Historic limestone mansion, Upper East Side

A historic limestone mansion on the Upper East Side, dated 2025. The Record covers 22 rooms and 347 items and lists $3,850,000 in improvements.

Among them: whole-house systems replacement covering security, climate, audio-visual, and lighting ($960,000); seven full baths and four powder rooms ($900,000); and a rebuilt primary kitchen and catering kitchen with walk-in closets ($520,000).

At this scale the systems come first. Security, climate, audio-visual, and lighting run through every floor, and the baths and kitchens are fitted to them.