Keep your investment model separate from the evidence about the building. Sold prices, energy records and local context can inform your questions, but a letting appraisal, permission check and cost plan need their own evidence.
What to check.
Build your own cost model
Get an address-specific rent appraisal and quotations for likely costs. Include maintenance, management and periods without rent, using professional tax advice where needed.
Check the intended use
Discuss licensing, planning, lease restrictions and landlord obligations with the relevant authority and advisers. Do not assume a neighbouring rental establishes what is allowed here.
Review the energy position
Read the certificate and current landlord guidance, including whether the regulations apply and any valid exemptions. A future policy announcement is not the same as a current duty.
What the evidence cannot tell you.
HouseDossier does not estimate rental income, calculate investment yields or certify licensing or energy compliance. Area demographics and crime data must not be used to judge the suitability of an individual tenant.