Owning your own home

So not sure if this belongs in here of the DIY thread but here goes.

Say you saw a house you really liked and it was within your budget but you wanted to put an extension on, which cost 20k? How would you typically re mortgage to afford this? Could you buy the house with the intention of adding that and the bank would lend you more? Or do you buy the house then remortgage after a couple of years?

I'm only asking because we've seen some lovely Victorian terraces that would look great with a side return off the kitchen to give us more downstairs space.

Probably you would take out a mortgage for the purchase and then arrange additional borrowing come the time you are ready to extend. It may be however, particularly if there's not much equity in the property, you have to fund the extension elsewhere (personal loan or the like) and then increase your borrowing once the extension work has increased the value of the property.

http://lmgtfy.com/?q=increasing+borrowing+mortgages