Updated: Jul 25, 2026
Location and Projects
Address
11 FAIRMOUNT AVE, Boston, MA, 02122
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Denis O Keohane Construction
Serving the Boston, MA area for over 16 years, Denis O Keohane brings extensive experience in residential construction and remodeling. Active since 2008, the company has worked on various home improvement projects throughout Boston’s neighborhoods. Project types have included interior renovations and updates to existing single-family properties. Denis O Keohane focuses on delivering construction services specified by homeowners looking to upgrade or maintain their homes. With a longstanding presence in Greater Boston, the company handles permit-based projects and offers practical solutions tailored to residential requirements. Denis O Keohane’s track record demonstrates an ongoing commitment to serving local property owners with a focus on reliable, permitted work.
Denis O Keohane Services
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Denis O Keohane Contact Information
Phone Number: (941) 752-4975
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Address: 11 FAIRMOUNT AVE, Boston, MA 02122
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Denis O Keohane Boston
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Denis O Keohane has a BuildZoom score of 95, which places them above 78% of 139,240 contractors in Massachusetts.
Activity
|
1 project
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that Denis O Keohane has worked on at least
2.0 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.
Pricing
|
2 projects
|
$250k-$500k |
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.
Eight lot single family subdivision. lot #1 (9, 258 sqft). construct a wood framed 4 bed 2 full bathrooms 2 half bathrooms 2 car attached garage as per plans.eplan;proviso: public works to sign off their review before isd finalizes the coo
Valuation:
$481,950
Permit #:
ERT1230713
Status:
filed
Fee:
$5,870
Permit Type:
N/A
Building Type:
1-2fam
Eight lot single family subdivision. lot #8. construct a wood framed 4 bed 2 full bathrooms 2 half bathrooms 2 car attached garage as per plans.eplanproviso: public works review to be answered before issuance of coo.;
Valuation:
$481,950
Permit #:
ERT1230867
Status:
filed
Fee:
$5,670
Permit Type:
N/A
Building Type:
1-2fam
Install new cabinets and counters in three kitchens. install new fixtures in three bathrooms. replace existing railings on three front and three rear decks with p.t. install new t&g flooring on 5 of same decks. replace 6 windows. paint interior and exterior of building. install fence and minor landscaping
Valuation:
$100,000
Permit #:
SF850830
Status:
complete
Fee:
$1,020
Permit Type:
N/A
Building Type:
1-3fam
Demolish and dispose of existing commercial building
Valuation:
$13,700
Permit #:
SF900411
Status:
filed
Fee:
$160
Permit Type:
N/A
Building Type:
Commercial
; ; change occupancy from lodgers house with 12 lodgers to 6; 5 apartments with 8 parking space and renovate existing boarding house. demolish barn/warehouse in rear of lot. erect an addition including emp and sprinkler as per plans. *demolition of structure is to be performed on a separate permit. ;
Valuation:
$950,000
Permit #:
ALT667020
Status:
filed
Fee:
$9,874
Permit Type:
N/A
Building Type:
Multi
New roof new siding 2 new kitchens 4 new bathrooms new plastering kitchens and bathrooms update electrical and plumbing new heat sand floors some new doors and trim painting interior. extend living space into basement
Valuation:
$160,000
Permit #:
ALT680429
Status:
complete
Fee:
$1,662
Permit Type:
N/A
Building Type:
1-2fam
Strip existing roof shingles and install new shingles. install 46 replacement windows. install new cabinets in two kitchens and install new fixtures in two bathrooms. paint interior. minor wood replacement on exterior of windows. repair front entrance exterior stairs (masonry work)
Valuation:
$25,000
Permit #:
SF493544
Status:
filed
Fee:
$270
Permit Type:
N/A
Building Type:
1-2fam
1- patch 7 open holes in the ceiling. 2- install fire caulking around basement stairs. 3- repair damaged sheets of plywood near the exit door on the second floor. 4- assist adt with fire inspections and sign offs. (adt contract and scope of work also attached)
Valuation:
$17,750
Permit #:
SF1319449
Status:
complete
Fee:
$200
Permit Type:
N/A
Building Type:
Commercial
Demolish existing dwelling on lot.; erect a new 3 story four ( 4 ) unit residential building as per plans
Valuation:
$1,100,000
Permit #:
ERT499491
Status:
filed
Fee:
$11,244
Permit Type:
N/A
Building Type:
Multi
Four residential units coo for four residential units ert499491 issued 4/29/2016
Valuation:
$1,100,000
Permit #:
COO670928
Status:
