963 0.15 3 3-1
- 34 Cordwood Road 8/17/2020 $1,176,000 0.1 Colonial 2,136 0.16 5 3-0
- 32 Cordwood Road 7/12/2024 $100 0.1 Ranch 1,246 0.15 3 1-0
- 38 Cordwood Road 6/15/2023 $1 0.1 Ranch 1,079 0.17 3 1-0
- 11 Shore Drive 7/12/2024 $1,600,000 0.1 Cape 1,932 0.17 3 3-1
- 226 Wading Place Road 3/27/1995 $0 0.1 Ranch 672 0.16 2 1-0
- 6 Shore Drive 6/23/1980 $0 0.1 Contemporary 1,944 0.26 4 2-1
- 26 Cordwood Road 11/17/1978 $0 0.1 Colonial 2,129 0.17 3 2-1
- 52 Bluff Avenue 11/25/2005 $441,000 0.1 Ranch 1,120 0.19 3 1-0
- 49 Shore Drive 4/28/2023 $1,280,000 0.1 Ranch 1,106 0.14 3 2-0
- 3 Wilsons Grove 3/11/2022 $1 0.1 Cape 2,202 0.16 3 2-0
- 24 Cordwood Road 11/29/2016 $912,500 0.1 Colonial 2,174 0.17 5 3-1
- 218 Wading Place Road 2/2/2011 $0 0.1 Contemporary 1,662 0.16 4 2-0
- 9 Shore Drive 2/8/2022 $0 0.1 Conventional 1,383 0.16 3 2-0
Averages 4469 days $457,785 0.08 --- 1,556 0.17 --- ---  
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
118 35 0 21 Overlook Knoll Road