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Get started25 Thornden is a four-bedroom detached house in Cowfold, Horsham, Horsham (RH13 8AG). It has a recorded floor area of 128 m² (around 1378 sq ft), construction records dating it to 1967-1975 and council tax band F. The latest certificate (March 2025) shows a C (score 74). When first surveyed in August 2018 the rating was F, the property has climbed 3 bands since. Between certificates, roof efficiency went from Good to Very Good and lighting went from Very Poor to Average. The recommended improvements would push it to B (score 85). Main heating runs on oil.
Sale prices here have outpaced Horsham HPI: 5.1% per year against 0% for the wider region. Today's modelled estimate of £626,000 is 15.9% above the 2020 sale price. At 128 m² it's 17.4% larger than the typical home in the postcode (109 m² median across 12 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode. Most recent transfer: June 2020 at £540,000.
25 Thornden ranks among the most efficient homes in the postcode for energy use.
25 Thornden has more than doubled in price since the earliest registered sale in 1999.
£626,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.1% per year over 21 years.
£540,000
Growth on file: 5.1% per year over 21 years.
EPC Rating for 25 Thornden runs comfortably ahead of the street norm.
Price per m²
£4,219
Street avg £5,644
Floor Area
128 m²
Street avg 124 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.4 km

Daytime· 07:00 – 23:00
49.6dB

Changes detected from historical EPC data
More low energy lighting installed
Loft insulation upgraded to recommended levels
Are we missing something? Tell us about home improvements to help adjust your valuation.
26 June 2020Most recent
£540,000
+182.7%over 20 years17 September 1999
£191,000
Median price across the last 5 sales in RH13 8AG: £560,000 (2025–2021).
CO₂ Emissions
4.2 t/year
Street avg 6.7 t/year
RH13 8BU
Brook Farm — bus stop.
Closest school
0.3 km
St Peter's CofE (Aided) Primary School. 1 school nearby.
Night-time· 23:00 – 07:00
43.4dB
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