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Location and Projects

Address
23 APPLETREE LN, Norwalk, CT, 06850
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Karol Kostrzewski Construction

Serving Norwalk, Connecticut and neighboring areas, Karol Kostrzewski specializes in residential construction and remodeling projects. With 16 years of experience in the industry, Karol works with homeowners to update and improve existing properties, focusing on spaces such as kitchens, bathrooms, and living areas. Project experience includes interior renovations, custom carpentry, finish work, and general home improvements. Karol partners directly with clients throughout the construction process, from planning and material selection through execution. Clients in Norwalk and surrounding Fairfield County communities turn to Karol for skilled management of residential updates, structural repairs, and remodels tailored to individual needs and property styles.

Karol Kostrzewski Contact Information

Address: 23 APPLETREE LN, Norwalk, CT 06850 Edit

Karol Kostrzewski Norwalk

Quality

97
82nd percentile
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
Karol Kostrzewski has a BuildZoom score of 97, which places them above 82% of 12,093 contractors in Connecticut.

Activity

1 project
2025
1 project
2024
1 project
2023
Our building permit records indicate that Karol Kostrzewski has worked on at least 3.0 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.

Pricing

1 project
$50k-$100k
1 project
$250k-$500k
Value Not Public: 1.0 project
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 Karol Kostrzewski

Sort by: Notable Notable | Date Date | Job Value Job Value
Residential addition
2023-09-29
Remove right portion of existing single family house and construct 2 story addition with garage addition (need pe stamp)
Valuation:
$390,000
Permit #:
BLD-2023-02463
Status:
issued
Fee:
$4,001
Permit Type:
N/A
Building Type:
N/A
Residential alteration
2025-09-22
Interior renovation for kitchen bathroom miscellaneous interior renovations
Valuation:
$95,000
Permit #:
BLD-2025-01979
Status:
issued
Fee:
$975
Permit Type:
N/A
Building Type:
N/A
Residential addition
2021-05-10
Two-story addition for pool room with bedroom suite above with unfinished attic
Valuation:
$375,000
Permit #:
BLD-2021-01813
Status:
issued
Fee:
$3,848
Permit Type:
N/A
Building Type:
N/A
Building permit
2022-02-03
Kitchen remodeling and closing in side porch make it into living space using existing foundation
Valuation:
$95,000
Permit #:
B-22-162
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential alteration
2022-09-16
Interior renovation for structural renovation to install beam misc. interior renovations
Valuation:
$35,000
Permit #:
BLD-2022-02793
Status:
issued
Fee:
$359
Permit Type:
N/A
Building Type:
N/A
Residential alteration
2020-02-11
Interior renovation for new kitchen in same location (no structural work at this time)
Valuation:
$55,000
Permit #:
BLD-2018-83716
Status:
final
Fee:
$564
Permit Type:
N/A
Building Type:
N/A
Residential electric
2022-10-03
Remove wires from demolished walls addition 4 recessed lights
Valuation:
N/A
Permit #:
BLD-2022-02794
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential plumbing
2024-01-30
Rough plumbing waste water and vent lines to new fixtures. gas pipe fire place stove and water heater
Valuation:
N/A
Permit #:
BLD-2023-02466
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential hvac
2024-01-23
Installation of two carrier fan coils 2.5 tons two bryant sentry condenser units and all new ductwork installation of whole house bathroom fans dryer vents and kitchen hood
Valuation:
N/A
Permit #:
BLD-2023-02465
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential electric
2024-02-08
Addition - bedrooms bathrooms laundry kitchen garage
Valuation:
N/A
Permit #:
BLD-2023-02464
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential alteration
2012-12-27
Re-model kitchen and install pre-fab fireplace
Valuation:
$40,000
Permit #:
BLD-2012-74717
Status:
final
Fee:
$410
Permit Type:
N/A
Building Type:
N/A
Residence additions
2010-04-20
No Description Available
Valuation:
$175,000
Permit #:
10-193/000 000 BOO1 00
Status:
C.O. ISSUED
Fee:
$2,725
Permit Type:
Building permit
Building Type:
N/A

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