NORTH SIDE · HUNTERS POINT HISTORIC DISTRICT

21-53–21-55
45th Avenue

The mansard-roof pair.

Recorded construction date
1880s
Historic group
2 buildings
Architectural description
Second Empire
Recorded materials
Brick and slate mansards

Architectural descriptions draw on LPC’s 1968 designation report. Current condition, legal occupancy and alteration approvals require an address-specific review. These profiles are historical research, not listings.

What LPC recorded

At the eastern end of the north-side 45th Avenue inventory, LPC identified two Second Empire houses from the 1880s. Their historical description includes three stories, with the upper story contained in a slate mansard roof, and a basement below.

Read the details

A mansard roof has a steep lower slope that gives the top of the house its distinctive silhouette. The report described two dormers in each roof.

The roof is both an architectural feature and a weather enclosure. A purchase assessment should consider the assembly around dormers, roof edges and flashing rather than the appearance of the slate alone.

Questions to take to the showing

  • What do a roof specialist’s inspection and repair estimates say about slate, flashing and dormers?
  • Are proposed changes to the upper level consistent with documented use and an approvable scope?
  • What is known about prior roof repairs, permits and recurring water entry?

These questions are a research starting point, not findings of a defect or assurance about the property. For the full sequence—from lawful use to insurance—see the buyer’s guide.

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Compare another part of the district

44-70–44-78 23rd Street: the district turns the corner.

Historical source: Hunters Point Historic District designation report, LP-0450, May 15, 1968. Architectural information reflects that report, not a current survey.

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