20 Prewetts Mill Apartments, Mill Bay Lane, Horsham, RH12 1ST
About 20 Prewetts Mill Apartments
20 Prewetts Mill Apartments is a mid-terrace house in Horsham (RH12 1ST). It has a recorded floor area of 53 m² (around 570 sq ft). At 53 m² this is the 29th smallest of 59 units on EPC record in the building, where floor areas span 30–90 m². The building's EPC ratings span E to C across 59 units on file. The latest certificate (November 2017) shows a D (score 67), on the cusp of jumping into the C band. Main heating runs on electricity: electricity, unspecified tariff.
Today's modelled estimate of £263,000 is 15.2% below the 2018 sale of £310,000, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£543/sq ft) was about 15% above the typical sold price in the postcode. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). Last sale on file: £310,000 in December 2018.
Energy performance
EPC Rating
Certificate validity
Valid until 14 November 2027
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Planning history
20 Prewetts Mill Apartments has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
£263,000
Modelled from EPC, postcode comparables.
£310,000
Recorded with HM Land Registry.
Sales timeline
13 December 2018Most recent
£310,000
Median price across the last 5 sales in RH12 1ST: £215,000 (2026–2025).
Nearby sales in RH12 1ST
10 Prewetts Mill Apartments, Mill Bay Lane, Horsham, RH12 1ST
Sold Mar 2026
£220,0003 Prewetts Mill Apartments, Mill Bay Lane, Horsham, RH12 1ST
Sold Feb 2026
£212,0005 Prewetts Mill Apartments, Mill Bay Lane, Horsham, RH12 1ST
Sold Nov 2025
£210,0008 Prewetts Mill Apartments, Mill Bay Lane, Horsham, RH12 1ST
Sold Oct 2025
£215,00053 Prewetts Mill Apartments, Mill Bay Lane, Horsham, RH12 1ST
Sold Jun 2025
£285,000
Versus other Mill Bay Lane homes
20 Prewetts Mill Apartments outperforms the street on years held by a wide margin.
Price per m²
£5,849
Street avg £5,122
Floor Area
53 m²
Street avg 53 m²
CO₂ Emissions
1.8 t/year
Street avg 1.9 t/year
Years Held
8 years
Street avg 6 years
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19 Prewetts Mill Apartments, Mill Bay Lane
RH12 1ST
17 Prewetts Mill Apartments, Mill Bay Lane
RH12 1ST
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
276/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Cricketfield Road — bus stop.
Closest school
0.4 km
St Mary's CofE (Aided) Primary School. 15 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
49.7dB

Night-time· 23:00 – 07:00
40.8dB







