Range from the cheapest removal of a chimney breast £400 (Plumbing & Gas Services based in SE25) to the dearest removal of a chimney breast £566 (Tracos based in CR0).
Comparing builders estimates for removing a chimney breast 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 remove a chimney breast in Cr07 by posting a job with HaMuch and we will send it to builders in Cr07.

"We are looking to remove/hollow out the chimney breast in our ground floor kitchen, while still supporting the equivalent chimney breast above on the first floor. Happy to hear from anyone able to provide a quote for this to be done sometime over the summer."
CROYDON
"Remove 4 x chimney breast + 2 x chimney stacks + make good roof, floor & walls"
CROYDON