What this means for the deal
- Begin with the operative lease definition and amendment chain; do not substitute a generic idea of market rent.
- Keep asking terms, proposals, executed leases, broker opinions, appraisals and determinations in distinct evidence states.
- Choose opening face, average face or net-effective rent deliberately and disclose how inducements and rent steps are treated.
- Explain the direction, amount, rationale and source of every adjustment from a comparable to the subject.
- Treat software output as a planning scenario—not a contractual rent determination, appraisal or arbitration prediction.
Define the rent question before collecting numbers
A lease may use fair market rent, market rent, fair rental value or another defined term. The label alone does not establish the test. The clause can prescribe the premises, valuation date, assumed term, permitted use, condition, tenant covenant, included services, renewal rights, inducement treatment, excluded improvements, minimum or maximum and the process for resolving disagreement.
Review the complete executed document chain and every cross-reference. Record the operative source, exact section, required assumptions, exclusions, process dates and decision owner. Legal counsel should determine what the actual provision means and how it operates in the applicable jurisdiction. The workbench only models the inputs entered after that review.
| Control | What to capture | Why it changes the analysis |
|---|---|---|
| Valuation date | Exact date the rent speaks as of | Evidence may need a time adjustment |
| Premises | Actual space or assumed comparable premises | Area, configuration and improvements may differ |
| Term | Renewal length and any assumed remaining options | Short and long commitments can price differently |
| Inducements | Included, excluded or assumed package | Face and effective rent can diverge materially |
| Rights | Expansion, termination, exclusivity, parking and other terms | Economics and flexibility may not be equivalent |
| Limits | Floor, ceiling or relationship to prior rent | The contractual result may differ from the raw indication |
Do not let an asking term masquerade as an executed deal
Evidence can include executed leases, accepted proposals, current asking terms, broker research, appraisal material, expert determinations and arbitration awards. Each has a different status, context and level of verification. Preserve the type, source organization, exact reference, source date, commencement date and confidence assessment.
A single headline rate is rarely enough. Record area, term, start date, all rent steps, free-rent timing, tenant-improvement allowance, other monetary inducements, additional rent and the premises facts that matter to the subject. Mark whether the source and economics were checked, and preserve excluded evidence rather than deleting it from the file.
- Executed does not automatically mean comparable; asking does not automatically mean irrelevant.
- A proposal may be incomplete, conditional, expired or altered before execution.
- Confidential evidence must be handled under the organization’s authority, privacy and records rules.
- A source date is not the same as a commencement date or contractual valuation date.
- Older evidence needs context and a disclosed time analysis—not an automatic rejection or hidden update.
Opening face, average face and net effective answer different questions
Opening face rent is the first entered annual base-rent rate. Average face rent spreads all scheduled base rent over the entered area and term. Net-effective base rent also deducts entered base-rent abatement, tenant-improvement allowance and other monetary inducement before spreading the result. None of these is universally correct for every lease clause or professional assignment.
Use the actual rent-change timing. A rate can change monthly, annually, every five years or on exact dates. An annual average that ignores steps, odd terms or deferred concessions can distort the comparison. Keep additional rent separate from the base-rent indication unless the contractual test and professional analysis require another treatment; it can still remain visible in the downstream occupancy-cost scenario.
| Basis | Calculation concept | Use with care when |
|---|---|---|
| Opening face | First entered base-rent rate | Terms have different steps or inducements |
| Average face | Scheduled gross base rent ÷ area ÷ term years | Free rent and allowances differ |
| Net effective | Scheduled base rent less entered base abatement and monetary inducements, spread over area and term | The clause excludes some or all inducements |
Rate evidence is inseparable from the premises and rights behind it
Compare municipality, submarket, access, visibility, size, configuration, floor or unit position, building age and quality, improvements, measurement basis and any property-type-specific characteristics. Industrial analysis may require clear height, loading, yard, power, sprinklers and office percentage. Office analysis may emphasize class, floor plate, views, elevators, amenities and improvement condition. Retail analysis may emphasize frontage, pedestrian flow, access, co-tenancy, permitted use and exclusivity.
Record facts before assigning dollars. Some differences may not support a reliable quantified adjustment but still belong in the decision record. A comparable can remain useful for context while being excluded from the weighted reconciliation.
- Verify rentable and usable areas and the applicable measurement provision or standard.
- Distinguish landlord work, existing improvements and tenant-funded work.
- Compare legal rights and restrictions as well as physical characteristics.
- Do not assume a larger or newer property always commands a predictable adjustment.
- Keep source uncertainty separate from physical comparability.
Every adjustment needs a direction, amount, rationale and source
Use one consistent convention. In the workbench, a positive adjustment is added to the comparable when the subject warrants a higher rate; a negative adjustment is subtracted when the subject warrants a lower rate. For example, if a comparable building is entered as superior, the adjustment toward an inferior subject would normally be negative under that convention.
Record the category, plain-language label, dollars per square foot per year, rationale, evidence reference and verification state. Avoid burying a final conclusion inside a large ‘other’ adjustment. If the support is qualitative, preserve the issue as context rather than manufacturing numerical precision.
| Field | Question | Failure mode it prevents |
|---|---|---|
| Direction | Does the subject warrant more or less than the comparable? | Reversing the logic |
| Amount | What entered $/SF/YR change is applied? | Hidden arithmetic |
| Rationale | Why does this difference affect rent? | Unsupported judgment |
| Source | What evidence supports the amount? | Unrepeatable analysis |
| Verification | Who checked the support and when? | Treating a draft assumption as a fact |
Weights organize judgment; they do not remove it
Relative weights disclose how much influence each included adjusted indication receives. A weight of three has three times the influence of a weight of one; the tool normalizes all included weights to 100%. Weight can reflect relevance and evidence quality, but the reason belongs in the decision note.
