FAR Bonus Economic Value Calculator

FAR bonuses add buildable area. This calculator sizes.

Base FAR

Bonus FAR

Site SF

Rent per SF

Cap rate %

Bonus value

$22,909,091

Bonus SF

37,500

Bonus NOI

$1,260,000

How the math works

Bonus SF = site × bonus FAR. Net = bonus × efficiency (80%). NOI = net × rent. Value = NOI / cap.

25,000 SF × 1.5 FAR = 37,500 SF bonus × 80% = 30,000 SF net. 30k × $42 = $1.26M NOI. At 5.5% cap: $22.9M bonus value. Material — worth meeting bonus program requirements.

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 FAR Bonus Economic Value Calculator is built to give a quick, browser-based estimate for far bonus economic value. FAR bonuses add buildable area. This calculator sizes. 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 far bonus economic value 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 far bonus economic value 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 base FAR.
Enter bonus FAR.
Enter site SF.
Enter rent per SF.
Enter cap rate %.
Read bonus NOI and value.

Frequently Asked Questions

FAR basics?

Floor Area Ratio: buildable area / lot area. E.g., FAR 3.0 on 10,000 SF lot = 30,000 SF buildable. Higher FAR = more density permissible. FAR bonuses reward specific amenities or contributions (public plaza, affordable housing, historic preservation).

Bonus sources?

Affordable housing set-aside: +0.5-1.5 FAR typical. Public plaza/atrium: +0.5-1.0. Historic preservation: +0.5-1.0. Transit-oriented: +0.5-1.5. Green building: +0.25-0.75. Stackable in some jurisdictions.

Economic value?

Each FAR point on 10,000 SF site = 10,000 buildable SF. At $40/SF rent, 6% cap rate, 80% efficiency: $5.3M value per FAR point. Material economics — worth complying with bonus programs when feasible.