Lambourne House, Long Mill Lane, Platt, Sevenoaks, TN15 8NA
About Lambourne House
Lambourne House is a five-bedroom detached house in Platt, Sevenoaks, Sevenoaks (TN15 8NA). It has a recorded floor area of 306 m² (around 3294 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. Other recorded features include attached land beyond the plot.
At 306 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 £1,660,000 is 10.7% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£455/sq ft) was about 40.4% above the typical sold price in the postcode. Last sold in July 2016, so it's been off the market for around 10 years. 2 planning records sit against the property, 0 approved, 0 refused.
Know exactly what you're buying at Lambourne House
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
What this property has
Inside
- Bedrooms5
Outside
- Private gardenWest-facing
- GarageDouble
- LandYes
Building
- RefurbishedYes
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This certificate is over 10 years old and is no longer valid.Expired 12 Jun 2026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
Planning history at Lambourne House is exclusively tree-management applications — typical for a property with mature trees on or near the plot.
- Apr 2025Tree WorksTreesIn report
Birch tree (Red dot- T1) reduce crown by 25% as part of the trees maintainance, to obtain health and appearance. Maple trees x2 (Grey dots- T2) reduce crowns by 25%, as part of the trees maintainance, to obtain health and appearance. Crab Apple tree (Brown dot- T 3) reduce crown by 25% as part of the trees maintainance, to obtain health and appearance. Lamburnum ( Purple dot- T 4) reduce crown by 25% as part of the trees maintainance, to obtain health and appearance. Row of conifer on right side of rear garden (Turquoise dots- T5) reduce height by a 5 ft further than previous reduction height. Reduce extremities on rear side of trees, to allow more light to property. Goat Willow (Blue dot- T 6) re-pollard 10% further previous pruning points, as part of the trees maintainance, to obtain health and appearance
- Documents
- 2 docs on file
- Reference
- 25/00320/TNCA
- Apr 2025Tree WorksTreesIn report
Birch tree (Red dot- T1) reduce crown by 25% as part of the trees maintainance, to obtain health and appearance. Maple trees x2 (Grey dots- T2) reduce crowns by 25%, as part of the trees maintainance, to obtain health and appearance. Crab Apple tree (Brown dot- T 3) reduce crown by 25% as part of the trees maintainance, to obtain health and appearance. Lamburnum ( Purple dot- T 4) reduce crown by 25% as part of the trees maintainance, to obtain health and appearance. Row of conifer on right side of rear garden (Turquoise dots- T5) reduce height by a 5 ft further than previous reduction height. Reduce extremities on rear side of trees, to allow more light to property. Goat Willow (Blue dot- T 6) re-pollard 10% further previous pruning points, as part of the trees maintainance, to obtain health and appearance
- Documents
- 4 docs on file
- Reference
- 25/00320/PA
What's in Lambourne House, Long Mill Lane, Platt, Sevenoaks, TN15 8NA's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
Lambourne House valuation sits well clear of the typical sold price in this postcode.
£1,660,000
Modelled from EPC, postcode comparables.
£1,500,000
Recorded with HM Land Registry.
Sales timeline
10 July 2016Most recent
£1,500,000
Median price across the last 5 sales in TN15 8NA: £900,000 (2022–2017).
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
£815,000Wismer, Long Mill Lane, Platt, Sevenoaks, TN15 8NA
Sold Jan 2017
£1,420,000
Everything we know about Lambourne House, 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 Lambourne House runs comfortably ahead of the street norm.
Price per m²
£4,902
Street avg £4,124
Floor Area
306 m²
Street avg 186 m²
CO₂ Emissions
3.6 t/year
Street avg 5.8 t/year
Years Held
10 years
Street avg 12 years
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1 Eaglestone Close, 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