Olde Denne, Byfleets Lane, Warnham, Horsham, RH12 3PD
About Olde Denne
Olde Denne is a five-bedroom detached house in Warnham, Horsham, Horsham (RH12 3PD). It has a recorded floor area of 257 m² (around 2766 sq ft), construction records dating it to before 1900 and council tax band H. The latest certificate (April 2012) shows an E (score 49), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 82), a 3-band jump. Main heating runs on oil. The latest certificate is from April 2012, so improvements made since then won't be reflected.
10 planning records sit against the property, 10 approved, 0 refused. Past consents include partial demolition, an extension and a porch, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. At 257 m² it's 28% larger than the typical home in the postcode (201 m² median across 8 EPCs). 5 bedrooms is on the larger side for this postcode, where 4 is the typical count. Across 1995–2014, sale prices on this property compounded at 7.1% per year. Today's modelled estimate of £1,957,000 is 30.5% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£542/sq ft) was about 43.7% above the typical sold price in the postcode. 12 years since the last transfer (November 2014).
Know exactly what you're buying at Olde Denne
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
- Bedrooms5
Energy performance
Olde Denne's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 18 Apr 2022
EPC Rating
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Mar 2026ConditionsIn report
Application for Approval of Details Reserved by Condition 3 to approved application DC/25/1812.
- Agent
- Manorwood
- Documents
- 6 docs on file
- Reference
- DISC/26/0038
- Jan 2026DemolitionFullIn report
Demolition of existing garage, carport and stable outbuildings. Partial change of use of land to residential curtilage to allow for the re-positioning of replacement detached garage building. Construction of entrance gates, fencing and hardstanding.
- Agent
- Manorwood
- Documents
- 22 docs on file
- Reference
- DC/25/1812
We flagged 1 thing worth checking at Olde Denne
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
Latest sale on Olde Denne was the highest on Land Registry record across the postcode.
£1,957,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.1% per year over 19 years.
£1,500,000
Growth on file: 7.1% per year over 19 years.
Sales timeline
7 November 2014Most recent
£1,500,000
+275.0%over 19 years20 July 1995
£400,000
Median price across the last 5 sales in RH12 3PD: £540,000 (2020–2004).
Nearby sales in RH12 3PD
Everything we know about Olde Denne, 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 Byfleets Lane homes
Olde Denne outperforms the street on habitable rooms by a wide margin.
EPC Rating
49 (E)
Street avg 49 (E)
Floor Area
257 m²
Street avg 268 m²
CO₂ Emissions
14.0 t/year
Street avg 10.4 t/year
Habitable Rooms
10 rooms
Street avg 7 rooms
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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
0.5 km
Bailing Hill Cottages — bus stop.
Closest school
1.1 km
Warnham CofE Primary School. 8 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
44.1dB

Night-time· 23:00 – 07:00
36.1dB