Designed by Gartner Trovato, with interior styling by SJS Interiors, who completed the Jennifer Hawkins Newport residence, the two-storey duplex will be completed in 2024-5 and offers far-reaching views, house-like proportions and high-end fixtures.

This boutique development features two homes, each with a heated pool, lawn, garage and parking for four cars.

But only one is for sale: one occupies the entire top floor with a grandstand view of the fairy flowers, and the other half of the entrance level, where there is a basketball court, bedrooms and bathrooms - an ideal guest retreat.

The four-bedroom, three-bathroom, four-car garage home at 118A Bower Street will have 180-degree ocean views and is being offered for sale with intent through Jake Rowe of North Beach Agency with a guide price of $22 to $24 million.

The 472sqm title also includes a large terrace facing the view and a covered patio with a barbecue and level lawn.

There is also a shared footpath leading directly to the Manly to Shelly beach promenade.

The site has been the home of the Law family since 1971, when John Law, a well-known author and former Army officer working in military intelligence, acquired the double-storey brick house in a house exchange.

Now his sons are developing the block, with Jack keeping half and his brother Luke selling his half.

"It will be built to a high standard and have some of the best views on the northern beaches," says Jack.

Features include an exquisite kitchen with bespoke cabinetry, stone island bench and wine cellar at the rear of the pantry, soaring raked ceilings in the main living room and master bedroom, and a large luxury bathroom with skylight.

The master bedroom has a huge dressing room and ensuite.

The home also has wooden floors, ducted air conditioning and ample storage space in the garage for water tankers and sports equipment.

Most of the residential sites in Bower Street are leased from the Catholic Church, so it is very special to find freehold properties.