Dalesfield, Long Mill Lane, Platt, Sevenoaks, TN15 8LZ
About Dalesfield
Dalesfield is a detached house in Platt, Sevenoaks, Sevenoaks (TN15 8LZ). It has a recorded floor area of 206 m² (around 2217 sq ft), construction records dating it to 1930-1949 and council tax band G. The latest certificate (July 2025) shows a C (score 71). When first surveyed in March 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good and lighting went from Very Poor to Good.
At 206 m² the property is well over the postcode median (128 m² across 9 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 89% of similar EPCs). Last sold in January 2016, so it's been off the market for around 10 years. Across the public record there are 4 sales, relatively high churn for a single property. 3 planning records sit against the property, 1 approved, 2 refused. Past consents include an extension, meaningful when judging how the property has evolved. Across 1997–2016, sale prices on this property compounded at 7.2% per year. Today's modelled estimate of £960,000 is 20% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£361/sq ft) was about 19.7% above the typical sold price in the postcode.
Know exactly what you're buying at Dalesfield
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
Cavity wall insulation installed
Roof insulation improved
More low energy lighting installed
Planning history
- Jul 2010ExtensionFullIn report
Extension: Single storey
Single storey extensions and internal alterations
- Documents
- 11 docs on file
- Reference
- 10/01293/FL
- Apr 2005Garage ConversionFullIn report
Construction of detached double garage and conversion of integral garage to living space
- Documents
- 3 docs on file
- Reference
- 05/00499/FL
What's in Dalesfield, Long Mill Lane, Platt, Sevenoaks, TN15 8LZ's planning history?
1 more on this property, plus refusals, disputes and full decisions nearby, in the report.
Sales history & valuation
Dalesfield has more than tripled in price since its earliest registered sale in 1997.
£960,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.2% per year over 19 years.
£800,000
Growth on file: 7.2% per year over 19 years.
Sales timeline
25 January 2016Most recent
£800,000
+33.3%over 6 years13 November 2009
£600,000
+20.0%over 5 years3 June 2004
£499,999
+127.3%over 7 years29 May 1997
£220,000
Median price across the last 5 sales in TN15 8LZ: £430,000 (2024–2015).
Nearby sales in TN15 8LZ
Mill House, Long Mill Lane, Platt, Sevenoaks, TN15 8LZ
Sold Dec 2024
£1,210,000Kelvin, Long Mill Lane, Platt, Sevenoaks, TN15 8LZ
Sold Sept 2024
£430,0002 Church Villas, Long Mill Lane, Platt, Sevenoaks, TN15 8LZ
Sold Mar 2019
£367,500Romney House, Long Mill Lane, Platt, Sevenoaks, TN15 8LZ
Sold Aug 2018
£650,0003 Church Villas, Long Mill Lane, Platt, Sevenoaks, TN15 8LZ
Sold Oct 2015
£336,500
Everything we know about Dalesfield, 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 Long Mill Lane homes
Dalesfield outperforms the street on epc rating by a wide margin.
Price per m²
£3,883
Street avg £4,022
Floor Area
206 m²
Street avg 135 m²
Habitable Rooms
8 rooms
Street avg 6 rooms
CO₂ Emissions
5.8 t/year
Street avg 7.1 t/year
Similar properties nearby
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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
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Flour Mill — bus stop.
Closest school
0.4 km
Platt Church of England Voluntary Aided Primary School. 4 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
47.2dB

Night-time· 23:00 – 07:00
39.5dB