[2] Lutyens built Marshcourt for Herbert "Johnnie" Johnson, a trader/stockjobber on the London Stock Exchange, where he had accumulated a fortune of half a million pounds.

[6] The exterior design of the house is Tudor, with mullioned and transomed windows,[7] and twisted brick chimneys.

[8] The north, entrance front on the higher ground is two-storey,[1] in an E-plan with the facades displaying predominantly horizontal lines.

[6] At the east end of the south front, a wing projects forward, enclosing a service courtyard.

In 1919, Herbert Johnson instigated the construction of the Grade II listed Stockbridge War Memorial, designed by Lutyens and unveiled in 1921 by Violet Johnson,[12] and King's Somborne War Memorial, also designed by Lutyens, unveiled in 1921 and Grade II listed.

[14] Violet Charlotte Johnson was awarded an MBE, for her services in the care of wounded soldiers, but died in 1921.

[21] Gardens with terraces, pools and pergolas surround the house, connected by paths paved in stone inset with herringbone pattern brickwork panels.

[23] The sunken garden has a rectangular pool containing a dolphin fountain and surrounded by concentric stone steps and flowerbeds.

[27] Marsh Court was used as the Churston residence of Sir Carmichael Clarke in "Agatha Christie's Poirot in the episode The A.B.C.