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Get started21 Hartwort Close is a one-bedroom end-of-terrace house in Walnut Tree, Milton Keynes, Milton Keynes (MK7 7LJ). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 1983-1990 and council tax band B. The latest certificate (October 2019) shows a D (score 57), a step below the typical UK home. When first surveyed in November 2009 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Average to Good and lighting went from Average to Good. The recommended improvements would lift it to B (score 85), a 2-band jump. Main heating runs on electricity.
Held since January 2010 — that's 16 years off the open market, well above the local norm. Across the public record there are 4 sales, relatively high churn for a single property. Sale prices here have outpaced Milton Keynes HPI: 8.3% per year against 0% for the wider region. Today's modelled estimate of £192,000 sits 60% above the 2010 sale of £120,000. On a £-per-square-foot basis, the last sale (£248/sq ft) was about 104.2% above the typical sold price in the postcode. At 45 m² it sits well below the postcode median (68 m² across 23 EPCs), making it one of the more compact homes locally.
Recommended upgrades on file would lift this property by multiple EPC bands.
Sale price has at least doubled since 2000.
£192,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.3% per year over 9 years.
£120,000
Growth on file: 8.3% per year over 9 years.
Everything we know about this property, compiled into one in-depth, downloadable report.
21 Hartwort Close is notably below the street on floor area.
Price per m²
£2,667
Street avg £2,861
Floor Area
45 m²
Street avg 60 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Silverweed Court — bus stop.

Daytime· 07:00 – 23:00
55.5dB

Changes detected from historical EPC data
Windows upgraded, improving insulation
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
29 January 2010Most recent
£120,000
+4.3%over 4 years9 December 2005
£115,000
+59.8%over 3 years14 December 2001
£71,950
+27.3%over 1 year31 August 2000
£56,500
Median price across the last 5 sales in MK7 7LJ: £230,000 (2025–2021).
17 Hartwort Close Walnut Tree Milton Keynes
Sold Aug 2025
30 Hartwort Close Walnut Tree Milton Keynes
Sold Oct 2023
28 Hartwort Close Walnut Tree Milton Keynes
Sold Dec 2021
18 Hartwort Close Walnut Tree Milton Keynes
Sold Oct 2021
15 Hartwort Close Walnut Tree Milton Keynes
Sold Jun 2021
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CO₂ Emissions
3.8 t/year
Street avg 3.4 t/year
MK7 7LB
Closest school
0.3 km
Walton High. 19 schools nearby.
Night-time· 23:00 – 07:00
44.7dB