Claims between July and September were at the topmost level for 12 years, arriving numbers last seen in the heatwaves of 2006 and 2003.
More than 10,000 occupants made claims worth £64m, but experts told residents not to panic is crash appear.
Laura Hughes of the Association of British Insurers said, “ There are many reasons why cracks may have occurred”.
The worst hit was South-Eastern England, where constructions are well-known for being structured on subsidence-prone clay soil. The gradual craving occurs while the ground beneath a building loses moisture and shrinks.
This can be affected by several features including extending dry spells that cause to dry soil, as well as trees and bushes which can soak significant volumes of water from the soil. Clay soils particularly are seen as weak, while dripping underground pipes because of problems with water mains and drains which can also cause the soil to soothe.
Laura Hughes said: “Insurers understand that this is a stressful time for affected homeowners and are providing widespread support to help with repairs. Get in touch with your insurer if you believe your home is experiencing subsidence and they’ll be on hand with the best expertise and the best technology.”
A gradual alert can include bangs suddenly surfacing in properties, perhaps around doors and windows and often presenting thicker than a 10p coin.