The duke and duchess paid their respects with a surprise visit to New Zealand House.
The royals stepped out on Sunday to attend the christening of Harry's goddaughter, Lena Tindall.
The 10-bedroom cottage will reportedly include an eco-friendly green energy unit.
ET has reached out to Kensington Palace, which has no comment.
The Duke and Duchess of Sussex are expecting their first child next month!
The Duke and Duchess of Sussex's news comes as the two prepare for the arrival of their first child together.
ET's royal source says the Duchess of Sussex is looking to friends for advice during this new chapter.
A royal source tells ET that Meghan and Harry are 'expected to move into Frogmore relatively soon.'
The Duke of Sussex made his beloved wife, Meghan Markle, smile after crooning 'So Long, Farewell.'
With her due date reportedly coming up, the duchess' schedule is about to change.
Take a look at the duchess' reunion!
The Duchess of Sussex is around eight months pregnant.
The Duchess of Sussex spoke during a panel in London on Friday in honor of International Women's Day.
The Duke and Duchess of Sussex looked so in love!
