| Starting point | A static precedent with assumptions about premises, repair, service charge, security of tenure and jurisdiction that may not match the deal. | A guided first draft built around the premises, rights, rent model, repair position, 1954 Act strategy, fit-out plan and jurisdiction. | An existing lease, heads of terms, side letter or linked paper that already contains live wording and concessions. |
| Best when | The letting is truly simple, low-risk and unusually close to the assumptions the template makes. | You need to build the right commercial lease from zero or replace a weak precedent before negotiation hardens. | The wording already exists and the real question is what obligations, pressure points or drafting errors already sit in the paper. |
| Main weakness | It cannot decide whether the structure, tax route, repair allocation or jurisdiction are right for the transaction. | It still needs human checking where the matter is unusual, institutional, heavily negotiated or strategically important. | It does not build a clean draft from nothing. It tests what is already on the table. |
| Output | A shell document that often needs heavy reworking before it is safe to negotiate from. | An editable first draft with stronger clause architecture around money, control, compliance and exit. | An issue list, risk explanation and likely redline agenda for the lease wording that already exists. |
| Typical next step | Manual patching, internal guesswork or solicitor redrafting after avoidable time has already been lost. | Internal approval, commercial alignment, negotiation and legal escalation only where the real exposure justifies it. | Acceptance, pushback, negotiated amendment or escalation if the current paper is too one-sided or structurally wrong. |
| Right Vordex route | Useful background only, not the destination. | Commercial Lease Generator UK. | Commercial Lease Review UK or Contract Risk Check. |