Idlehurst, Birch Grove, Horsted Keynes, Haywards Heath, RH17 7BT
About Idlehurst
Idlehurst is a detached house in Horsted Keynes, Haywards Heath, Haywards Heath (RH17 7BT). It has a recorded floor area of 292 m² (around 3143 sq ft), construction records dating it to 1930-1949 and council tax band G. The latest certificate (May 2023) shows an F (score 37), near the bottom of the EPC scale. Earlier certificates rated it E (March 2010); the latest reading is one band lower. Between certificates, window efficiency went from Very Poor to Poor and lighting went from Average to Very Good; while wall efficiency dropped from Good to Very Poor and roof efficiency dropped from Very Good to Good. The recommended improvements would lift it to C (score 74), a 3-band jump. Main heating runs on oil.
Held since July 2010 — that's 16 years off the open market, well above the local norm. At 292 m² the property is well over the postcode median (123 m² across 9 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £2,175,000 is 35.9% above the 2010 sale price. On a £-per-square-foot basis, the last sale (£509/sq ft) was about 16.7% above the typical sold price in the postcode. 6 planning records sit against the property, 0 approved, 0 refused.
Know exactly what you're buying at Idlehurst
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
Idlehurst's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency decreased
Single glazing replaced with double or better glazing
More low energy lighting installed
Planning history
- Jan 2026ConditionsIn report
Variation of condition no 2 relating to planning application DM/25/1294 - To allow for the window to the ground floor WC to be enlarged further from what was previously approved.
- Documents
- 12 docs on file
- Reference
- DM/25/3141
- Jul 2025ConservatoryFullIn report
Construction of a single-storey side conservatory extension, a side kitchen extension, alterations to doors and fenestration, erection of a greenhouse, associated hard and soft landscaping and replacement driveway gates
Extension- Documents
- 47 docs on file
- Reference
- DM/25/1294
We flagged 1 thing worth checking at Idlehurst
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
Idlehurst valuation sits well clear of the typical sold price in this postcode.
£2,175,000
Modelled from EPC, postcode comparables.
£1,600,000
Recorded with HM Land Registry.
Sales timeline
15 July 2010Most recent
£1,600,000
Median price across the last 5 sales in RH17 7BT: £460,000 (2021–2019).
Nearby sales in RH17 7BT
Jasmine Cottage, Birch Grove, Horsted Keynes, Haywards Heath, RH17 7BT
Sold Jun 2021
£460,000Stonecote, Birch Grove, Horsted Keynes, Haywards Heath, RH17 7BT
Sold May 2021
£575,000Newnhams Rough, Birch Grove, Horsted Keynes, Haywards Heath, RH17 7BT
Sold Oct 2020
£15,000Elm Cottage, Birch Grove, Horsted Keynes, Haywards Heath, RH17 7BT
Sold Jul 2020
£987,0002 Hamewith Cottages, Birch Grove, Horsted Keynes, Haywards Heath, RH17 7BT
Sold Nov 2019
£410,000
Everything we know about Idlehurst, 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 Birch Grove homes
Idlehurst outperforms the street on years held by a wide margin.
Price per m²
£5,479
Street avg £4,761
Floor Area
292 m²
Street avg 223 m²
Habitable Rooms
9 rooms
Street avg 7 rooms
CO₂ Emissions
15.0 t/year
Street avg 11.0 t/year
Similar properties nearby
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RH17 7EJ
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RH17 7EQ
1 Corner Cottages, Tanyard Lane, Chelwood Gate
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1 Cheffins Walk
RH17 7EP
1 Ashgrove Cottages, The Green, Horsted Keynes
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1 Danehurst Cottages, Church Lane, Danehill
RH17 7EY
1 Blacksmiths Cottages, Station Road, Horsted Keynes
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1 Cheeleys, Horsted Keynes
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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
1.4 km
The Red Lion — bus stop.
Closest school
2.1 km
Danehill Church of England Primary School. 2 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
43.6dB
Night-time· 23:00 – 07:00
36.2dB