Effective rent calculator with rent-free months
Compare headline rent with rent-free months, rent discounts and separate occupancy costs.
Open calculator, method & CSV →E11 SPACE · OPEN METHODS
Resources & citation centre
Useful, inspectable rental comparisons for owners, writers and event-space operators. Read the method, test assumptions and cite the source.
Original tools with visible methods
Renewal or reletting: break-even calculator
Compare a renewal offer with vacancy and reletting costs over the same horizon.
Open calculator, method & CSV →What can be cited
Methods and labelled scenarios
Each tool has a permanent URL, version date, author, worked example, formula, limits and a reproducible CSV. Quote the assumptions with the result so a reader can check the arithmetic.
Practical original checklists
Our editorial guides cover venue enquiries, owner records and the difference between contractual rent, vacancy assumptions and collections.
Read the journal →Source, accuracy and reuse
E11 SPACE maintains these original comparison methods. Example inputs are deliberately labelled assumptions, not a survey, a transaction database or a valuation. We currently publish no original Hong Kong rental-market dataset.
Cite the method URL and version/date. Explain any changes you make. Our original formulas, explanations and generated scenario CSV may be quoted within the reuse terms; photographs and third-party content have separate rights.
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