20 Alder Copse, Horsham, RH12 1LD
About 20 Alder Copse
20 Alder Copse is a three-bedroom semi-detached house in Horsham (RH12 1LD). It has a recorded floor area of 82 m² (around 883 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (December 2025) shows a C (score 76), near the top of the C band. The rating has held steady at C across 2 certificates since July 2013. Between certificates, roof efficiency went from Good to Very Good and lighting went from Poor to Good; while window efficiency dropped from Average to Poor. This certificate was lodged in the last six months, so the rating reflects current condition.
Across 2003–2013, sale prices on this property compounded at 4.2% per year. Today's modelled estimate of £421,000 is 49.3% above the 2013 sale price. On a £-per-square-foot basis, the last sale (£319/sq ft) was about 25.4% above the typical sold price in the postcode. 13 years since the last transfer (October 2013).
Know exactly what you're buying at 20 Alder Copse
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
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Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
Energy performance
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Roof insulation improved
More low energy lighting installed
Planning history
20 Alder Copse has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at 20 Alder Copse
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
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Sales history & valuation
20 Alder Copse valuation sits well clear of the typical sold price in this postcode.
£421,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.2% per year over 10 years.
£282,000
Growth on file: 4.2% per year over 10 years.
Sales timeline
7 October 2013Most recent
£282,000
+50.0%over 9 years7 November 2003
£188,000
Median price across the last 5 sales in RH12 1LD: £300,000 (2025–2019).
Everything we know about 20 Alder Copse, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby
Versus other Alder Copse homes
On epc rating, 20 Alder Copse stands well clear of the street.
Price per m²
£3,439
Street avg £3,858
Floor Area
82 m²
Street avg 77 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
2.2 t/year
Street avg 3.5 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
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Tower Close — bus stop.
Closest school
0.7 km
Arunside School, Horsham. 11 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
49.0dB
Night-time· 23:00 – 07:00
39.0dB