Blackrock, Childsbridge Way, Seal, Sevenoaks, TN15 0DG
About Blackrock
Blackrock is a four-bedroom detached house in Seal, Sevenoaks, Sevenoaks (TN15 0DG). It has a recorded floor area of 234 m² (around 2519 sq ft), construction records dating it to 1991-1995 and council tax band G. The latest certificate (July 2024) shows a C (score 72). When first surveyed in February 2012 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Average to Good. Records show the property has been extended at some point in its history.
At 234 m² the property is well over the postcode median (133 m² across 17 EPCs), placing it in the larger end of the local stock. Across 2003–2012, sale prices on this property compounded at 3.1% per year. Today's modelled estimate of £938,000 sits 72.1% above the 2012 sale of £545,000. On a £-per-square-foot basis, the last sale (£216/sq ft) was about 21.6% below the postcode norm. 8 planning records sit against the property, 6 approved, 2 refused. Past consents include an extension and a garage conversion, meaningful when judging how the property has evolved. On the market in August 2012 and unlisted since — roughly 14 years.
Know exactly what you're buying at Blackrock
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms4
- Bathrooms3
Outside
- Private gardenYes
- ParkingOff road
Building
- Previously extendedYes
Energy performance
Blackrock's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Windows upgraded to triple glazing
More low energy lighting installed
Planning history
Blackrock has been extended on multiple sides of the property across separate planning applications.
- May 2018Garage ConversionFullIn report
Extension: Single storey · Side of property
Garage conversion into living accommodation. Erection of a first floor side extension with side dormers and a velux window. Roof lantern to the rear.
Extension- Documents
- 6 docs on file
- Reference
- 18/00994/HOUSE
- Aug 2014ConditionsIn report
Details pursuant to condition 4 (tree protection) of SE/14/00558/HOUSE
- Documents
- 2 docs on file
- Reference
- 14/02522/DETAIL
We flagged 1 thing worth checking at Blackrock
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Blackrock valuation sits well clear of the typical sold price in this postcode.
£938,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.1% per year over 9 years.
£545,000
Growth on file: 3.1% per year over 9 years.
Sales timeline
2 August 2012Most recent
£545,000
+31.3%over 8 years30 September 2003
£415,000
Median price across the last 5 sales in TN15 0DG: £526,500 (2024–2020).
Nearby sales in TN15 0DG
5 Childsbridge Way, Seal, Sevenoaks, TN15 0DG
Sold Sept 2024
£526,5001 Childsbridge Way, Seal, Sevenoaks, TN15 0DG
Sold Mar 2023
£832,50011 Childsbridge Way, Seal, Sevenoaks, TN15 0DG
Sold Jun 2021
£515,00010 Childsbridge Way, Seal, Sevenoaks, TN15 0DG
Sold Jan 2021
£505,000Oak Tree Lodge, Childsbridge Way, Seal, Sevenoaks, TN15 0DG
Sold Aug 2020
£740,000
Everything we know about Blackrock, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Childsbridge Way homes
Blackrock outperforms the street on floor area by a wide margin.
Price per m²
£2,329
Street avg £4,078
Floor Area
234 m²
Street avg 132 m²
Habitable Rooms
8 rooms
Street avg 6 rooms
CO₂ Emissions
7.1 t/year
Street avg 5.2 t/year
Similar properties nearby
1 Childsbridge Way, Seal
TN15 0DG
1 Crown Point Cottage, Sevenoaks Road, Seal Chart
TN15 0HB
1 Copse Bank, Seal
TN15 0DE
1 Church Road, Seal
TN15 0AU
1 Brook Cottages, Brook Lane, Plaxtol
TN15 0RF
1 Broadhoath, Stone Street, Seal
TN15 0LX
1 Forge View, Carters Hill, Underriver
TN15 0RY
1 Childsbridge Farm Place, Seal
TN15 0FR
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
0.2 km
Bentley's Meadow — bus stop.
Closest school
0.2 km
Seal Church of England Primary School. 7 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
49.1dB

Night-time· 23:00 – 07:00
42.3dB