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LetComplianceLandlord & property management software
Editorial guide

Best insurance for converted house HMOs

A material change of risk (C3 to C4 or sui generis HMO) requires insurer notification mid-term or at renewal.

Reviewed by Erdem VolkanLast reviewed 6 August 2026

Not financial advice. Insurance is a regulated product. Compare quotes from FCA-authorised firms only.

LetCompliance is landlord software from £7.99 a month that runs the whole let (the advert, the tenancy, the rent and the tax). It records every policy against the property with its renewal date and reminds you 90, 30 and 7 days before it renews. It is not an insurer or a broker, and does not sell insurance. Get started

Who this is for

Investors converting terraces and semis to 5-6 bed HMOs.

Must-have cover points

  • Post-conversion rebuild valuation
  • Fire compartmentation documentation
  • HMO licence number on file

Watch out

Planning vs insurance

Unlawful use can invalidate cover even if buildings damage occurs.

How this compares

Article 4

Planning permission and insurance risk are separate but correlated.

FAQs

When must I update the insurer?

Before letting to increased occupancy or after structural works that change risk.

Does conversion works need separate cover?

Yes - contract works / JCT period often needs its own policy while on site.

Related compliance

Insurance sits alongside licensing, safety certificates and tenancy compliance.

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