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Get startedAcorn House is a four-bedroom detached house in Coolham, Horsham, Horsham (RH13 8GR). It has a recorded floor area of 164 m² (around 1765 sq ft), construction records dating it to 1967-1975 and council tax band F. The latest certificate (March 2022) shows an E (score 47), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 75), a 2-band jump. Main heating runs on oil. Other recorded features include notable views. Records show the property has been extended at some point in its history.
Held since May 2003 — that's 23 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 Horsham HPI: 15.2% per year against 0% for the wider region. Today's modelled estimate of £685,000 sits 94.3% above the 2003 sale of £352,500. On a £-per-square-foot basis, the last sale (£200/sq ft) was about 31% below the postcode norm. At 164 m² the property is well over the postcode median (112 m² across 15 EPCs), placing it in the larger end of the local stock. One planning record on file: an extension approved in 2023. Past consents include an extension, meaningful when judging how the property has evolved.
Acorn House's carbon output runs well above what efficient homes in the postcode produce.
Acorn House has an approved single-storey rear extension on the planning record.
Extension: Single storey · Rear of property
Part demolition of ground floor rear wall and removal of existing lean-to. Erection of a single storey rear extension including alterations to rear and side extension walls and roof.
Acorn House has more than tripled in price since its earliest registered sale in 1995.
£685,000
Modelled from EPC, postcode comparables and a sale-price growth of 15.2% per year over 8 years.
£352,500
Growth on file: 15.2% per year over 8 years.
Acorn House outperforms the street on years held by a wide margin.
Price per m²
£2,149
Street avg £3,636
Floor Area
164 m²
Street avg 134 m²
Habitable Rooms
7 rooms
Street avg 6 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
0.2 km
Crossroads — bus stop.

Daytime· 07:00 – 23:00
47.3dB

8 May 2003Most recent
£352,500
+107.4%over 5 years23 January 1998
£170,000
+4.3%over 7 months7 July 1997
£163,000
+38.7%over 1 year9 August 1995
£117,500
Median price across the last 5 sales in RH13 8GR: £610,000 (2025–2019).
Baytrees Brooks Green Road Coolham Horsham
Sold Oct 2025
Oak Cottage Brooks Green Road Coolham Horsham
Sold Mar 2021
Lower Barn Brooks Green Road Coolham Horsham
Sold Oct 2020
Mill House Brooks Green Road Coolham Horsham
Sold Aug 2019
Baileys Brooks Green Road Coolham Horsham
Sold Oct 2017
CO₂ Emissions
8.9 t/year
Street avg 7.9 t/year
RH13 8HW
Closest school
0.0 km
William Penn School. 2 schools nearby.
Night-time· 23:00 – 07:00
40.8dB
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