Manhattan condos $1,629/sf 2%Manhattan co-ops $283K/room 5%Central Park perimeterPark Ave $478K/room 19%CPW $350K/room 5%Fifth Ave $501K/room 19%Billionaires' Row $4,272/sf 24%East Village $1,663/sf 10%
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220 Central Park South — Manhattan luxury real estate
Calculators

Manhattan real estate, with the local math.

Manhattan real estate runs on its own math — mansion tax cliffs, mortgage recording tax on condos, co-op flip taxes, SALT-cap interactions, and a thicket of transfer taxes at sale. Each calculator below is built around the local mechanics for the specific question it answers.

The Roebling Valuation — What's My Apartment Worth?

An evidence-first valuation for Manhattan co-ops and condos, built on a research warehouse of 330,000+ recorded Manhattan transactions across 13,000+ buildings. Shows the actual comparables behind the number, a backtested error band for your exact evidence profile, and a precise estimate only when the record has earned one — a range or a personal valuation otherwise.

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Buyer Closing Cost Calculator

Mansion tax, mortgage recording tax, title insurance, attorney, building fees — the full NYC closing stack for a purchase.

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Seller Closing Cost Calculator

Transfer taxes, broker commission, flip tax, attorney fees, and net proceeds at closing.

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NYC Mansion Tax Calculator

The 1%–3.9% cliff at $1M, $2M, $3M, $5M+. Full bracket table with cliff warnings and the savings on negotiating below each threshold.

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Rent vs Buy Calculator

Manhattan-specific math: mansion tax, mortgage recording tax, co-op flip tax, transfer taxes at sale, capital gains, SALT cap. Break-even year for your scenario.

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Co-op Affordability Calculator

Run your financials against real Manhattan co-op board thresholds: DTI ratios, post-closing liquidity, down payment minimums. See which tier of co-op you'd qualify for.

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Co-op Board Qualification Analysis

A preliminary analysis of how a Manhattan co-op board is likely to underwrite your application — DTI, post-close liquidity, financing %, bonus structure, ownership form. Returns a categorical risk profile plus the specific factors most likely to draw board scrutiny.

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Is This Co-op Financially Healthy?

Drop in the building's reserves, commercial income, underlying mortgage, maintenance trend, occupancy, and assessment history — get an institutional read on whether the building is on solid footing or showing stress signals. The diligence layer most buyers skip.

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REBNY Financial Statement Builder

Fill out the REBNY financial statement in your browser. Download a populated, board-ready .xlsx and see in real time the maximum Manhattan apartment price your profile supports under standard co-op underwriting (DTI, post-close liquidity, financing %). All financial data stays on your device — never transmitted.

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True Monthly Carrying Cost Calculator

What does this apartment actually cost per month? Models mortgage + maintenance + taxes + assessments + opportunity cost on deployed cash + amortized closing & resale friction. Three honest monthly figures, 5-year projection, and stress-test scenarios.

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Local Law 97 Calculator NYC

Type any NYC building address. Get reported emissions vs. the 2024–2029 and 2030–2034 caps, estimated annual penalty exposure, per-unit monthly impact, and three plausible ownership scenarios. Built on public NYC Open Data.

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Manhattan vs Suburbs Economics Calculator

Side-by-side economic comparison of a Manhattan apartment vs a high-end suburban house — Greenwich, Scarsdale, Bronxville, Rye, Westport, Short Hills, Montclair, Sands Point. Carrying costs, property taxes, private school, commute, renovation, and 10-year net housing position.

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Renovation Cost Estimator

Refresh, full renovation, or gut — model the all-in cost and timeline for renovating a Manhattan apartment. Soft costs, co-op overhead, and contingency built in.

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NYC Pied-à-Terre Tax Calculator

The NYC annual surcharge on non-primary residences — 0.8%–6.5% depending on property type, with 5-year cumulative exposure modeled.

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NYC Capital Gains Tax Calculator

Estimate the full tax stack on a Manhattan apartment sale: federal LTCG (0%/15%/20%), the 3.8% NIIT, NY State and NYC income tax. Models cost basis, capital improvements, and the Section 121 primary-residence exclusion.

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Beyond Manhattan

Closing costs in the resort & second-home markets.

The same buyer- and seller-side math, built on each market’s own transfer taxes and closing mechanics: the Hamptons’ Peconic Bay CPF, Aspen’s municipal RETT, Florida’s documentary stamp tax, and Wyoming’s near-zero closing stack.

Looking at a specific apartment?

Calculators get you the framework. A 30-minute consultation gets you the building-specific read — board posture, maintenance trend, flip tax structure, and the right negotiating posture for your apartment.

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