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Brownfield Carry Cost Calculator

Brownfield remediation can take years of carry before shovel turns.

Land cost

Remediation cost

Remediation months

Annual carry rate %

Brownfield credit

Net brownfield cost

$2,000,000

Land carry cost

$600,000

Gross remediation + land carry

$2,400,000

How the math works

Land carry = land × rate × (months/12). Gross = remediation + carry. Net = gross − credits.

$4M × 10% × 1.5 = $600k carry + $1.8M remediation = $2.4M gross − $400k credit = $2M net.

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 Brownfield Carry Cost Calculator is built to give a quick, browser-based estimate for brownfield carry cost. Brownfield remediation can take years of carry before shovel turns. 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 brownfield carry cost 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 brownfield carry cost 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 land acquisition cost.
Enter remediation cost.
Enter remediation months.
Enter monthly carry rate %.
Enter brownfield credit available.
Read net brownfield carry.

Frequently Asked Questions

What's a brownfield?

Land with known or suspected environmental contamination from prior use — typically industrial (chemical, petroleum, manufacturing), gas station, dry cleaner, landfill, abandoned railroad right-of-way. EPA catalogs 450,000+ brownfields in US. Federal/state programs incentivize cleanup via liability protection, grants, and tax credits. Brownfield redevelopment has dramatically transformed urban cores — High Line in NYC, Chicago's South Works, Boston's Seaport were all brownfields.

Typical remediation cost?

Varies 10x by contamination type. Petroleum (UST removal): $50k-500k. Heavy metals (arsenic, lead): $200k-2M. Chlorinated solvents (dry cleaner): $500k-5M. PCBs (transformer): $1M-10M. Radiation: can run $20M+. Remediation typically 10-40% of land value but adds 40-200% to land value once cleaned and liability-released. Due diligence Phase I / Phase II environmental critical before purchase.

Remediation timeline?

Phase I (document review): 2-8 weeks. Phase II (sampling + lab): 8-16 weeks. Remediation plan approval: 3-12 months. Active remediation (dig+haul, pump+treat, in-situ): 6-36 months. Post-remediation monitoring: 2-10 years (background status). Get No Further Action letter from state environmental agency: 3-18 months after completion. Total: 3-7 years typically for material brownfields. Phased development can commence after initial clean but before full monitoring complete.

Brownfield credits?

Federal: 10-20% brownfield redevelopment tax credit (varies by tier), Section 198 expensing of remediation costs (up to 100% deduction). State: NY has 22% credit, NJ has 60% credit (capped), IL/IN/MI have tiered credits. Local: property tax abatement for 10-25 years. Combined credits often cover 40-70% of remediation cost — making brownfield redevelopment competitive with greenfield in many markets. File for all credits early; some have lookback periods.