La Casetta, Blackness Lane, Keston, BR2 6HL
About La Casetta
La Casetta is a detached house in Keston (BR2 6HL). It has a recorded floor area of 126 m² (around 1356 sq ft), construction records dating it to 1996-2002 and council tax band E. The latest certificate (April 2025) shows a C (score 74). When first surveyed in June 2010 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good, window efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to B (score 83).
9 planning records sit against the property, 2 approved, 4 refused. Past consents include an extension and a porch, meaningful when judging how the property has evolved. Across 2010–2017, sale prices on this property compounded at 8.3% per year. Today's modelled estimate of £771,000 is 10.9% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£512/sq ft) was about 89.8% above the typical sold price in the postcode. Last sold in December 2017, so it's been off the market for around 8 years. At 126 m² it's 20.3% smaller than the typical home in the postcode (158 m² median across 29 EPCs).
Know exactly what you're buying at La Casetta
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Single glazing replaced with double or better glazing
Cavity wall insulation installed
Floor insulation added or improved
More low energy lighting installed
Planning history
Multiple extension applications run across more than a decade of planning history at La Casetta.
- Dec 2021OutbuildingOutlineIn report
Outbuilding at the rear of the garden to provide a Gym and office. Lawful Development Certificate (Proposed)
- Agent
- Ideaplan
- Documents
- 7 docs on file
- Reference
- 21/05236/PLUD
- Jul 2021Garage ConversionOutlineIn report
Extension: Single storey · Rear of property
Single storey rear extension (for which prior approval has been granted under 21/01307/HHPA) conversion of garage to habitable room LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)
- Agent
- Robinson Escott Planning LLP
Extension- Documents
- 8 docs on file
- Reference
- 21/02163/PLUD
What's in La Casetta, Blackness Lane, Keston, BR2 6HL's planning history?
7 more on this property, plus refusals, disputes and full decisions nearby, in the report.
Sales history & valuation
La Casetta valuation sits well clear of the typical sold price in this postcode.
£771,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.3% per year over 7 years.
£695,000
Growth on file: 8.3% per year over 7 years.
Sales timeline
20 December 2017Most recent
£695,000
+78.2%over 7 years16 September 2010
£390,000
Median price across the last 5 sales in BR2 6HL: £806,500 (2025–2023).
Nearby sales in BR2 6HL
Kelty, Blackness Lane, Keston, BR2 6HL
Sold Mar 2025
£806,500Hansler, Blackness Lane, Keston, BR2 6HL
Sold Nov 2024
£885,0001 Orchard Place, Blackness Lane, Keston, BR2 6HL
Sold Aug 2024
£1,010,000Strathallan, Blackness Lane, Keston, BR2 6HL
Sold Aug 2024
£785,000Foxley, Blackness Lane, Keston, BR2 6HL
Sold Jan 2023
£795,000
Everything we know about La Casetta, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Blackness Lane homes
La Casetta outperforms the street on co₂ emissions by a wide margin.
Price per m²
£5,516
Street avg £4,299
Floor Area
126 m²
Street avg 166 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
3.3 t/year
Street avg 5.5 t/year
Similar properties nearby
1 Leaves Green House, Leaves Green Road
BR2 6DU
1 Keston End, Leaves Green Road
BR2 6DT
1 High House Cottages, Ashmore Lane
BR2 6DH
1 Heathfield Close
BR2 6BJ
1 Blackness Cottages, Blackness Lane
BR2 6HP
1 Holwood Cottages, Shire Lane
BR2 6AA
1 Lakes Road
BR2 6BN
1 Landau Terrace, 65 Croydon Road
BR2 6EH
The neighbourhood at a glance
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Blackness Lane — bus stop.
Closest school
1.7 km
Keston Church of England Primary School. 7 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
50.1dB

Night-time· 23:00 – 07:00
42.0dB