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Get startedLongdown House is a detached house in Askett, Princes Risborough, Princes Risborough (HP27 9LX). It has a recorded floor area of 183 m² (around 1970 sq ft), construction records dating it to 2003-2006 and council tax band G. The latest certificate (May 2025) shows a C (score 78), near the top of the C band. The rating has held steady at C across 2 certificates since February 2011. Between certificates, lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Very Good to Average and main heating dropped from Very Good to Good. The recommended improvements would lift it to A (score 97), a 2-band jump.
Sale prices here have outpaced England HPI: 7% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£457/sq ft) was about 19.5% above the typical sold price in the postcode. At 183 m² the property is well over the postcode median (135 m² across 3 EPCs), placing it in the larger end of the local stock. Last sale on file: £900,000 in September 2019. Across the public record there are 4 sales, relatively high churn for a single property. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved.
Recommended upgrades on file would lift this property by multiple EPC bands.
Householder application for single storey front/side/rear extension & roof alteration to detached double garage to create single garage/storage/studio & utility rooms with guest accommodation in roofspace
Longdown House has more than doubled in price since the earliest registered sale in 2004.
£975,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.0% per year over 15 years.
£900,000
Growth on file: 7.0% per year over 15 years.
On epc rating, Longdown House stands well clear of the street.
EPC Rating
78 (C)
Street avg 64 (D)
Floor Area
183 m²
Street avg 126 m²
CO₂ Emissions
4.2 t/year
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Roundabout — bus stop.

Daytime· 07:00 – 23:00
49.9dB

Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Demolition of existing dwelling & erection of 1 x 4 bed dwelling & detached double garage (alternative to PP 04/05930/FUL)
13 September 2019Most recent
£900,000
+8.4%over 8 years28 April 2011
£830,000
+18.2%over 5 years20 September 2005
£702,000
+122.9%over 1 year8 April 2004
£315,000
Median price across the last 4 sales in HP27 9LX: £555,500 (2022–1999).
Street avg 5.1 t/year
Habitable Rooms
7 rooms
Street avg 7 rooms
Closest school
0.8 km
Monks Risborough CofE Primary School. 4 schools nearby.
Night-time· 23:00 – 07:00
41.5dB
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