Prince William is reportedly moving his family to a home on the Windsor estate to be closer to the Queen.
The Cambridges are hoping to move to four-bed Adelaide Cottage later in the summer, it has been claimed.
It comes after the 96-year-old monarch was again snapped using a walking stick amid mobility issues.
She has also had to cancel public appearances due to ongoing health concerns, including not attending much of the Platinum Jubilee celebrations last weekend.
It would mean children Prince George, eight, Princess Charlotte, seven, and Prince Louis, four, could start school locally in September.
It’s said the home has no live-in staff and William and Kate’s aides would have to commute across - though it would not need renovating or extra security.
In comparison, Prince Harry and Meghan Markle's renovation of Frogmore Cottage, on the same grounds, cost the Sovereign Grant £2.4million.
Frogmore was converted into one home in 2019, having previously been five separate properties for staff working on the estate.
The Cambridges' move to Adelaide would not result in costly renovations.
It would also see the family’s apartments at Kensington Palace transformed into offices and 10-bed Anmer Hall in Norfolk reserved for retreats.
A source said the Cambriges are “very keen for a modest home” and feel the downsize cottage “fits the bill”.
They told the Sun: “They were adamant they didn’t want anything too showy or anything that needed renovating or extra security so as not to be a burden on the taxpayer.
“The three children will enjoy running around and playing in the gardens, which is the kind of life they enjoy so much when at Anmer Hall.
“They had no other demands than a pleasant family home close to schools and the Queen.”
The monarch did not take part in the traditional procession of Garter Knights and Ladies through the grounds of the Berkshire castle today.
Given her ongoing mobility issues, the decision was expected and in past years she has travelled by car to the place of worship.
Camilla was in the procession for the first time having been appointed a Royal Lady of the Order of the Garter.
Kensington Palace declined to comment when contacted by the Mirror.