449 Mayfair Drive South, Brooklyn

Single family · built 1970 · Block 8607, Lot 9.

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Building permits

Major Renovation — Residential, filed Feb 14, 2024, estimated cost $1.4M, 1 unit in all, 3 stories, described as “Proposed three story single family new building with existing elements to remain.”
Alteration, filed Oct 25, 2021, described as “Proposed Excavation and Foundation work in conjunction with job number B01003621-I1. No change in use, egress, bulk, and/or occupancy.”
Alteration, filed Oct 25, 2021, described as “Proposed structural work in conjunction with job number B00519372-I1. No change in use, egress, bulk, and/or occupancy.”
Alteration, filed Aug 10, 2021, estimated cost $30K, described as “Filing for new plumbing work in-conjunction with alteration 1 DOB now job #:B00519372.”
Alteration, filed May 12, 2021, estimated cost $450K, described as “Proposed horizontal & vertical enlargement and interior renovation at basement, first & second floor with attic @ existing residential building with new roof. No change in use group, & occupancy group.”
Alteration, filed Feb 4, 2020, estimated cost $5K, described as “Installation of a construction fence around the four sides of the property as shown on the site plan. No change in use, egress or occupancy.”
Alteration, filed Oct 17, 2018, estimated cost $250K, described as “Installation of a construction fence for the proposed two story rear addition, new one story front addition and interior & exterior renovations.”

R2: floor area ratio 0.68 built, 0.75 allowed by base zoning.

Current FEMA flood map: zone X, minimal flood hazard. FEMA’s preliminary map: zone X, moderate risk: a 0.2% chance of flooding each year.

Open-market sales since 2016, from the Department of Finance’s sales files.