Our Story
Borough & Ledger was founded on a simple belief: small building owners in New York City deserve the same institutional-grade management that large portfolios get — without the overhead, the indifference, or the excuses.
The Mission
Most property managers treat your building like a maintenance problem. We treat it like an investment. Every decision we make — from pricing a unit to selecting a tenant — is filtered through one question: does this maximize the long-term value of your asset?
We specialize exclusively in small multifamily properties across NYC's five boroughs. That focus isn't a limitation — it means we understand your market, your tenant pool, and your regulatory environment better than any generalist firm ever could.
We're not building an empire of thousands of doors. We're building a small book of well-managed buildings where every owner actually knows who we are and what we're doing.
Portfolio occupancy rate across managed units
Average days to fill a vacancy from listing to signed lease
Average annualized rent growth for units under management
Lost to uncontested violations with our compliance monitoring
How We Work
Three principles that shape every decision we make on your behalf.
Every recommendation we make has a return attached to it. Rent pricing, unit improvements, tenant selection — we run the numbers before we make a move. Gut feel doesn't manage a portfolio; data does.
You'll never wonder what's happening with your building. Monthly owner statements, proactive communication on vacancies, and clear explanations for every dollar spent. You own the asset — you deserve to understand it.
We intentionally limit the number of buildings we manage. When we take on a new client, we're committing real attention to their portfolio — not adding a number to a spreadsheet. If we're at capacity, we'll tell you.
Leadership
Founder & CEO
C. Mars founded Borough & Ledger with one conviction: that the owners of New York City's small multifamily buildings have been underserved for too long. Most management companies scale up and lose focus. We built this firm to stay small, stay sharp, and stay accountable to every owner in our book.
With deep roots in NYC real estate and a background in investment-oriented asset management, C. brings an ownership mindset to every building under management. The goal is never just to fill a vacancy — it's to position each unit, each building, and each portfolio for sustained growth.
Borough & Ledger operates under a New York State real estate broker's license, ensuring full compliance with NYS licensing requirements for property management and leasing activities.
Work With Us
Schedule a free portfolio review. We'll look at your current rent roll, flag revenue gaps, and show you exactly what better management looks like for your building.