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Location and Projects

Address
97 Nassau Ave, Brooklyn, NY, 11222
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Killowen Construction in HVAC/Mechanical Contractor

Killowen Construction was established by Kieran Breen who has over 15 years of construction experience in New York City luxury home renovations. Over this time the company has established connections with the best sub-contractors in real estate construction in Manhattan.

With a team of experienced specialists in the areas of custom mill-work, metal fabrication, stonework, engineering and mechanical systems, Killowen Construction delivers quality homes to clients who are satisfied time and time again. Value engineering forms a key role in delivering the projects efficiently and within budget.

As principal of the company, Kieran takes a “hands on” approach to his projects and ensures timely delivery with an acute attention to detail. Expanding from interior renovations to increasingly complex jobs, he is paving the way for a rapidly growing company and customer base.

From BuildZoom: Killowen Construction in, 97 Nassau Ave, Brooklyn, NY (Owned by: Kieran Breen) holds a Home Improvement Contractor license and 4 other licenses according to the New York license board.

Their BuildZoom score of 106 ranks in the top 7% of 77,888 New York licensed contractors.

Their license was verified as active when we last checked. If you are thinking of hiring Killowen Construction in, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.

Killowen Construction in Contact Information

Phone: (718) 389-5050
Address: 97 Nassau Ave, Brooklyn, NY 11222

Killowen Construction in Brooklyn

Quality

106
93rd percentile
How is the BuildZoom score calculated?
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
Killowen Construction in has a BuildZoom score of 106, which places them above 93% of 77,888 contractors in New York.

Activity

4 projects
 2025
3 projects
 2024
2 projects
 2023
Our building permit records indicate that Killowen Construction in has worked on at least 9.0 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.

Experience

6 projects
 Mechanical projects
3 projects
 HVAC projects
Analyzing permits over the last 4 years shows that Killowen Construction in mostly works on mechanical project and hvac project projects.

Pricing

2 projects
 $5k-$20k
1 project
 $20k-$50k
2 projects
 $50k-$100k
2 projects
 $100k-$250k
5 projects
 $250k-$500k
1 project
 $1mil+
Value Not Public: 0 projects
The typical size of their permits is approximately $100,001. This graph shows the distribution of these job values.
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.

Building Permits by Killowen Construction in

Sort by: Notable Notable | Date Date | Job Value Job Value

This is a sample of this contractor's permits. Click here to access their complete permit history.

