A blackened-steel staircase connects the two levels of a New York duplex by the firm Markzeff.
Dividing the stair wall’s raw brick from the painted top landing, a strip of blackened steel is set into a groove cut with a circular saw.
The dining table has a vintage industrial base that’s height-adjustable.
In the living area, a Hans Wegner chair meets one in the style of Gerrit Rietveld as well as French 19th-century mahogany settees upholstered in linen.
In the powder room, a Spanish vintage marble sink sits on a custom steel vanity.
Reclaimed oak lines the ceiling of the master suite.
Vintage pendant fixtures from South Africa hang above the kitchen island’s quartz-composite counter.
Blackened steel frames the doors to the master bathroom, with its Venetian plaster walls.
Enclosing a balcony created a solarium.
In a guest room, a?brass lamp sits on an oak cabinet.
A limestone slab with integral sinks tops a custom oak vanity in the master bathroom.
An Italian vintage leather-upholstered sofa backs up to a French 19th-century mahogany bed in the master bedroom, while a Poul Kjærholm chaise occupies a corner of the solarium.