3 The Boundary, Oldbrook, Milton Keynes, MK6 2RT

3 The Boundary is a one-bedroom detached house in Oldbrook, Milton Keynes, Milton Keynes (MK6 2RT). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to 1983-1990 and council tax band A. At 56 m² this is the largest unit on EPC record across the building (43–56 m²). The building's EPC ratings span D to C, with this unit at the top. On EPC score it ranks first in the building (79 versus a worst of 68). Other recorded features include a balcony. The latest certificate (November 2025) shows a C (score 79), near the top of the C band. The rating has held steady at C across 3 certificates since April 2010. Between certificates, hot-water efficiency went from Average to Good and main heating went from Average to Good; while window efficiency dropped from Average to Poor and lighting dropped from Very Good to Good. This certificate was lodged in the last six months, so the rating reflects current condition.

Across 1998–2018, sale prices on this property compounded at 6.8% per year. Today's modelled estimate of £131,000 sits 149.5% above the 2018 sale of £52,500. On a £-per-square-foot basis, the last sale (£87/sq ft) was about 68.3% above the typical sold price in the postcode. At 56 m² it's 27.3% larger than the typical home in the postcode (44 m² median across 3 EPCs). Last sale on file: £52,500 in August 2018.