18 Alder Copse, Horsham, RH12 1LD
About 18 Alder Copse
18 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 (April 2021) shows a C (score 69), just inside the C band. When first surveyed in April 2011 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good and lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to B (score 85). Period features are noted in the property record.
Across 2001–2021, sale prices on this property compounded at 8.3% per year. Today's modelled estimate of £422,000 is 18.9% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£402/sq ft) was about 59.3% above the typical sold price in the postcode. Sold June 2021 for £355,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 18 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
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Dining roomYes
- StudyYes
Outside
- Private gardenYes
- Parkingoff_street
Building
- Heating systemgas
- Period featuresYes
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
More low energy lighting installed
Planning history
18 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 18 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
30-day money-back guarantee
Sales history & valuation
18 Alder Copse has more than quadrupled in price since its earliest registered sale in 2001.
£422,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.3% per year over 20 years.
£355,000
Growth on file: 8.3% per year over 20 years.
Sales timeline
23 June 2021Most recent
£355,000
+56.4%over 9 years16 March 2012
£227,000
+211.0%over 10 years29 July 2001
£73,000
Median price across the last 5 sales in RH12 1LD: £295,000 (2025–2015).
Everything we know about 18 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 habitable rooms, 18 Alder Copse stands well clear of the street.
Price per m²
£4,329
Street avg £3,709
Floor Area
82 m²
Street avg 77 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
3.0 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