Updated: Jul 27, 2026
Location and Projects
Address
10 Washburn Street, Boston, MA, 02125
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Dermot T Kiernan Construction
Serving clients throughout the Boston, Massachusetts area, Dermot T Kiernan offers nearly two decades of experience in the construction industry. Active since 2006, the company is equipped to handle a range of residential renovation and improvement projects. Project types include interior remodeling, exterior repair work, and property upgrades in single-family homes within the Greater Boston region. With practical knowledge of local building codes and techniques suited to older New England homes, Dermot T Kiernan assists clients in maintaining and enhancing their properties. The company’s eighteen years in operation reflect a sustained presence in the area and experience with both small- and medium-scale projects. Dermot T Kiernan remains focused on serving homeowners seeking reliable construction and remodeling services in Boston and the surrounding communities.
Dermot T Kiernan Services
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Dermot T Kiernan Contact Information
Phone Number: (781) 777-2920
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Address: 10 Washburn Street, Boston, MA 02125
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Dermot T Kiernan Boston
Quality
100
87th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Dermot T Kiernan has a BuildZoom score of 100, which places them above 87% of 139,240 contractors in Massachusetts.
Activity
|
2 projects
|
2025 |
|
4 projects
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Dermot T Kiernan has worked on at least
7.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
4 projects
|
New Constructions |
Analyzing permits over the last 4 years shows that Dermot T Kiernan mostly works on
new construction
projects.
Pricing
|
3 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
|
1 project
|
$250k-$500k |
|
3 projects
|
$1mil+ |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Remove a non-load bearing partition/closets between the living and dining rooms. includes associated gypsum wll board and painting to patch walls and ceiling as needed. patch floors as needed and refinish floor
Valuation:
$20,590
Permit #:
BP-2025-000614
Status:
complete
Fee:
$420
Permit Type:
N/A
Building Type:
Multi family dwel...
Interior renovation only. full interior renovation of existing single family house: new layout includes new kitchen and bathrooms with all new finishes throughout. staircase for 1st to 2nd floor to be protected and saved
Valuation:
$1,589,000
Permit #:
BP-2023-001849
Status:
final
Fee:
$28,560
Permit Type:
N/A
Building Type:
Single family dwe...
New sprinklered 3 story type vb 2 family dwelling over shared type 1a underground parking garage with ev charging stations - accessory roof structures built above 3rd story - parking shared with 41-43 stearns rd - dwelling and garage separated per code to create separate buildings - per approved plans and zba decision 2020-0037
Valuation:
$1,318,250
Permit #:
BP-2021-001401
Status:
final
Fee:
$24,520
Permit Type:
N/A
Building Type:
Two family dwelling
New sprinklered 3 story type vb 2 family dwelling over shared type 1a underground parking garage with ev charging stations - accessory roof structures built above 3rd story - parking shared with 45 stearns rd - dwelling and garage separated per code to create separate buildings - per approved plans and zba decision 2020-0036
Valuation:
$1,597,500
Permit #:
BP-2021-001399
Status:
final
Fee:
$28,340
Permit Type:
N/A
Building Type:
Two family dwelling
Complete renovation of existing 2-unit house
Valuation:
$1,130,975
Permit #:
BP-2020-000618
Status:
complete
Fee:
$13,520
Permit Type:
N/A
Building Type:
Multi family dwel...
Building new detached 2 car garage for 21 alveston st.*note: this accessory detached garage structure to be known as 21r alveston street.;
Valuation:
$36,000
Permit #:
ERT1474681
Status:
filed
Fee:
$410
Permit Type:
N/A
Building Type:
1-2fam
Inside work only - selective demolition: remove finishes to prepare for an interior only renovation of the existing space. remove existing meps ; all work must comply with 780 cmr & brookline by-laws. dust mitigation required during permitted work
Valuation:
$48,000
Permit #:
BP-2023-001702
Status:
complete
Fee:
$900
Permit Type:
N/A
Building Type:
Single family dwe...
