21 Mentone Avenue is a four-bedroom detached house in Aspley Guise, Milton Keynes, Milton Keynes (MK17 8EQ). It has a recorded floor area of 226 m² (around 2430 sq ft), construction records dating it to 2007 onwards and council tax band G. The latest certificate (May 2009) shows a C (score 73). The latest certificate is from May 2009, so improvements made since then won't be reflected.
Held since December 2009 — that's 16 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. Sale prices here have outpaced Milton Keynes HPI: 17.6% per year against 0% for the wider region. Today's modelled estimate of £1,194,000 is 27.8% above the 2009 sale price. On a £-per-square-foot basis, the last sale (£384/sq ft) was about 29.8% above the typical sold price in the postcode. At 226 m² the property is well over the postcode median (173 m² across 18 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 78% of similar EPCs). 2 planning records sit against the property, 2 approved, 0 refused.
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
21 Mentone Avenue's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 29 May 2019
Full: Erection of detached dwelling
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
21 Mentone Avenue has more than quadrupled in price since its earliest registered sale in 1999.
£1,194,000
Modelled from EPC, postcode comparables and a sale-price growth of 17.6% per year over 11 years.
£934,000
Growth on file: 17.6% per year over 11 years.
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
On epc rating, 21 Mentone Avenue stands well clear of the street.
Price per m²
£4,138
Street avg £4,325
Floor Area
226 m²
Street avg 180 m²
Habitable Rooms
7 rooms
Street avg 7 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km

Daytime· 07:00 – 23:00
45.0dB

Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Full: Erection of detached dwelling following demolition of existing bungalow and garage
30-day money-back guarantee
14 December 2009Most recent
£934,000
+149.1%over 2 years14 February 2007
£375,000
+127.3%over 7 years31 March 1999
£165,000
Median price across the last 5 sales in MK17 8EQ: £935,000 (2025–2019).
9 Mentone Avenue Aspley Guise Milton Keynes
Sold Aug 2025
10 Mentone Avenue Aspley Guise Milton Keynes
Sold Mar 2024
19 Mentone Avenue Aspley Guise Milton Keynes
Sold Dec 2021
6 Mentone Avenue Aspley Guise Milton Keynes
Sold Feb 2021
14 Mentone Avenue Aspley Guise Milton Keynes
Sold May 2019

CO₂ Emissions
6.4 t/year
Street avg 7.9 t/year
MK17 8FQ
Duke Street — bus stop.
Closest school
0.9 km
Aspley Guise Village School. 6 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Night-time· 23:00 – 07:00
36.4dB