A builder told Quinn that Meghan, who was pregnant with Archie at the time, oversaw much of the renovation work.
Upgrades reportedly included advanced soundproofing, underfloor heating and a copper bathtub.

Prince Harry later repaid the entire renovation cost after the controversy intensified.
Meghan and Harry were formally evicted from Frogmore Cottage in 2020 following their decision to step down as senior working royals and relocate to the United States.
They now live in a large Montecito estate with their two children — Archie, six, and Lilibet, four.
Frogmore Offered to Prince Andrew
After the Sussexes left, King Charles reportedly offered the property to his brother, Andrew Mountbatten-Windsor. However, Andrew is said to have turned it down, viewing it as a “demotion” from his long-time residence, Royal Lodge.
Last month, King Charles removed Andrew’s royal titles and instructed him to vacate the 30-room Windsor mansion over his association with Jeffrey Epstein.
Andrew and his ex-wife, Sarah Ferguson, had lived at Royal Lodge rent-free for nearly two decades. Though they have yet to leave, Buckingham Palace has stated that Andrew will move to the Sandringham estate “as soon as possible and practicable.”