Sasha Mielczarek and Sam Frost have secured a block of land at Retford Park, Bowral

Australia's favourite reality television couple, Sam Frost and her beau Sasha Mielczarek have secured a building block to construct their family home on the outskirts of Bowral.

"We are very excited," Sam and Sasha told their social media followers after their purchase.

The couple who found love on The Bachelorette secured the block in an upmarket NSW Southern Highlands housing subdivision.

The lot is in the historic Retford Park Estate which has been recently divided into building blocks ranging from 1000 sqm to 4.8 hectares.

The recently available sold out lots had been priced between $365,000 and $810,000 through Savills Residential Projects.

"I love building and all things construction," Sasha told me.

"Having grown up in the Southern Highlands and even going to high school there I'm pretty attached to the area," the former Oxleyan school captain said.

The couple have been together since Sam chose the 32 year old Sasha while filming the reality TV series The Bachelorette last October. 

Sasha manages a big building construction project at Nowra, with the couple regularly spotted relaxing at nearby Huskisson on Jervis Bay.

Sam is Bondi based after securing a breakfast radio co-hosting opportunity on 2DayFM radio with Rove McManus, having previously been marketing co-ordinator at the Mornington Peninsula Gardens & Lifestyle Magazine.

Bachelorette Sam Frost has Sasha's mother to thank for his appearance on the show.

"Mum was the one who put the application in for me," he once advised.

"She saw Sam previously on The Bachelor and thought we'd be a good match; she said Sam was the most down to earth."

The recent sales success of the fully serviced 179 residential lots on Bowral's historic Retford Park estate, has ensured the main homestead will be preserved in perpetuity for community access through the National Trust.

The main homestead Retford Park House remains the longtime home of philanthropist, James Fairfax, but will be preserved in perpetuity for the community with funds from the neighbouring residential development being directed into a trust which will pay for the long-term upkeep of the 1880s Italianate house and gardens.

This article was first published in the Sunday Telegraph.