Opal House, Flat 27, 4 Merrivale Mews, Milton Keynes, MK9 2EL
About Opal House
Opal House is a one-bedroom detached house in Milton Keynes (MK9 2EL). It has a recorded floor area of 53 m² (around 567 sq ft), construction records dating it to 2007 onwards and council tax band B. The latest certificate (November 2009) returns a high B (score 87), putting the home a stone's throw from an A rating. Earlier certificates rated it A (January 2009); the latest reading is one band lower. Main heating runs on waste combustion. The latest certificate is from November 2009, so improvements made since then won't be reflected. At 53 m² this is the 3rd 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.
Across 2012–2015, sale prices on this property compounded at 9.6% per year. On a £-per-square-foot basis, the last sale (£353/sq ft) was about 24.7% above the typical sold price in the postcode. Last changed hands 11 years ago, in October 2015. At 53 m² it's 17.1% smaller than the typical home in the postcode (64 m² median across 24 EPCs).
What this property has
Inside
- Bedrooms1
- Bathrooms1
- Open-plan layoutYes
Outside
- ParkingUnderground
- BalconyYes
Building
- Central heatingYes
- ConciergeYes
Energy performance
Opal House's carbon output is low for the local stock.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 17 Nov 2019
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Get a survey for this property
Level 2 HomeBuyer Report
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Planning history
Opal House has no planning applications on record.
But the area is active
4 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
£197,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.6% per year over 3 years.
£200,000
Growth on file: 9.6% per year over 3 years.
Sales timeline
1 October 2015Most recent
£200,000
+35.6%over 3 years30 May 2012
£147,500
Median price across the last 5 sales in MK9 2EL: £235,000 (2022–2014).
Nearby sales in MK9 2EL
Opal House, Flat 21, 4 Merrivale Mews, Milton Keynes, MK9 2EL
Sold Aug 2022
£214,000Opal House, Flat 46, 4 Merrivale Mews, Milton Keynes, MK9 2EL
Sold Jan 2021
£250,000Opal House, Flat 14, 4 Merrivale Mews, Milton Keynes, MK9 2EL
Sold Dec 2019
£270,000Opal House, Flat 43, 4 Merrivale Mews, Milton Keynes, MK9 2EL
Sold Feb 2015
£235,000Opal House, Flat 36, 4 Merrivale Mews, Milton Keynes, MK9 2EL
Sold May 2014
£205,000
Versus other Merrivale Mews homes
Opal House outperforms the street on price per m² by a wide margin.
Price per m²
£3,799
Street avg £3,003
Floor Area
53 m²
Street avg 61 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
0.2 t/year
Street avg 1.2 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
13/mo
Rising year-on-year across the wider district.
Nearest stop
0.3 km
Central Business Exchange — bus stop.
Closest school
0.7 km
Oldbrook First School and Nursery. 31 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
53.9dB

Night-time· 23:00 – 07:00
41.1dB