The workbench shows the minimum and maximum included adjusted observations and the weighted average. A separate reconciliation adjustment can then be entered and explained. Keeping that adjustment separate prevents an analyst from changing individual comparables merely to force a desired conclusion. Contractual floors or ceilings apply only after the entered reconciliation step.
Carry the selected scenario through every entered rent change
A rent-reset conclusion often establishes only the opening rate. The economic effect depends on the complete reset term, exact escalation cadence, additional-rent assumptions, area and process cost. Build a current-rent path and a reset path on one entered horizon, then compare nominal and present-value occupancy cost.
Use the timing the actual lease or scenario requires: percentage or fixed-dollar changes with an entered first increase and repeat interval, one rate per lease year or exact lease-month steps. A ten-percent change every five years is not economically equivalent to a two-percent annual change merely because both are easy to describe.
- Keep process costs—appraisal, arbitration, legal and advisory—separate from rent.
- Do not treat a cash-flow scenario as a prediction of the final expert determination.
- Keep additional rent visible but separate when the rent definition addresses base rent only.
- Use sensitivities when the opening indication or escalation remains uncertain.
- Update the selected lease scenario when an actual agreement or determination replaces the planning case.
Negotiation, appraisal and arbitration create their own evidence and deadlines
Record proposal exchange, negotiation, expert appointment, submission, response, hearing or determination dates as separate controls. Capture expert qualifications, appointment mechanics, scope, information rights, cost allocation, finality language, interim rent and true-up treatment. The legal effect and exact deadlines require review of the complete clause and applicable law.
The Appraisal Institute of Canada states that its members performing professional services must comply with CUSPAP and that a formal market-rent opinion on a specific identifiable property falls within professional standards. That reinforces the boundary between an internal planning worksheet and a professional appraisal assignment. Use the appropriate qualified professional when the decision requires a formal opinion or contractual determination.
Close the loop from option right to final rent schedule
Export the evidence schedule, adjustment grid, reconciliation, issues and assumptions before a material exchange or approval. Retain the source materials in the organization’s controlled document system. The exported file should identify what was known on its date; later evidence should create a new reviewed version rather than silently rewriting the earlier position.
Connect the market-rent file to the option or rent-review right, Critical Dates, negotiation record, final amendment or determination, lease abstract, rent schedule, accounting inputs and portfolio forecast. When the final rent is documented, replace the planning scenario in downstream workflows and preserve the variance between the entered indication and resolved outcome.
- Assign one accountable owner and qualified reviewers.
- Keep excluded evidence and the reason for exclusion visible.
- Record who approved the position and their authority.
- Preserve interim payments and any final true-up calculation.
- Update every affected lease-administration and financial record after resolution.
Frequently asked questions
Does the workbench calculate fair market rent?+
No. It normalizes and calculates user-entered planning evidence. It does not discover transactions, verify sources, interpret the clause, perform an appraisal or determine contractual rent.
Is asking rent the same as market rent?+
No. Asking evidence records a requested term, not necessarily a completed transaction or contractual conclusion. It may still provide context when its status and limitations remain visible.
Should I compare face rent or net-effective rent?+
That depends on the contractual definition and the purpose of the analysis. Opening face, average face and net effective treat steps and inducements differently. Choose and disclose the basis rather than switching silently between them.
How do positive and negative adjustments work?+
In this workbench, add a positive amount to a comparable when the subject warrants a higher rate and subtract a negative amount when the subject warrants a lower rate. Every adjustment should retain its rationale and source.
Can I model a rent increase every five years instead of annually?+
Yes. Enter the first increase lease month and any repeat interval, or use exact lease-month rent steps. The monthly cash-flow engine does not force an annual cadence.
Does an entered floor or cap prove the clause applies that way?+
No. It is scenario arithmetic. Counsel should verify the source, units, timing, interaction with prior rent and legal effect before the limit is relied upon.
Why keep excluded comparables in the file?+
They preserve the evidence considered and the reason it did not influence the weighted reconciliation. Deleting them can make the decision path harder to audit later.
When do I need an appraiser?+
Use an appropriately qualified professional when the matter requires a formal market-rent opinion, appraisal, expert determination, arbitration support or another professional assignment. The contractual requirements and intended reliance also matter.
Where the factual guidance comes from
These links support narrow factual points in this guide. They do not replace review of the proposal, executed lease or advice for the actual transaction.
Appraisal Institute of Canada — CUSPAP 2026 ↗Official AIC overview of the Canadian Uniform Standards of Professional Appraisal Practice, including the effective 2026 edition and market-rent reporting context.Appraisal Institute of Canada — CUSPAP web version ↗Official standards text describing professional-service, reporting and real-property appraisal requirements. The workbench is not a CUSPAP appraisal report.Appraisal Institute of Canada — Arbitrating fair market rental in commercial rent reviews ↗AIC professional article discussing commercial rent-review concepts and arbitration context. It is educational material, not interpretation of a specific lease.Ontario — Renting commercial property in Ontario ↗Official provincial overview of commercial leasing and renewal or amendment context. It is not a national rent-review rule.CanLII — Ten Issues in Commercial Leasing ↗Canadian legal-education material illustrating a renewal provision tied to fair-market rent and arbitration. Use current primary law and advice for the actual matter.LeaseCalculator.ca — Calculation methodology ↗The platform’s calculation boundaries for lease schedules, present value, source states, comparable normalization and device-local exports.This guide is general educational information and financial-workflow support. It is not legal, tax, accounting, engineering, environmental, appraisal or brokerage advice. Verify source documents and obtain appropriate professional advice before acting.