General construction
761 Greenwich St, New York, NY, 10014
2025-12-29
Renovation of an existing 2 family townhouse to include replacement of an existing greenhouse and interior renovations. structural plumbing mechanical and sprinkler work filed under separate applications. no change of use occupancy or egress
Valuation:
$440,011
Permit #:
M01237039-I1-GC
Status:
approved
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
General construction
2150 Broadway, New York, NY, 10023
2025-02-03
Interior renovation - private apartment on 18th floor with new partitions interior doors millwork fixtures & finishes.no change to use egress or occupancy
Valuation:
$340,000
Permit #:
M01143647-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Structural
142 Watts St, New York, NY, 10013
2024-11-22
Structural work filed in conjunction with the renovation of an existing one family dwelling as per plans. architectural plumbing mechanical and sprinkler work filed under separate applications. no change of use occupancy or egress
Valuation:
$420,000
Permit #:
M00908939-I1-ST
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
761 Greenwich St, New York, NY, 10014
2025-12-29
Mechanical work filed in conjunction with the renovation of an existing townhouse as per plans. architectural plumbing structural and sprinkler work filed under separate applications. no change in use occupancy or egress
Valuation:
$80,000
Permit #:
M01237047-I1-MS
Status:
approved
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
General construction
97 Nassau Ave, Brooklyn, NY, 11222
2025-06-07
Renovation of existing commercial space. architectural work. new certificate of occupancy to be obtained to addition eating and drinking establishment use onthe 1st floor and the rear yard. ( alt-1 already approved under job # 321538029)
Valuation:
$150,000
Permit #:
B01071582-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
142 Watts St, New York, NY, 10013
2024-07-14
Renovation of a one family dwelling. architectural work as per plans. mechanical sprinkler plumbing and structural work as per plans. no change of use occupancy or egress
Valuation:
$1,093,300
Permit #:
M00908902-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
142 Watts St, New York, NY, 10013
2024-11-22
Mechanical work filed in conjunction with the renovation of an existing one family dwelling as per plans. architectural plumbing and sprinkler work filed under separate applications. no change of use occupancy or egress
Valuation:
$100,001
Permit #:
M00908925-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
275 W 10th St, New York, NY, 10014
2023-10-22
Combination and renovation of apartment 8d&8h. architectural work as per plans. plumbing and mechanical work filed under separate applications. no change of use occupancy or egress
Valuation:
$439,992
Permit #:
M00875421-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
248 E 68th St, New York, NY, 10065
2022-10-22
Renovation of an existing townhouse as per plans. mechanical and plumbing work filed as per plans. no change in use egress or occupancy
Valuation:
$308,506
Permit #:
M00723679-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
275 W 10th St, New York, NY, 10014
2023-10-22
Mechanical work filed in conjunction with the combination and renovation of two dwelling units. architectural and plumbing filed under a separate application. no change of use occupancy or egress
Valuation:
$100,000
Permit #:
M00875424-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
39 5th Ave, New York, NY, 10003
2022-10-22
Combination and renovation of two dwelling units. architectural work as per plans. mechanical plumbing and structural work filed under separate applications. no change of use occupancy or egress
Valuation:
$435,000
Permit #:
M00583811-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
20 E 10th St, New York, NY, 10003
2024-11-22
Installation of mechanical unit and associated ductwork and piping in portion of the cellar as per plans filed herewith. no change to occupancy use or egress
Valuation:
$12,000
Permit #:
M01042082-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
53 W 53rd St, New York, NY, 10019
2024-11-22
General construction as shown on the plans
Valuation:
$446,400
Permit #:
M01031944-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
248 E 68th St, New York, NY, 10065
2023-07-14
Filing herewith for hvac modifications within an existing private residence. plumbing and architectural work filed under separate applications
Valuation:
$59,200
Permit #:
M00723683-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
51 5th Ave, New York, NY, 10003
2025-12-29
Renovation of an existing dwelling unit. architectural work as per plans. no change of use occupancy or egress
Valuation:
$41,970
Permit #:
M01266740-I1-GC
Status:
approved
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
Structural
39 5th Ave, New York, NY, 10003
2022-10-22
New convenience stair filed in conjunction with the renovation and combination of two dwelling units. structural work as per plans. architectural mechanical and plumbing work filed under separate applications. no change of use occupancy or egress
Valuation:
$20,000
Permit #:
M00617515-I1-GC-CX
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
39 5th Ave, New York, NY, 10003
2022-10-22
Mechanical work filed in conjunction with the renovation of combination of two dwelling units. architectural plumbing and structural work filed under separate applications. no change of use occupancy or egress
Valuation:
$30,000
Permit #:
M00583900-I1-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
20 E 10th St, New York, NY, 10003
2024-11-22
General construction associated with the renovation of the basement as per plans filed herewith. no change to occupancy use or egress
Valuation:
$5,400
Permit #:
M01041927-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
General construction
25 W 54th St, New York, NY, 10019
2022-07-14
Architectural work filed for enclosure of existing electrical conduit in 2 hr rated shaft wall. no change in use occupancy or egress
Valuation:
$85,000
Permit #:
M00489200-I1-GC
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical systems
53 W 53rd St, New York, NY, 10019
2024-11-22
Minor duct work as shown on the plans
Valuation:
$15,000
Permit #:
M01031944-S3-MS
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A

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