# 31-45 20th Avenue, Queens

Utility · Block 850, Lot 310.

On Umarelli: https://umarelli.org/nyc/4008500310/31-45-20-avenue

More construction in Astoria: https://umarelli.org/nyc/queens/astoria.md

## Building permits

- New Building — Non-residential, filed Jan 19, 2023, estimated cost $11.6M, 2 stories, described as “Proposed new building (Converter and service building) as per plan.”
- Alteration, filed Jul 22, 2025, estimated cost $165K, described as “Installation of micro piles, foundation and civil work for pull pit. No change to egress, occupancy or use.”
- Alteration, filed Mar 3, 2025, estimated cost $950K, described as “Proposed installation of back up control center enclosure on its foundation which has been filed under application # Q01143219-I1, approved and permitted. The mechanical system (HVAC) has been filed under application # Q01000770-I1.”
- Alteration, filed Jan 2, 2025, estimated cost $130K, described as “Installation of foundation and concrete ramp and slab for Backup Control Center, as per plan. No change to use, occupancy or egress.”
- Alteration, filed May 31, 2024, estimated cost $1.0M, described as “Propose general plumbing piping work at the new power plant (Converter Station). No changes to use, occupancy or egress.”
- Alteration, filed May 10, 2024, estimated cost $1K, described as “Installation of temporary system scaffold for worker access during construction. Temporary system scaffold shall comply with NYC BC Chapter 33. No change in use, egress, or occupancy.”
- Alteration, filed Apr 3, 2024, estimated cost $10K, described as “Propose to install Valve Hangers, all as per plans. No changes to occupancy or egress or use.”
- Alteration, filed Feb 21, 2024, estimated cost $750K, described as “Proposed HVAC units within auxiliary enclosures with associate piping and duct work. No change of use, egress or occupancy.”
- Alteration, filed Sep 25, 2023, estimated cost $1.3M, described as “Proposed equipment and storage enclosures, all as per plan. No change to use, egress or occupancy.”
- Alteration, filed Sep 25, 2023, estimated cost $650K, described as “Proposed Site structural support members, all as per plan. No change of use, egress or occupancy.”
- Alteration, filed Jul 5, 2023, estimated cost $350K, described as “Install structural frame for support of valve cooling equipment, all as per plan. No change of use, egress or occupancy.”
- Alteration, filed Jul 3, 2023, estimated cost $3.3M, described as “Installation of Valve cooling system for power plant, all as per plan. No change to use, occupancy or egress.”
- Alteration, filed Jul 3, 2023, estimated cost $1.2M, described as “Proposed sprinkler system and associated equipment and pumps for service building, storage and transformers enclosures, all as per plans. No change of use, occupancy or use.”
- Alteration, filed Jun 29, 2023, estimated cost $5.3M, described as “Proposed civil work for site utility, all as per plan. No change of use, occupancy or use.”
- Alteration, filed May 24, 2023, estimated cost $4.2M, described as “Proposed mechanical units and related duct work within building, all as per plan. No change to use, occupancy or egress.”
- Alteration, filed May 16, 2023, estimated cost $550K, described as “Proposed Plumbing fixtures and related piping for Service building, as per plan. No change to egress, occupancy or use.”
- Alteration, filed Apr 20, 2023, estimated cost $10.4M, described as “Proposed building steel framing in conjunction with NB # Q00803878. No change of use, occupancy or use.”
- Alteration, filed Apr 18, 2023, estimated cost $100K, described as “Proposed site drainage management and erosion and sediment control work, all as per plans. No change to use, occupancy or use.”
- Alteration, filed Dec 19, 2022, estimated cost $50K, described as “Installation of construction fence to protect site during full demolition of tanks, and administrative building.”
- Alteration, filed Dec 7, 2022, estimated cost $1.5M, described as “Proposed to install new retaining wall on site, as per plan. No change of use, occupancy or use.”
- Alteration, filed Dec 7, 2022, estimated cost $350K, described as “Proposed site preparation and pavement as per plans. No change of egress or use or occupancy.”
- Alteration, filed Dec 7, 2022, estimated cost $5.8M, described as “Proposed Civil work for access road and installing security fence and road guide rail, all as per plan.”
- Alteration, filed Dec 6, 2022, estimated cost $12.7M, described as “Proposed foundation (piles) for converter/service building as per plan.”
- Alteration, filed Dec 6, 2022, estimated cost $400K, described as “Proposed foundation/piles for Auxiliary enclosures as per plan. No change to occupancy or use or egress.”
- Alteration, filed Dec 6, 2022, estimated cost $6.4M, described as “Proposed foundation, pile and construction for support of Misc. equipment, including transformers, generator, water tower, fire pump, AC yard and AC filter, all as plan. no change to use and occupancy or egress.”

## Zoning

M3-1: floor area ratio 0.00 built, 2.00 allowed by base zoning.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

From New York City and Jersey City public records, refreshed within a day of each release. Sources: https://umarelli.org/sources. Methodology and corrections: https://umarelli.org/methodology