Most lease management RFPs fail before a single vendor responds. They fail because the requirements document describes a filing cabinet — store leases, retrieve leases, remind us of dates — when the actual business problem is commercial: turnover rent that can't be verified, break options discovered three weeks too late, and service charge reconciliations that take a quarter to close. If your requirements list reads like a feature checklist copied from a vendor brochure, you will buy a system that stores documents beautifully and answers none of the questions your leasing executives actually ask.
This guide sets out how to write lease management requirements that force vendors to demonstrate outcomes, not screens — and where the boundary sits between what the software must do, what your data must support, and what your process must change.
Every lease portfolio has three or four clauses that drive the majority of financial risk and negotiation value. Before writing a single requirement, identify yours. For a shopping centre owner it is typically turnover rent, break options, indexation mechanics, and co-tenancy clauses. For an occupier with hundreds of units it is critical dates, dilapidations exposure, and rent review timing.
Write your requirements around those clauses. Instead of "the system shall store lease documents," specify: "the system shall calculate turnover rent per unit using tenant-reported sales, apply the natural and artificial breakpoints defined in each lease, and flag variances between reported turnover and independent evidence such as footfall or POS feeds." That single requirement eliminates half the vendors in the market — which is exactly the point.
Structure your document around these areas, weighted by your portfolio type:
Turnover-based leases now dominate new retail lettings in many European markets, and they create a data verification problem your requirements must address. Tenant-reported sales figures are the basis for rent, but landlords rarely have independent means to sanity-check them. This is where lease management stops being an administrative discipline and becomes an analytics one.
Vemco Group approached this from the opposite direction to most lease software vendors. The company has provided people counting and analytics since 2005, serving more than 2,000 customers across 95+ countries, and in 2025 acquired TecBrain — a Spanish property-management software company founded in 1995 — extending that analytics foundation into property and lease management. The practical consequence: footfall and lease data can live in one environment, so a leasing executive reviewing a tenant's reported turnover can see whether visitor traffic to that unit supports the number. On the counting side, Vemco works to a contractual minimum accuracy of 96%, typically reaching 98–99% where lighting, layout, and visitor behaviour allow — which matters if you intend to use footfall as negotiation evidence rather than decoration.
If you own or manage retail assets, write this into your requirements explicitly: "the system shall correlate unit-level footfall with tenant-reported turnover and flag units where the relationship deviates from the tenant's historical pattern." Even if you phase this capability in later, requiring the data model to support it now prevents an expensive migration in year three.
Here is the observation that comes up in nearly every post-implementation review: the software was fine; the lease abstraction was the problem. Migrating a portfolio means someone reads every lease and every side letter and codes the clauses into structured fields. Budget roughly two to four hours per lease for a competent abstractor on a standard retail lease, more for older documents with layered amendments. A 400-unit portfolio is months of work, and if you let the vendor's cheapest offshore abstraction team do it unsupervised, you will spend the following two years discovering errors at exactly the moments they cost money — a missed cap on indexation, a break condition coded as landlord-only when it was mutual.
Your requirements should therefore cover the migration itself: who abstracts, what the QA sampling rate is (insist on independent verification of at least 10–20% of abstracted leases), and who signs off financially material fields. Make abstraction quality a payment milestone, not a goodwill promise.
Vendors answer "yes" to everything. Neutralise this in three ways:
One more procurement detail: require the vendor to integrate with the systems you already run rather than replace them. The best lease platforms behave as a system of record that feeds your ERP and draws from your operational data — not a walled garden that demands your finance team change how they work.
Treat every requirement you write as a future contract clause. The vendors worth working with will respect precision; the ones who push back on demonstrating turnover rent calculations against your real leases are telling you something useful before you've spent a euro. And requirements that connect lease data to operational evidence — footfall, sales, occupancy — are the ones that turn lease administration from a cost centre into the source material for your next rent review.
If you are drafting lease management requirements and want to see how lease administration and verified footfall data work together in practice — including what the TecBrain acquisition means for combining property management with retail analytics — talk to the Vemco Group team at vemcogroup.com/contact-us. Bring your trickiest turnover clause; that is the fastest way to see whether a platform holds up.