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Blended Lease Rate Calculator
Blend-and-extend renewals are landlord-tenant negotiations that take an existing lease's remaining term, blend it with new extension-term rent, and produce a single ongoing rate. Useful when the landlord wants to lock in WALT and the tenant wants to lock in current pricing — both sides share the market gap. This calculator computes the SF blended rate and the implied extension uplift.
Blended rate / SF
$34.29
Extension uplift / SF
$6.00
Uplift %
20.00%
Total blended term (yrs)
7
How the math works
Blended lease rate = weighted average of remaining-term rent and extension-term rent. Used in 'blend-and-extend' negotiations where landlord trades immediate rent visibility for committed extension term, allowing both sides to share market upside or downside.
In a soft market, blend-and-extend lets the landlord lock in a lower-than-asking renewal rent in exchange for term extension — protecting NOI and avoiding downtime.
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 Blended Lease Rate Calculator is built to give a quick, browser-based estimate for blended lease rate. Blend-and-extend renewals are landlord-tenant negotiations that take an existing lease's remaining term, blend it with new extension-term rent, and produce a single ongoing rate. Useful when the landlord wants to lock in WALT and the tenant wants to lock in current pricing — both sides share the market gap. This calculator computes the SF blended rate and the implied extension uplift. 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 blended lease rate 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 blended lease rate 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 current rent/SF and remaining lease term (years).
- Enter proposed extension rent/SF and extension term (years).
- Read the blended rate and the year-over-year uplift.
Frequently Asked Questions
When does blend-and-extend favor landlord?
When market rents are flat or rising and tenant has strong renewal probability — landlord locks in extended term and modestly higher rent without re-leasing risk or TI.
When does it favor tenant?
When market rents are falling — tenant locks in below-market extension rate that wouldn't be available at lease-end. Landlord avoids likely lower-rent renewal.
Does it include TI?
Often yes — landlord offers retention TI ($5-30/SF) and small free-rent concession in addition to blended rate.
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