How we research, write, review and update every guide and calculator on LeaseVault UK.
LeaseVault is owned, written and maintained by Rahul Tandon, an independent web developer and digital publisher. Every article is bylined to him, shows a "last reviewed" date, and ends with a list of the primary sources it relies on.
LeaseVault is an independent consumer information and software platform. It is not a firm of solicitors regulated by the SRA, and not a firm of chartered surveyors regulated by RICS. Our calculators model statutory formulas for initial budgeting only. For any actual transaction, instruct a specialist leasehold solicitor and a RICS-registered valuer.
Every guide is synthesised from primary sources: UK legislation (the Leasehold Reform, Housing and Urban Development Act 1993 and the Leasehold and Freehold Reform Act 2024), Lands Tribunal and First-tier Tribunal decisions, RICS professional guidance, and official government guidance from GOV.UK.
Where we cite statistics on buyer trends, tax rates or market conditions, we link to the original source — HM Land Registry, HM Treasury, the Home Office, or reputable property industry publications — rather than repeating unsourced figures.
Our lease extension and freehold purchase calculators apply the standard three-component statutory valuation model: capitalised ground rent, reversion value, and marriage value (where applicable), using the deferment rates established in Sportelli v Cadogan [2007]. The full methodology, including formulas and source citations, is published on our methodology page.
Calculator outputs are estimates for guidance only. We say so clearly on every calculator page and recommend a formal valuation by a RICS-registered surveyor before serving statutory notices.
Articles display a "last updated" date in the byline. We review core legislative and calculator-related content whenever there is a material legal change — such as the phased implementation of the Leasehold and Freehold Reform Act 2024 — and otherwise review high-traffic pages at least twice a year to keep figures, thresholds and fees current.
LeaseVault's calculators and guides are free to use. The site does not currently show third-party advertising; if that changes it will be labelled and will not influence content. On a small number of pages there are affiliate links to specialist services (such as currency transfer providers). Affiliate relationships never influence our calculator methodology or the factual content of our guides. Recommendations are disclosed where they appear.
If you believe an article or calculator contains an error — including solicitors, surveyors and other readers reporting a legislative update or a calculation discrepancy — email contact@leasevault.co.uk or use the contact form. We correct factual errors promptly and note significant corrections with an updated "last updated" date.