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Get started20 Grasslands is a four-bedroom detached house in Smallfield, Horley, Horley (RH6 9NU). It has a recorded floor area of 140 m² (around 1507 sq ft), construction records dating it to 1991-1995 and council tax band F. The latest certificate (May 2012) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since July 2009. Between certificates, lighting went from Poor to Average. The recommended improvements would lift it to B (score 84), a 2-band jump. The latest certificate is from May 2012, so improvements made since then won't be reflected.
Held since December 2009 — that's 16 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. Sale prices here have outpaced England HPI: 7.9% per year against 0% for the wider region. Today's modelled estimate of £579,000 is 44.8% above the 2009 sale price. On a £-per-square-foot basis, the last sale (£265/sq ft) was about 28.8% above the typical sold price in the postcode. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, a garage conversion and an annexe, meaningful when judging how the property has evolved. At 140 m² it's 27.3% larger than the typical home in the postcode (110 m² median across 23 EPCs).
Recommended upgrades on file would lift this property by multiple EPC bands.
This certificate is over 10 years old and is no longer valid.Expired 02 May 2022
Extension: Single storey · Side of property
Erection of single storey extensions to west elevation and conversion of garage to provide utility room & disabled persons annexe. formation of extended driveway to provide additional parking.
Sale price has at least doubled since 1995.
£579,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.9% per year over 14 years.
£400,000
Growth on file: 7.9% per year over 14 years.
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Floor Area for 20 Grasslands runs comfortably ahead of the street norm.
Price per m²
£2,857
Street avg £3,125
Floor Area
140 m²
Street avg 110 m²
Habitable Rooms
7 rooms
Crime
26/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Broadbridge Lane — bus stop.

Daytime· 07:00 – 23:00
59.6dB

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Extension: Single storey
Erection of first floor extension over existing garage, single storey side/rear extension & conversion of garage to habitable accommodation.
4 December 2009Most recent
£400,000
+190.9%over 13 years15 December 1995
£137,500
Median price across the last 5 sales in RH6 9NU: £450,000 (2025–2021).
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Every planning application and decision on record
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Energy costs, comparable sales, crime, schools and transport

Street avg 6 rooms
CO₂ Emissions
4.6 t/year
Street avg 4.6 t/year
RH6 9BS
Closest school
0.6 km
Burstow Primary School. 6 schools nearby.
Flood risk
Low
From the Environment Agency.
Night-time· 23:00 – 07:00
50.0dB