What is the story here?

According to the design of the house it is possible that it was built around the 1870s. The first houses that were built in Heidelberg were very similar to houses built in Grahamstown. The roof was a pitch roof with two chimneys, on each side of the house. The initial roof would have been a thatch roof with reed ceilings. The walls would of been plastered with lime mixed with sand or even with Cow Dung.

As the town progressed, goods were brought in by ox-wagon. The thatch roof was then replaced with corrugated iron and the ceilings and floors with Oregon Pine imported from the USA. The walls  plastered by using cement. At one time this area of Heidelberg was inhabited by Indians, before they relocating to Shalimar Ridge by the group areas act.
The company that sponsored the plaque, Sanmac Trust, has been operating in Heidelberg since 1985. 
(Source: Eugene Viljoen in the 27th April 2022 edition of the Heidelberg / Nigel Heraut)

​Source: Heidelberg Heritage Association - Article Post (Click to visit website)

​Source: Heidelberg Heritage Association Facebook Page - General (Click to visit website)