Carnegie House, 3, 503 Witan Gate, Milton Keynes, MK9 2DA

Carnegie House is a mid-terrace house in Milton Keynes (MK9 2DA). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 2007 onwards and council tax band C. At 46 m² this is the 7th smallest of 41 units on EPC record in Carnegie House, where floor areas span 44–82 m². The building's EPC ratings span C to B, with this unit at the bottom. The latest certificate (December 2025) shows a C (score 79), near the top of the C band. Earlier certificates rated it B (May 2009); the latest reading is one band lower. Between certificates, hot-water efficiency went from Very Poor to Average; while window efficiency dropped from Good to Average and main heating dropped from Good to Average. This certificate was lodged in the last six months, so the rating reflects current condition.

It hasn't traded since August 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Today's modelled estimate of £146,000 sits 104.4% above the 2007 sale of £71,433. On a £-per-square-foot basis, the last sale (£144/sq ft) was about 32.6% below the postcode norm. At 46 m² it's 19.3% smaller than the typical home in the postcode (57 m² median across 40 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 78% of similar EPCs).