Brownstone & limestone townhouse management
Rowhouses from Park Slope to Bay Ridge, looked after by a family-run team that knows old buildings.
Brooklyn · Queens · Long Island · Updated October 2026
Windsor Fine Properties manages brownstone and limestone townhouses for individual owners in Brooklyn, and in Queens and on Long Island too. Whether you rent the whole house, live in the owner's duplex and rent the floors above, or live somewhere else entirely, we handle leasing, rent collection, repairs and the steady upkeep these older buildings need.
What makes a brownstone or limestone different from other homes to manage?
- The facade keeps the weather out. Brownstone is a soft sandstone that can flake and crack with age, and limestone fronts need careful cleaning and repointing. Small cracks let water in, so we look at the front and the stoop on routine visits and bring in masonry specialists when they are needed.
- Flat roofs, parapets and cornices. Most rowhouses have a flat roof behind a parapet, with a cornice along the top of the facade. Blocked drains and worn flashing are a common cause of water intrusion into the top-floor apartment, so roof checks are part of the seasonal routine.
- Shared walls. A leak, a pest problem or a renovation next door can reach your house through the party wall. We document conditions and coordinate with the neighbor when something crosses the property line.
- Older systems. Many townhouses run on older boilers, original plumbing stacks and wiring updated in stages over decades. We keep a record of what is there, schedule servicing before heat season and use licensed trades for anything beyond routine work.
- Different layouts. A townhouse can be one home, an owner's duplex with a rental above, or three or four separate apartments. The number of legal units changes which rules apply.
Is your townhouse in a historic district?
Much of Park Slope lies inside the Park Slope Historic District, and other Brooklyn rowhouse blocks are designated too. In a historic district, the Landmarks Preservation Commission (LPC) generally requires a permit before exterior work such as window replacement, masonry work or brownstone resurfacing. Ordinary maintenance, like replacing broken window glass or repainting in the existing color, generally does not.
When a repair touches the front or rear of the house, your architect or contractor can confirm whether LPC approval is needed before the work is scheduled.
Which rules commonly apply?
- If the house has three or more apartments, it is a multiple dwelling and must be registered with HPD every year. A one- or two-family house must also be registered if neither the owner nor an immediate family member lives there.
- Brownstones and limestones generally predate 1960, so NYC's lead-based paint law (Local Law 1) covers their rental apartments, with annual notices, safe work practices at turnover and record-keeping.
- For rented apartments, heat season (October 1 to May 31) sets indoor temperature minimums, and hot water must reach 120°F all year.
- The Facade Inspection & Safety Program applies to buildings taller than six stories, so most townhouses are not in it. Owners must still keep every facade in safe condition.
- Owners are responsible for the sidewalk in front of the house, including repairs and clearing snow and ice within set times after a snowfall.
General information, not legal or tax advice. Rules change, so confirm current requirements with the relevant agency or your attorney. Official sources are listed below.
Which Windsor services apply?
- Residential property management: the full day-to-day service for a single house
- Leasing & tenant screening: for the whole house or the rental floors
- Repairs, maintenance & 24/7 emergency line: insured vendors and detailed repair records
- Inspections & safety equipment checks: routine visits that catch facade and roof issues early
- Capital improvement oversight: for facade, roof and system projects
- NYC compliance support: registrations, notices and inspection deadlines
Where do we work with these owners?
Brooklyn: brownstones and limestones in Park Slope and South Slope, limestone and brick rowhouses in Bay Ridge, and the smaller brick and frame rowhouses of Windsor Terrace and Kensington. We also serve Brooklyn Heights, Cobble Hill, Carroll Gardens, Fort Greene, Clinton Hill and Prospect Heights.
Queens: attached brick rowhouses in neighborhoods such as Sunnyside and Jackson Heights share many of the same needs.
Long Island: rowhouses are rare in Nassau County and Suffolk County, but many townhouse owners also own a house there, and we can manage both.
Brownstone & limestone townhouses: frequently asked questions
Can you manage my brownstone if I live in the owner's duplex?
Yes. Many owners live in part of the house and rent the rest. We can manage just the rental apartments, with leasing, rent collection, repairs and monthly statements, while you keep living at home. We agree up front which shared items, like the boiler or the roof, we look after.
Do I need Landmarks approval to fix my stoop or windows?
If the house is an individual landmark or sits in a historic district, most exterior work, including window replacement, masonry work and brownstone resurfacing, generally needs an LPC permit before it starts. Ordinary maintenance, like replacing broken glass, generally does not. Your architect or contractor can confirm what applies before work is scheduled.
What usually goes wrong in an older townhouse?
Water is the most common issue: roof drains, parapet flashing, worn mortar joints and the edges of windows. Heating systems and older plumbing come next. Regular checks and quick repairs keep small problems small.
Does my two-family townhouse need to be registered with HPD?
HPD requires annual registration for a one- or two-family house when neither the owner nor an immediate family member lives there. Buildings with three or more apartments register every year either way. Tracking registration is part of our compliance support.
Can you oversee a facade or roof project?
Yes. Through our capital improvement oversight service we coordinate insured third-party contractors from scope to completion, track the budget and check the work. We don't do the construction ourselves.
How do I get started?
Send us a message through our contact form or call (646) 762-9242. Tell us the address, how many apartments the house has and how it is used today, and we will set up a time to talk.
Ready to talk about your property?
Tell us about the building and how it is used today, and we will set up a time to talk.
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