Borrowing lump sum for extension. Remortgage, loan, other?

Smithson27866992

Hi everyone,
Could I have some advice please?  Brief financial outlay below:

Property value 325k
Outstanding mortgage 90k and 10 years left
Joint income 75k
We need 60-70K to modernise and extend property

What would be the best way to borrow this extra money to fund this?

lfc321

Extra borrowing on the mortgage likely to be the cheapest way, providing you are sure you can keep up the repayments (as obviously it is secured on your home). On the details provided, I wouldn't think the extra borrowing would be an issue given your equity and income. Depending on what repayments you can afford, you might need to extend the mortgage end date. 
Unsecured loans generally have higher interest rates than mortgages, although it would be worth shopping around to see what is on offer. But many lenders won't lend as much as you're looking for on a personal loan basis.