Looking at my first buy-to-let.....

[JCB123]

I'm looking at my first buy-to-let, but have no idea how it works.

Property is £85k, 3 Bed semi, worth (once tidied up) around £110k.

I have a house worth £185k with £75k equity, but not much cash to use as a deposit.

Can I use my equity without having to re-mortgage (I'm on a great rate), to set against a new BTL mortgage?

Rental should be around £550-650 per month.

Thanks in advance.....