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Get startedBaymill is a three-bedroom detached house in Copsale, Horsham, Horsham (RH13 6QU). It has a recorded floor area of 123 m² (around 1324 sq ft), construction records dating it to 1991-1995 and council tax band F. The latest certificate (December 2012) shows an E (score 50), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since July 2009. Between certificates, roof efficiency went from Average to Good. The recommended improvements would lift it to B (score 81), a 3-band jump. Main heating runs on oil. The latest certificate is from December 2012, so improvements made since then won't be reflected. Other recorded features include notable views. Our model identifies extension potential, subject to local planning policy.
Held since August 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £722,000 sits 50.4% above the 2009 sale of £480,000. 3 planning records sit against the property, 2 approved, 1 refused. Past consents include a loft conversion and an extension, meaningful when judging how the property has evolved.
Baymill's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 10 Dec 2022
Loft conversion together with internal re-arrangements and garden shed
The latest sale fell during the post-2008 dip, often a low-water mark in price comparisons.
£722,000
Modelled from EPC, postcode comparables.
£480,000
Recorded with HM Land Registry.
On habitable rooms, Baymill runs well behind the street norm.
Price per m²
£3,902
Street avg £12,374
Floor Area
123 m²
Street avg 134 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
1.4 km
Millfield South — bus stop.

Daytime· 07:00 – 23:00
44.7dB

Changes detected from historical EPC data
Roof insulation improved
Are we missing something? Tell us about home improvements to help adjust your valuation.
Loft conversion with internal alterations to extend the dwelling house and erection of shed
1 more application for this property
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28 August 2009Most recent
£480,000
Median price across the last 5 sales in RH13 6QU: £785,000 (2018–2007).
CO₂ Emissions
6.8 t/year
Street avg 8.3 t/year
RH13 6NX
Closest school
2.1 km
St Andrew's CofE Primary School. 4 schools nearby.
Night-time· 23:00 – 07:00
36.6dB
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