David Beckham’s family has spent the past 18 months trying to turn their £31.5 million London mansion into a more comfortable residence, but their recent attempts to install air conditioning in five rooms are being strongly opposed by their next-door neighbors. One neighbor recently claimed that the installation will negatively affect the home’s “historic character,” and asked the Royal Borough of Kensington and Chelsea Council to deny the Beckhams’ air conditioning application.

The Beckhams’ plans for “internal alterations at all levels” were approved by the council in February, allowing the family to enlarge their home’s lower ground floor wine cellar, install a retractable cinema screen, and remove a third-floor guest bathroom to form an extended bedroom and sitting room. Their neighbors did not seemingly mind any of those changes, but they wrote a strongly worded letter to the council upon hearing the family’s plans to install air conditioning in five rooms.

“The council must identifed (sic) our deep concerns about all adverse impacts on living conditions from noise, vibration, dirt, pollution and dust from construction and from associated traffic, in addition to concerns about impacts on drainage, on appearance and landscape, on structural stability, and on historic buildings,” wrote one of their neighbors, after complaining that the air conditioning alterations will “affect the historic character of the Victorian house of the streets.”

Estate agent Becky Fatemi believes the Beckhams’ intended alterations will help make the Holland Park mansion a “trophy home,” and promises they will all be “in good taste” and help increase its property value to £42 million.