Yr Ysgwrn, near Trawsfynydd, Gwynedd, houses the bard's National Eisteddfod chair, posthumously awarded at the annual Welsh cultural festival in 1917.
He died in action at Passchendaele, Belgium, six weeks before the festival.
Snowdonia National Park Authority said Yr Ysgwrn had inspired several of his most well-known poems. Work to restore the property begins this summer.
The park authority has received Â£2.8m in heritage lottery funding to safeguard the home and other buildings which belonged to Ellis Humphrey Evans, who wrote under the name Hedd Wyn.
Efforts to save Yr Ysgwrn, a Grade II* listed building, started after his nephew Gerald Williams raised concerns in 2009.
Project manager Sian Griffiths said: "What is vitally important is that we keep the atmosphere of Yr Ysgwrn."
The plans include opening the farmhouse to the public, including the buttery, pantry and bedrooms with interpretation focusing on the life and work of Hedd Wyn.
And the Beudy Llwyd (an old cow house) will be converted to include a reception, cafe and an exhibition room.
Plans to preserve the home of World War One poet Hedd Wyn and turn it into a heritage centre go on show on Saturday.