Refinancing IPs while looking to buy

I am chasing better rates for my 2 IPs but also looking to buy a PPOR.
Both are IPs in Melbourne, tenanted (for now anyway!), 70% LVR and income is pretty secure. The PPOR may take a while to find in current times and would max out my borrowing capacity.

If I were to buy something next week, what adverse effect will having just refinanced have on my PPOR borrowing capacity and deals? Am I best waiting and striking a deal for all through one lender?

 

It really depends on the specifics of your situation - but often refinancing existing liabilities can help in structuring the new purchase as there are a number of variables e.g. refinancing INV debt back to new 30 year term will aid in increasing borrowing capacity.

Some lenders will do better rates on the aggregate lending amount, plus there is some efficiency having multiple loans under one annual package (if applicable) & the soft benefit of having all your banking together (though some are not comfortable with that).