MovingDay logo MovingDay
5 bed property, in The Roundhouse, £2,500,000
>

Sponsored Get a Survey — free quotes via ReallyMoving

5 bed detached house

The Roundhouse, Old Knebworth, Hertfordshire SG3
£2,500,000
-5.7%
FreeholdPeriod Property

Price History

Initial price £2,650,000
Feb 28, 2026 £2,500,000
Price Change -5.7%

The property is a remarkable five-bedroom house built on the site of a disused above-ground water tank, radiating ergonomically around a central tree-like core. It has a total area of 4,820 sq ft, with a three-level design and a sweeping irregular roofline. The house is constructed with handcrafted natural materials, including reclaimed and local materials, such as concrete, steel, and locally sourced wood from larch, ash, and oak trees. The building envelope is designed to collect rainwater and feature a clear water septic tank, wood-fired/electric range cooker, roof-top solar panels, and underfloor heating on all levels. The house also has 10kw of battery storage and is wired for high-speed internet connection.