Second Story Addition at 221 Thornycroft Avenue, Staten Island
221 THORNYCROFT AVENUE, STATEN ISLAND, 10312 · Great Kills-Eltingville
Estimated Project Cost
$0
Structural
Issued
May 21, 2026
Expires
July 1, 2026
License
General Contractor
About This Project
This permit details a significant general construction project involving the addition of a second story to a property in the Great Kills-Eltingville neighborhood of Staten Island. Miscellaneous work throughout the existing structure is also included as per the submitted plans.
The permit was issued on May 21, 2026, with an estimated project cost of $305,650. TROOST BROS INC is the general contractor managing this extensive renovation.
What This Means For You
Homeowners in Great Kills-Eltingville considering a second-story addition should budget approximately $305,650 for such projects.
The Business That Did This Work
TROOST BROS INC
General Contractor · License #005511
470 CLOVE ROAD
4 permits filed · 2 neighborhoods
Permit Details
| Tracking Number | 120833588 |
| Work Permit # | S01376710-I1-GC-CX |
| Job Filing Number | — |
| Work Type | Structural |
| Status | Permit Issued |
| Job Description | NEW SECOND STORY ADDITION AND MISC. WORK THROUGHOUT AS INDICATED ON PLANS SUBMITTED HEREWITH |
| Floor / Unit | Basement, Floor Number(s) 1, Floor Number(s) 2 |
| Estimated Cost | $305,650 |
| Approved | April 14, 2026 |
| Issued | May 21, 2026 |
| Expires | July 1, 2026 |
| BBL | — |
| BIN | — |
Property Owner
Not Applicable
Gregory Weck
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