Finance category

Mortgage, loan, investing, tax, and money calculators.

Browse finance

Transferable Development Rights Calculator

TDR enables building height/density transfer between properties.

TDR quantity (SF)

Per-SF receiving value

TDR premium over sending %

Transaction cost %

Net TDR value

$19,000,000

Gross TDR value

$20,000,000

Net value per SF

$380.00

How the math works

Gross = TDR SF × receiving value. Net = gross − transaction cost.

50k × $400 = $20M gross − 5% = $19M net. $380/SF net value.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Transferable Development Rights Calculator is built to give a quick, browser-based estimate for transferable development rights. TDR enables building height/density transfer between properties. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the transferable development rights result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this transferable development rights estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter TDR quantity (SF).
Enter per-SF value at receiving site.
Enter TDR premium (over sending value) %.
Enter transaction cost %.
Read TDR transaction value.

Frequently Asked Questions

What are TDRs?

Transferable Development Rights: unused zoning capacity (height, density, FAR) from one property (the 'sending site') transferred to another ('receiving site'). Used to preserve historic buildings, protect open space, redirect development. NYC has most sophisticated TDR market. Other markets: Washington DC, San Francisco, Seattle, portions of CA, NJ. Farm-to-city TDR programs also exist (rural preservation funds urban development).

TDR pricing?

Receiving site value − sending site remaining value = TDR economic value. NYC midtown: $200-800/SF of TDR rights. Washington DC Penn Quarter: $150-400/SF. SF Union Square: $300-700/SF. Premium to sending site because TDRs effectively 'activate' receiving site value. Transaction cost: 3-8% of TDR value (legal, appraisal, zoning approval). Complex negotiations; experienced zoning attorneys essential.

How do TDRs create value?

Sending site: cashes out unused zoning capacity. Historic building owner: gets market value for unbuildable rights. Receiving site developer: gets additional buildable SF. City: preserves landmark, grows urban fabric. Win-win-win in theory. In practice, complexity drives costs and delays. TDR banks (NYC, others) pool rights for easier transfer. Institutional investors increasingly participate in TDR markets.

When TDRs make sense?

For landmark property owner: unlocks value of unusable zoning (e.g., historic landmark can't grow but has FAR rights). For developer: when market demand justifies taller/denser building than base zoning allows. TDR transfer more valuable than rezoning when: rezoning politically infeasible, TDR available nearby. In soft markets: TDRs cheap. In boom markets: scarce, expensive. Timing matters.