complete
Fee:
$1,125
Permit Type:
N/A
Building Type:
Multi
Change occupancy from restaurant, tavern to offices - remove existing bar counter. tile floor paint walls in bathrooms. csl license # 58015 ;
Valuation:
$3,000
Permit #:
ALT307101
Status:
filed
Fee:
$130
Permit Type:
N/A
Building Type:
Commercial
Demolish existing single family house and foundation
Valuation:
$25,000
Permit #:
SF579555
Status:
filed
Fee:
$270
Permit Type:
N/A
Building Type:
1-2fam
Offices certificate of occupancy;;for offices alt307101 issued: 11/19/2014 ;
Valuation:
$3,000
Permit #:
COO456781
Status:
complete
Fee:
$210
Permit Type:
N/A
Building Type:
Commercial
Demolish and make safe interior of building
Valuation:
$10,000
Permit #:
SF673924
Status:
complete
Fee:
$120
Permit Type:
N/A
Building Type:
1-2fam
Addition parking space and relocate trash barrells to new location near garage door as per plans. amend permit #2337/2010
Valuation:
$100
Permit #:
A131263
Status:
EXPIRED
Fee:
$20
Permit Type:
Other
Building Type:
1-7fam
Change occupancy from settlement house back to its original use as a three family. complete renovation
Valuation:
$200,000
Permit #:
ALT1172
Status:
filed
Fee:
$2,168
Permit Type:
N/A
Building Type:
Commercial
Remove existing rear barn structure including foundations. cost reflected in long form alt667020
Valuation:
N/A
Permit #:
SF789018
Status:
filed
Fee:
$20
Permit Type:
N/A
Building Type:
Multi
Other: addition parking space and relocate trash barrells to new location near garage door as per plans. amend permit #2337/2010
Valuation:
$100
Permit #:
U49131532
Status:
Stop Work
Fee:
$50
Permit Type:
N/A
Building Type:
1-7fam
Install new wheelchair lift as per plan
Valuation:
N/A
Permit #:
C-12-0249
Status:
issued
Fee:
$450
Permit Type:
N/A
Building Type:
N/A
Demolish exisitng building and prepare site for permitted new six unit building (on separate permit)
Valuation:
$22,000
Permit #:
SF47663
Status:
filed
Fee:
$240
Permit Type:
N/A
Building Type:
1-3fam
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Denis O Keohane License info
Verified License
| License # | CS-058015 |
| 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 Denis O Keohane at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 225437 |
| Status | Active |
| City | Newton |
| Type | Building Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of Denis O Keohane with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 106284 |
| Status | Active |
| City | Newton |
| Type | General Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of Denis O Keohane with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 225437 |
| Status | Active |
| City | Newton |
| Type | Residential Builder |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of Denis O Keohane with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 106284 |
| Status | Active |
| City | Newton |
| Type | Electrical Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of Denis O Keohane with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CS-045337 |
| Status | Active |
| State | Massachusetts |
| Type | Construction Supervisor |
- When BuildZoom last verified this license, it had an expiration date of November, 2012. Check the current license status of Denis O Keohane with the Massachusetts Department of Public Safety
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 106284 |
| Status | Inactive |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- According to the Mass.gov Consumer Affairs and Business Regulation, 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 Denis O Keohane at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | CS-045337 |
| Status | Inactive |
| State | Massachusetts |
| Type | Building Licenses, Construction Supervisor |
- According to the Massachusetts Department of Public Safety, 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 Denis O Keohane at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| State | Florida |
| Type | Construction Business Information |
- According to the Florida Department of Business & Professional Regulation, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 104074 |
| Status | Inactive |
| State | Massachusetts |
| Type | Home Improvement Contractor |
- According to the Mass.gov Consumer Affairs and Business Regulation, 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 Denis O Keohane at the Mass.gov Consumer Affairs and Business Regulation.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
19
Permits
- Building permit records show that Denis O Keohane has worked on 19 permitted projects.
Denis O Keohane Employees
DK
Denis F Keohane
Owner
DK
Denis Keohane
Owner
DK
Denis O Keohane
Responsible Person
ML
Marc A Lindman
Responsible Person
RC
Royalty Construction
Owner