9 St Marys Close, Platt, Sevenoaks, TN15 8NH
About 9 St Marys Close
9 St Marys Close is a three-bedroom detached house in Platt, Sevenoaks, Sevenoaks (TN15 8NH). It has a recorded floor area of 98 m² (around 1055 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (February 2015) shows a C (score 70). The recommended improvements would push it to B (score 85). The latest certificate is from February 2015, so improvements made since then won't be reflected. The home occupies a cul-de-sac position.
At 98 m² it sits well below the postcode median (146 m² across 4 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Across 2008–2015, sale prices on this property compounded at 8.7% per year. Today's modelled estimate of £610,000 is 18.4% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£488/sq ft) was about 71.9% above the typical sold price in the postcode. Last changed hands 11 years ago, in September 2015.
Know exactly what you're buying at 9 St Marys Close
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
- Bedrooms3
- Bathrooms2
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenYes
- GarageYes
- Cul-de-sacYes
Building
- RefurbishedYes
Energy performance
9 St Marys Close's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 26 Feb 2025
EPC Rating
Planning history
9 St Marys Close has 2 separate extension applications on the council record.
- Sept 2011ExtensionAmendmentIn report
Extension: Side and rear of property
single storey side/rear extension
- Documents
- 4 docs on file
- Reference
- 11/02112/NMA
- Aug 2010ExtensionFullIn report
Extension: Side and rear of property
Single storey side/rear extension
- Documents
- 7 docs on file
- Reference
- 10/01451/FL
What's in 9 St Marys Close, Platt, Sevenoaks, TN15 8NH's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
9 St Marys Close valuation sits well clear of the typical sold price in this postcode.
£610,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.7% per year over 7 years.
£515,000
Growth on file: 8.7% per year over 7 years.
Sales timeline
1 September 2015Most recent
£515,000
+74.6%over 6 years18 December 2008
£295,000
Median price across the last 5 sales in TN15 8NH: £480,000 (2024–2009).
Nearby sales in TN15 8NH
11 St Marys Close, Platt, Sevenoaks, TN15 8NH
Sold Jul 2024
£672,0003 St Marys Close, Platt, Sevenoaks, TN15 8NH
Sold Sept 2023
£660,0006 St Marys Close, Platt, Sevenoaks, TN15 8NH
Sold Jul 2015
£480,0002 St Marys Close, Platt, Sevenoaks, TN15 8NH
Sold Oct 2009
£304,0005 St Marys Close, Platt, Sevenoaks, TN15 8NH
Sold Nov 2008
£370,000
Everything we know about 9 St Marys Close, 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 St Marys Close homes
9 St Marys Close outperforms the street on price per m² by a wide margin.
Price per m²
£5,255
Street avg £3,661
Floor Area
98 m²
Street avg 155 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
3.5 t/year
Street avg 5.5 t/year
Similar properties nearby
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1 Church Villas, Long Mill Lane, Platt
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1 Brickmakers Meadows, Platt
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1 Crouch Cottages, Long Mill Lane, Crouch, Borough Green
TN15 8QB
1 Bangays Way, Borough Green
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1 Eaglestone Close, Borough Green
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1 Black Barn Cottages, Crouch Lane, Borough Green
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1 Allingham 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
0.3 km
Platt Common — bus stop.
Closest school
0.3 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
47.6dB

Night-time· 23:00 – 07:00
40.1dB