In short: no, you cannot live in an investment property if you’ve purchased your property investment with a buy-to-let mortgage.
This is because living in an investment property will be in breach of your mortgage terms, which has been specifically designed for property investors to let to tenants.
The Financial Conduct Authority differentiates normal mortgages and BTL mortgages differently, which means that mortgage lenders will specify that your investment property should only be let to tenants.
Naturally, without tenants in your home, you won’t be generating the rental income needed to cover mortgage payments.
Without this expected rental income, you’ll likely be unable to cover the investment property loan, which will be a cause for concern for your investment property mortgage provider.
However, if you didn’t use a buy-to-let mortgage to purchase your rental property, then you’re free to live in the property for as long as you want.
This will mean you cannot earn income from tenants, however, and if there are currently tenants living in your investment property then you cannot evict them without proper reason or notice just so you can live there instead.
So while you may live in an investment property if you own it outright, the loss of income is often not worth it.