Wismer, Long Mill Lane, Platt, Sevenoaks, TN15 8NA
About Wismer
Wismer is a detached house in Platt, Sevenoaks, Sevenoaks (TN15 8NA). It has a recorded floor area of 271 m² (around 2917 sq ft). The latest certificate (June 2016) returns a high B (score 86), putting the home a stone's throw from an A rating. The latest certificate is from June 2016, so improvements made since then won't be reflected.
At 271 m² the property is well over the postcode median (183 m² across 11 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 82% of similar EPCs). Today's modelled estimate of £1,562,000 is 10% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£487/sq ft) was about 50.1% above the typical sold price in the postcode. Last changed hands 9 years ago, in January 2017.
Know exactly what you're buying at Wismer
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
Achieving this rating across a home of this size is uncommon — larger homes typically score lower.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 12 Jun 2026
EPC Rating
Planning history
Wismer has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
Wismer valuation sits well clear of the typical sold price in this postcode.
£1,562,000
Modelled from EPC, postcode comparables.
£1,420,000
Recorded with HM Land Registry.
Sales timeline
11 January 2017Most recent
£1,420,000
Median price across the last 5 sales in TN15 8NA: £900,000 (2022–2016).
Nearby sales in TN15 8NA
Dales, Long Mill Lane, Platt, Sevenoaks, TN15 8NA
Sold Sept 2022
£1,320,0001 Maddox Cottages, Long Mill Lane, Platt, Sevenoaks, TN15 8NA
Sold Oct 2021
£470,000Little Platt, Long Mill Lane, Platt, Sevenoaks, TN15 8NA
Sold Aug 2017
£900,000Maddox House, Long Mill Lane, Platt, Sevenoaks, TN15 8NA
Sold May 2017
£815,000Lambourne House, Long Mill Lane, Platt, Sevenoaks, TN15 8NA
Sold Jul 2016
£1,500,000
Everything we know about Wismer, 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
EPC Rating for Wismer runs comfortably ahead of the street norm.
Price per m²
£5,240
Street avg £4,082
Floor Area
271 m²
Street avg 189 m²
CO₂ Emissions
3.2 t/year
Street avg 5.8 t/year
Years Held
9 years
Street avg 13 years
Similar properties nearby
1 Basted Mill, Basted Lane, Borough Green
TN15 8LP
1 Apple Barn Court, Long Mill Lane, Crouch, Borough Green
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1 Crouch Cottages, Long Mill Lane, Crouch, Borough Green
TN15 8QB
1 Black Barn Cottages, Crouch Lane, Borough Green
TN15 8LX
1 Bangays Way, Borough Green
TN15 8FS
1 Eaglestone Close, Borough Green
TN15 8EL
1 Claygate Cross Cottages, Winfield Lane, Borough Green
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1 Crouch Lane, Borough Green
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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
0.6 km
Flour Mill — bus stop.
Closest school
0.7 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
45.7dB

Night-time· 23:00 – 07:00
37.5dB