A London architect has been ordered to pay over £71,000 in fines and costs for carrying out unauthorized renovations on a historic property, previously the home of renowned sculptor Sir Anthony Caro. The alterations to the Grade II* listed building, purchased by holistic architect Zoe Chan in 2017 for £4.1 million, were found to have caused "irreversible harm to the historic fabric of the building."

Chan, 40, transformed the property in Hampstead into a 'Ground House' wellness sanctuary, featuring clay walls, timber ceilings, meditation spaces, and a plunge pool. The property, part of a complex dating back to 1750, holds rare Grade II* listed status due to its historical and architectural significance.

In November 2025, Ms. Chan pleaded guilty to making alterations without planning permission or listed building consent. A district judge noted that Chan, described as a professional with property development experience, had been "reckless in failing to ask the relevant question - 'do I need permission?'"

In November 2025 Chan was prosecuted by Camden Council and ordered to pay £71,800 in fines and costs after pleading guilty to making alterations without listed building consent

The case has seen further complications, with a government planning inspector in July 2026 refusing to approve additional alterations to the roof, eaves, and dormer windows that were carried out without permission. The inspector concluded these changes harmed a "heritage asset" of the highest significance. Camden Council has stated it will take further action to ensure remedial works are undertaken to restore the building.

Formerly the home of celebrated British sculptor Sir Anthony Caro, the property holds rare Grade II* listed status, meaning it is legally protected for its exceptional historical and architectural significance

Ms. Chan maintains she has been restoring a family home that had been vacant and suffered unsympathetic alterations prior to her purchase. She stated her intention was always to restore the building with care, reinstating its historic character. She also mentioned that in 2018, urgent repairs were carried out to the cellar due to structural movement, which she accepts were done without prior consent, and that this matter has since been concluded.

The redesign includes internal walls made of clay dug from the garden. The extensive use of British-grown Douglas fir and reclaimed timber

Neighbors have also raised concerns about other works on the grounds, including a swimming pool allegedly built in place of an approved pond. Ms. Chan denies wrongdoing and is reportedly working with the council to find a resolution. Camden Council has emphasized its commitment to protecting the borough's heritage, stating, "We will not tolerate unlawful works that damage our borough's heritage."