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Get started2 Allendale is a four-bedroom detached house in Southwater, Horsham, Horsham (RH13 9UE). It has a recorded floor area of 135 m² (around 1453 sq ft), construction records dating it to 1983-1990 and council tax band F. The latest certificate (January 2024) shows a C (score 72). The rating has held steady at C across 2 certificates since July 2009. Between certificates, lighting went from Good to Very Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 83).
Sale prices here have outpaced Horsham HPI: 5.6% per year against 0% for the wider region. Today's modelled estimate of £602,000 is 24.8% above the 2019 sale price. Last sale on file: £482,500 in July 2019. Across the public record there are 5 sales, relatively high churn for a single property.
2 Allendale has more than tripled in price since its earliest registered sale in 1998.
£602,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.6% per year over 21 years.
£482,500
Growth on file: 5.6% per year over 21 years.
On price per m², 2 Allendale runs well behind the street norm.
Price per m²
£3,574
Street avg £4,456
Floor Area
135 m²
Street avg 128 m²
Habitable Rooms
5 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
0.1 km
Southwater Street — bus stop.

Daytime· 07:00 – 23:00
46.5dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency decreased
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19 July 2019Most recent
£482,500
+23.1%over 8 years4 February 2011
£392,000
+32.9%over 6 years21 May 2004
£295,000
+22.2%over 2 years1 February 2002
£241,500
+53.8%over 3 years30 December 1998
£157,000
Median price across the last 5 sales in RH13 9UE: £495,000 (2023–2000).
CO₂ Emissions
3.6 t/year
Street avg 4.8 t/year
RH13 9UE
Closest school
0.6 km
Southwater Junior Academy. 4 schools nearby.
Night-time· 23:00 – 07:00
38.2dB
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