Neighborhoods › Park Slope › Building 3019812
Enlargement to 4 stories, est. $1.1M
777A Union Street, Brooklyn 11355 · Permit Entire
| Job | B01333669 (10 filings: I1, P1, S1, S6, S5, S7, P2, S2, S3, S4) · Alteration CO |
|---|---|
| Category | vertical enlargement |
| Estimated cost | $1,074,840 |
| Scale | 3 → 4 stories; 2 → 1 dwelling units; 5,512 sq ft |
| Work types | General Construction |
| Filed | Dec 15, 2025 |
| Professional | New Air Solution Inc. |
| Building | BIN 3019812 · BBL 3009530057 |
| Official record | DOB NOW job B01333669 |
DOB description
B01333669-I1: PROPOSED ENLARGEMENT OF AN EXISTING 2-STORY WITH BASEMENT AND CELLAR BUILDING. CONVERT EXISTING 2-FAMILY INTO A SINGLE-FAMILY. WORK IN OSP, CELLAR, BASEMENT, 1st THROUGH 3rd FLOOR, PENTHOUSE AND ROOF. AS PER PLAN. OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B01333669-P1: PROPOSED STRUCTURAL CONSTRUCTION FILING IN CONJUNCTION WITH GENERAL CONSTRUCTION JOB#: B01333669-I1.
B01333669-S1: PROPOSED STRUCTURAL CONSTRUCTION FILING IN CONJUNCTION WITH GENERAL CONSTRUCTION JOB#: B01333669-I1.
B01333669-S6: SUBMIT SPRINKLER WORK IN CONJUNCTION WITH DOB NOW GC JOB#: B01333669-I1.
B01333669-S5: PROPOSED PLUMBING WORK FOR A SINGLE FAMILY BUILDING. WORK AT OPEN SPACE, CELLAR, BASEMENT, 1st TO 3rd FLOOR, PENTHOUSE AND ROOF. AS PER PLAN. IN CONJUNCTION WITH DOB NOW JOB#: B01333669-I1.
B01333669-S7: PROPOSED MECHANICAL WORK FOR A SINGLE FAMILY BUILDING. WORK AT CELLAR, BASEMENT, 1st FLOOR TO 3rd FLOOR, PENTHOUSE & ROOF. AS PER PLAN. IN CONJUNCTION WITH DOB NOW GC JOB#: B01333669-I1.
B01333669-P2: PROPOSED FOUNDATION CONSTRUCTION FILING IN CONJUNCTION WITH ALT-CO JOB#: B01333669-I1.
B01333669-S2: PROPOSED FOUNDATION CONSTRUCTION FILING IN CONJUNCTION WITH ALT-CO JOB#: B01333669-I1.
B01333669-S3: FILE SOE APPLICATION IN CONJUNCTION WITH ALT-CO JOB#: B01333669-I1.
B01333669-S4: PROPOSED TEMPORARY CONSTRUCTION FENCE AT OPEN SPACE, INSTALL FENCE EXTENDING BEYOND 8 FEET OF THE FRONT PROPERTY LINE AND ALONG THE REAR YARD PROPERTY LINE. AS PRE PLAN. IN CONJUNCTION WITH GC JOB#: B01333669-I1.
Status timeline
- Dec 15, 2025 — New job filed (Permit Entire) B01333669-I1
- Feb 15, 2026 — New job filed (Permit Entire) B01333669-S5
- Feb 15, 2026 — New job filed (Permit Entire) B01333669-S7
- Feb 17, 2026 — New job filed (Permit Entire) B01333669-S4
- Feb 23, 2026 — Permit issued — work can start (Construction Fence) B01333669-S4
- Feb 24, 2026 — Permit issued — work can start (Permit Entire) B01333669-S4
- Feb 25, 2026 — New job filed (Permit Entire) B01333669-S1
- Feb 25, 2026 — New job filed (Permit Entire) B01333669-S2
- Feb 25, 2026 — New job filed (Permit Entire) B01333669-S3
- Mar 22, 2026 — Permit issued — work can start (Structural) B01333669-S1
- Mar 23, 2026 — Permit issued — work can start (Mechanical Systems) B01333669-S7
- Mar 24, 2026 — Permit issued — work can start (Permit Entire) B01333669-S7
- Mar 24, 2026 — New job filed (Permit Entire) B01333669-S6
- Mar 25, 2026 — Permit issued — work can start (Foundation) B01333669-S2
- May 12, 2026 — Permit issued — work can start (Support of Excavation) B01333669-S3
- May 13, 2026 — Permit issued — work can start (Permit Entire) B01333669-S3
- May 31, 2026 — Permit issued — work can start (Plumbing) B01333669-S5
- Aug 9, 2026 — Permit issued — work can start (General Construction) B01333669-I1
- Aug 10, 2026 — Permit issued — work can start (Permit Entire) B01333669-I1
- Sep 2, 2026 — New job filed (Approved) B01333669-P1
- Sep 2, 2026 — New job filed (Approved) B01333669-P2
- Sep 3, 2026 — Permit issued — work can start (Permit Entire) B01333669-S5
- Sep 22, 2026 — Plans approved (Approved) B01333669-P1
- Sep 22, 2026 — Permit issued — work can start (Permit Entire) B01333669-S1
- Sep 23, 2026 — Plans approved (Approved) B01333669-P2
- Sep 23, 2026 — Permit issued — work can start (Permit Entire) B01333669-S2
- Sep 24, 2026 — Permit issued — work can start (Sprinklers) B01333669-S6
- Sep 25, 2026 — Permit issued — work can start (Permit Entire) B01333669-S6
Work permits
| Permit | Work | Status | Issued | Expires |
|---|---|---|---|---|
| B01333669-S6-EW-SP | Sprinklers | Permit Issued | Sep 24, 2026 | Apr 30, 2027 |
| B01333669-I1-GC | General Construction | Permit Issued | Aug 9, 2026 | Dec 31, 2026 |
| B01333669-S5-PL | Plumbing | Permit Issued | May 31, 2026 | Feb 21, 2027 |
| B01333669-S3-SE | Support of Excavation | Permit Issued | May 12, 2026 | Jan 1, 2027 |
| B01333669-S2-FO | Foundation | Permit Issued | Mar 25, 2026 | Jan 1, 2027 |
| B01333669-S7-MS | Mechanical Systems | Permit Issued | Mar 23, 2026 | Jan 1, 2027 |
| B01333669-S1-ST | Structural | Permit Issued | Mar 22, 2026 | Jan 1, 2027 |
| B01333669-S4-FN | Construction Fence | Permit Issued | Feb 23, 2026 | Jan 1, 2027 |
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