Additon of new 2 car garage and accessory dweling unit
Valuation:
$224,190
Permit #:
1824
Status:
issued
Fee:
$4,482
Permit Type:
N/A
Building Type:
Residential
Tco full interior renovation of single family home per approved plan set
Valuation:
N/A
Permit #:
CO-2025-000066
Status:
final
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
Construct 2-car detached garage with habitable space above. all work per zba dec 2023-000070 and preservation commercial. at risk permit per 40a §11 a court could reverse the permit and any construction performed under the permit may be ordered undone. all work must comply with 780 cmr & brookline by-laws
Valuation:
$65,000
Permit #:
BP-2024-000448
Status:
issued
Fee:
$1,000
Permit Type:
N/A
Building Type:
Single family dwe...
Installing new vinyl siding over existing wood siding
Valuation:
$40,000
Permit #:
SF1406621
Status:
complete
Fee:
$420
Permit Type:
N/A
Building Type:
Other
Replace siding & trim
Valuation:
$50,000
Permit #:
19070151
Status:
filed
Fee:
$1,000
Permit Type:
N/A
Building Type:
N/A
Subdivide existing 16, 005 s.f. lot into two lots. lot 1 to contain 9, 503 s.f. and lot 2 to contain 6, 502 s.f renovate existing two family dwelling on lot 1 and erect a new single family dwelling;;(with detached garage);on lot 2;as per plans see alt1316705 for subdivision and renovation of existing structure
Valuation:
$300,000
Permit #:
ERT1316710
Status:
complete
Fee:
$3,050
Permit Type:
N/A
Building Type:
1-2fam
Subdivide existing 16, 005 s.f. lot into two lots. lot 1 to contain 9, 503 s.f. ; and lot 2 to contain 6, 502 s.f renovate existing two family dwelling (with new addition in rear);on lot 1 and erect a new single family dwelling on lot 2 as per plans see ert1316710 for proposed new dwelling.*ndod overlay
Valuation:
$200,000
Permit #:
ALT1316705
Status:
filed
Fee:
$2,150
Permit Type:
N/A
Building Type:
1-2fam
; replace existing gable roof with mansard style. addition of windows;bedrooms bathroom. (anticipating building and zoning violations)
Valuation:
$95,883
Permit #:
ALT570184
Status:
complete
Fee:
$419
Permit Type:
N/A
Building Type:
1-2fam
Convert a section of unfinished basement into storage space. addition stair access from first floor unit
Valuation:
$16,100
Permit #:
ALT607092
Status:
filed
Fee:
$232
Permit Type:
N/A
Building Type:
1-2fam
Lobby and cafe seating area move seating area to lobby for future office space
Valuation:
N/A
Permit #:
P201641441
Status:
final
Fee:
$16,741
Permit Type:
N/A
Building Type:
404 research&deve...
Replacement windows on 2nd floor
Valuation:
N/A
Permit #:
P201240344
Status:
ISSUED
Fee:
$1,641
Permit Type:
Replacement windows
Building Type:
404 research&deve...
Moca systems office remodel - 4th floor see attached plans
Valuation:
$268,285
Permit #:
09060228
Status:
complete
Fee:
$4,990
Permit Type:
N/A
Building Type:
N/A
Certificate of approval
Valuation:
$0
Permit #:
C2010-257
Status:
N/A
Fee:
$50
Permit Type:
N/A
Building Type:
N/A
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Dermot T Kiernan License info
Verified License
| License # | 188955 |
| Status | Active |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Dermot T Kiernan at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CS-099286 |
| Status | Active |
| State | Massachusetts |
| Type | Building Licenses, Construction Supervisor |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Dermot T Kiernan at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 99286 |
| Status | Inactive |
| City | Newton |
| Type | Residential Builder |
- According to the City of Newton Massachusetts, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Dermot T Kiernan at the City of Newton Massachusetts.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 99286 |
| Status | Inactive |
| City | Newton |
| Type | Building Contractor |
- According to the City of Newton Massachusetts, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Dermot T Kiernan at the City of Newton Massachusetts.
This is a sample of licensing data; click here to access a complete history.
100
BuildZoom Score
18
Permits
- Building permit records show that Dermot T Kiernan has worked on 18 permitted projects.
Dermot T Kiernan Employees
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Dermot Kiernan
Owner
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Dermot T Kiernan
Individual