Opal House, Flat 16, 4 Merrivale Mews, Milton Keynes, MK9 2EL

Opal House is a two-bedroom mid-terrace house in Milton Keynes (MK9 2EL). It has a recorded floor area of 63 m² (around 678 sq ft), construction records dating it to 2007-2011 and council tax band C. The latest certificate (April 2024) returns a B (score 82), comfortably above the UK average. The rating has held steady at B across 2 certificates since July 2009. Between certificates, lighting went from Average to Very Good; while window efficiency dropped from Very Good to Good and hot-water efficiency dropped from Very Good to Good. At 63 m² this is the 7th smallest of 25 units on EPC record in Opal House, where floor areas span 52–70 m². The building's EPC ratings span C to B, with this unit at the top. Other recorded features include a balcony and notable views.

Held since August 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £199,000 is 42.1% above the 2009 sale price. On a £-per-square-foot basis, the last sale (£206/sq ft) was about 27.1% below the postcode norm.