1 Mill Cottages, Maidstone Road, Platt, Sevenoaks, TN15 8JE
About 1 Mill Cottages
1 Mill Cottages is a semi-detached house in Platt, Sevenoaks, Sevenoaks (TN15 8JE). It has a recorded floor area of 94 m² (around 1012 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (August 2015) shows a C (score 77), near the top of the C band. When first surveyed in April 2013 the rating was F, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Average to Very Good and window efficiency went from Average to Very Good. The recommended improvements would push it to B (score 88). The latest certificate is from August 2015, so improvements made since then won't be reflected.
At 94 m² it sits well below the postcode median (148 m² across 7 EPCs), making it one of the more compact homes locally. Across 2013–2020, sale prices on this property compounded at 10.7% per year. Today's modelled estimate of £407,000 is 13.1% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£356/sq ft) was about 41.1% above the typical sold price in the postcode. 3 planning records sit against the property, 2 approved, 1 refused. Last sale on file: £360,000 in February 2020.
Know exactly what you're buying at 1 Mill Cottages
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 Expired
This certificate is over 10 years old and is no longer valid.Expired 02 Aug 2025
EPC Rating
Property Improvements
Changes detected from historical EPC data
Upgraded to gas central heating
Connected to mains gas supply
Hot water system upgraded
High performance glazing installed
Wall insulation improved
Loft insulation upgraded to recommended levels
Floor insulation added or improved
Planning history
- Jul 2015FullIn report
Variation of condition 2 (Plan List) of planning permission TM/13/03598/FL to alter window and door locations, remove front door canopies and replaced with a curved lintel to match the neighbouring property and a sleeper wall is to be used in the garden to retain levels
- Documents
- 10 docs on file
- Reference
- 15/01119/FL
- Feb 2015OutlineIn report
Details of materials, landscaping and a construction phasing plan pursuant to conditions 3, 4 and 9 of planning permission TM/13/03598/FL (The proposed development consists of demolishing the existing garage and lean-to WC/store, extending the existing dwelling into a 3 bed house, splitting the site and building a new 3 bed house similar in character and scale. The two properties have their own private garden and parking space)
- Documents
- 24 docs on file
- Reference
- 14/04002/RD
What's in 1 Mill Cottages, Maidstone Road, Platt, Sevenoaks, TN15 8JE's planning history?
1 more on this property, plus refusals, disputes and full decisions nearby, in the report.
Sales history & valuation
1 Mill Cottages saw 3 transfers in just over a decade — high turnover for the postcode.
£407,000
Modelled from EPC, postcode comparables and a sale-price growth of 10.7% per year over 6 years.
£360,000
Growth on file: 10.7% per year over 6 years.
Sales timeline
10 February 2020Most recent
£360,000
+14.3%over 4 years27 November 2015
£315,000
+65.8%over 2 years31 October 2013
£189,950
Median price across the last 5 sales in TN15 8JE: £620,000 (2023–2015).
Nearby sales in TN15 8JE
Crickets, Maidstone Road, Platt, Sevenoaks, TN15 8JE
Sold Feb 2023
£620,000Cloggats, Maidstone Road, Platt, Sevenoaks, TN15 8JE
Sold Jan 2023
£1,200,000Platt Mill Cottage, Maidstone Road, Platt, Sevenoaks, TN15 8JE
Sold Aug 2022
£650,000Magnum Cottage, Maidstone Road, Platt, Sevenoaks, TN15 8JE
Sold Nov 2015
£345,000Middle Willow, Maidstone Road, Platt, Sevenoaks, TN15 8JE
Sold Apr 2006
£600,000
Everything we know about 1 Mill Cottages, 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 Maidstone Road homes
Floor Area for 1 Mill Cottages lags the street by a wide margin.
Price per m²
£3,830
Street avg £4,186
Floor Area
94 m²
Street avg 167 m²
CO₂ Emissions
2.5 t/year
Street avg 5.9 t/year
Years Held
6 years
Street avg 8 years
Similar properties nearby
1 Annetts Hall, Borough Green
TN15 8DY
1 Black Horse Mews, Borough Green
TN15 8SP
1 Ascot Close, Borough Green
TN15 8HL
1 Cloke Mews, Western Road, Borough Green
TN15 8AJ
1 Firtree Cottages, Maidstone Road, Platt
TN15 8JH
1 Fairview Cottages, Crouch Lane, Borough Green
TN15 8QL
1 Brickmakers Meadows, Platt
TN15 8NQ
1 Crow Hill Road, Borough Green
TN15 8HH
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Flour Mill — bus stop.
Closest school
0.5 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
47.8dB

Night-time· 23:00 – 07:00
40.7dB