Range from the cheapest replacement of a door frame £196 (London Window Painting Company based in W11) to the dearest replacement of a door frame £400 (1st & 2nd Fix Vasconstruct based in W12).
Comparing carpenter and joiners estimates for a new door frame gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to replace a door frame in W14 by posting a job with HaMuch and we will send it to carpenter and joiners in W14.

"Inside kitchen sliding door frame to be replaced. (sliding door frame to be provided). Painting of frame and skirting board. Can you please provide full quote."
W8