21 Thornden, Cowfold, Horsham, RH13 8AG
About 21 Thornden
21 Thornden is a three-bedroom detached house in Cowfold, Horsham, Horsham (RH13 8AG). It has a recorded floor area of 97 m² (around 1044 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (May 2020) shows an E (score 47), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 70), a 2-band jump. Main heating runs on oil.
2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, a porch and a loft conversion, meaningful when judging how the property has evolved. Today's modelled estimate of £596,000 is 24.2% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£460/sq ft) was about 35.9% above the typical sold price in the postcode. At 97 m² it's 18.1% smaller than the typical home in the postcode (119 m² median across 12 EPCs). Most recent transfer: January 2021 at £480,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Inside
- Bedrooms3
- Bathrooms2
- EnsuiteYes
Outside
- Private gardenYes
Energy performance
21 Thornden's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
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Planning history
2 applications on record at 21 Thornden, Cowfold, Horsham, RH13 8AG
- Apr 2021Loft ConversionOutlineOutcome in report
Construction of a rear dormer (Certificate of Lawfulness - Proposed)
- Documents
- 12 docs on file
- Reference
- DC/21/0278
- More recent applications — locked
- PorchMay 2021Decision
Unlock 21 Thornden, Cowfold, Horsham, RH13 8AG's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 9 notable nearby
- The 29 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£596,000
Modelled from EPC, postcode comparables.
£480,000
Recorded with HM Land Registry.
Sales timeline
6 January 2021Most recent
£480,000
Median price across the last 5 sales in RH13 8AG: £560,000 (2025–2021).
Nearby sales in RH13 8AG
35 Thornden, Cowfold, Horsham, RH13 8AG
Sold Mar 2025
£560,00037 Thornden, Cowfold, Horsham, RH13 8AG
Sold Feb 2025
£532,50033 Thornden, Cowfold, Horsham, RH13 8AG
Sold Aug 2023
£550,00011 Thornden, Cowfold, Horsham, RH13 8AG
Sold Jun 2021
£675,00031 Thornden, Cowfold, Horsham, RH13 8AG
Sold Jan 2021
£560,000
Versus other Thornden homes
21 Thornden is notably below the street on epc rating.
Price per m²
£4,948
Street avg £5,583
Floor Area
97 m²
Street avg 127 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
6.4 t/year
Street avg 6.5 t/year
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The neighbourhood at a glance
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
Brook Farm — bus stop.
Closest school
0.3 km
St Peter's CofE (Aided) Primary School. 1 school 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
49.6dB

Night-time· 23:00 – 07:00
43.4dB







