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Get startedCoolham House is a detached house in Coolham, Horsham, Horsham (RH13 8QN). It has a recorded floor area of 395 m² (around 4252 sq ft), construction records dating it to 1900-1929 and council tax band H. The latest certificate (January 2023) shows an E (score 54), well below the UK norm with real room to improve. When first surveyed in November 2018 the rating was G, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Good, window efficiency went from Very Poor to Good and hot-water efficiency went from Very Poor to Average. The recommended improvements would lift it to C (score 70), a 2-band jump. Main heating runs on oil.
At 395 m² the property is well over the postcode median (174 m² across 19 EPCs), placing it in the larger end of the local stock. 4 planning records sit against the property, 3 approved, 1 refused. Past consents include an extension and a porch, meaningful when judging how the property has evolved. On a £-per-square-foot basis, the last sale (£423/sq ft) was about 67.7% above the typical sold price in the postcode. Sold May 2023 for £1,800,000.
Coolham House's carbon output runs well above what efficient homes in the postcode produce.
A recent planning application at Coolham House was refused — worth checking the council file.
Application under Regulation 77 of the Conservation of Habitats and Species Regulations 2017
Latest sale on Coolham House was the highest on Land Registry record across the postcode.
£1,755,000
Modelled from EPC, postcode comparables.
£1,800,000
Recorded with HM Land Registry.
Coolham House outperforms the street on floor area by a wide margin.
Price per m²
£4,557
Street avg £3,821
Floor Area
395 m²
Street avg 177 m²
Habitable Rooms
11 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
Crossroads — bus stop.

Daytime· 07:00 – 23:00
46.1dB

Changes detected from historical EPC data
Fuel source changed
Heating controls upgraded for better temperature management
Hot water system upgraded
Single glazing replaced with double or better glazing
Roof insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Non Material Amendment to previously approved application DC/20/0953 (Erection of a single storey side and rear extension. Construction of an entrance porch and extension of main roof over existing flat roof) to allow for the omission of the approved rear extensions, and the demolition of the existing bay window to the rear elevation and replacement with bi-fold doors
2 more applications for this property
Join to see all planning history.
4 May 2023Most recent
£1,800,000
Median price across the last 5 sales in RH13 8QN: £710,000 (2025–2021).
The Old School House Billingshurst Road Coolham Horsham
Sold May 2025
1 Brockhurst Cottages Billingshurst Road Coolham Horsham
Sold Feb 2025
Chandos Billingshurst Road Coolham Horsham
Sold Dec 2024
Cobwebs Billingshurst Road Coolham Horsham
Sold Jun 2022
Byways Billingshurst Road Coolham Horsham
Sold Dec 2021
Street avg 6 rooms
CO₂ Emissions
16.0 t/year
Street avg 7.3 t/year
RH13 8JU
Closest school
0.5 km
William Penn School. 2 schools nearby.
Night-time· 23:00 – 07:00
40.1dB
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