2024
868 Boston Post Rd
Darien, CT- 2024Miscellaneous
Miscellaneous.
$2K - 2024Addition
Commercial additions and alterations.
$60K
Local provider profile
Karol Kostrzewski
Documented work across Connecticut based on attributed municipal records.
Reported work volume$4.6MDocumented jobs
Average project$328KWhere values are reported
First observed2017Available dataset
Categories6Observed work types
Enriched provider details
Provider information
Supplemental data supplied by FullContact and stored separately from public records.
FullContact query stored 2026.
Contact information
Details found in public records
These details have not necessarily been claimed or independently confirmed by the provider.
- Phone
- (203)391-1289source record
- [email protected]source record
Work history
Documented work by property
Individual records are grouped by address. Totals include only values reported in public records and may not equal final construction cost.
2024
1 Swifts Ln
Darien, CT- 2024Addition
Residential additions and alterations.
$950K
2024
12 Scout Trl
Darien, CT- 2024Dwelling
Dwelling.
$1.1M
2024
6 Hunters Ln
Norwalk, CT- 2024Addition
2 story addition over existing footprint over garage, new bathroom, closet, 11 new windows and new entrance.
$200K
2023
9 Little Brook Rd
Norwalk, CT- 2023Renovation
Interior renovations to the first-floor kitchen, 1 full bathroom, and ½ bath; add a laundry room; second floor over the existing footprint, with 2 full bathrooms and 3 bedrooms.
$350K
2022
104 Meadow
Greenwich, CT- 2022Plumbing
PLU
2022
104 Meadow Rd
Greenwich, CT- 2022Mechanical
HVAC Work
2022
46 Nathan Hale Dr
Stamford, CT- 2022Building Permit
Kitchen remodeling and closing in the side porch to make it living space using the existing foundation.
$95K
2022
104 Meadow Rd 1353 King
Greenwich, CT- 2022BUI - Residential F/O -
Add To Alter New
$1.4M
2022
227 Hollow Tree Ridge Rd
Darien, CT- 2022Finish Space - Attic/Basement
Finish space in attic and basement.
$75K - 2021Renovation
Kitchen and Power Room Remodel.
$73K
2021
3 Waterbury Ln
Darien, CT- 2021Renovation
Kitchen Remodel.
$90K
2020
199 Ely Ave
Norwalk, CT- 2020Demolition
Demo 2 car detached carage.
$4K
2019
201 Ely Ave
Norwalk, CT- 2019Renovation
Reconfigure exist. single-family residence with 1st and second floor additions - first floor includes kitchen, liv. Room, dining room, 1 bedroom with full bath, laundry and side covered porch. - second floor includes 2 bedrms, 1 full bath and master suite - attic to remain unf. - no changes to front porch or front of house. Bsmt. Unf.
$175K
2017
15 Getner Trl
Norwalk, CT- 2017Renovation
Construct a 16-by-16-foot rear deck for a single-family residence.
$12K