Barnfield House, Romney Street, Knatts Valley, Sevenoaks, TN15 6XR
About Barnfield House
Barnfield House is a five-bedroom detached house in Knatts Valley, Sevenoaks, Sevenoaks (TN15 6XR). It has a recorded floor area of 231 m² (around 2486 sq ft) and construction records dating it to before 1900. The latest certificate (March 2021) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 84), a 2-band jump. Main heating runs on oil.
At 231 m² the property is well over the postcode median (93 m² across 3 EPCs), placing it in the larger end of the local stock. 4 planning records sit against the property, 3 approved, 1 refused. Past consents include an extension and a porch, meaningful when judging how the property has evolved. Today's modelled estimate of £1,306,000 is 14.6% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£458/sq ft) was about 41.7% above the typical sold price in the postcode. Last sale on file: £1,140,000 in June 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at Barnfield 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
Energy performance
Barnfield House's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
- Jun 2021FullIn report
Change of use of land from former pub garden land to residential garden land, installation of an outbuilding for use as an ancillary home office, and associated decking area.
- Documents
- 7 docs on file
- Reference
- 21/01139/FUL
- Apr 2021OutbuildingAmendmentIn report
A garden summer room with timber decking has been built at the end of the garden.
- Documents
- 13 docs on file
- Reference
- 21/00331/LDCEX
What's in Barnfield House, Romney Street, Knatts Valley, Sevenoaks, TN15 6XR's planning history?
2 more on this property, plus refusals, disputes and full decisions nearby, in the report.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£1,306,000
Modelled from EPC, postcode comparables.
£1,140,000
Recorded with HM Land Registry.
Sales timeline
3 June 2021Most recent
£1,140,000
Median price across the last 5 sales in TN15 6XR: £615,000 (2025–2021).
Nearby sales in TN15 6XR
Oakdene, Romney Street, Knatts Valley, Sevenoaks, TN15 6XR
Sold Aug 2025
£1,115,000Macandy, Romney Street, Knatts Valley, Sevenoaks, TN15 6XR
Sold Aug 2024
£165,0001 Courtfield Cottage, Romney Street, Knatts Valley, Sevenoaks, TN15 6XR
Sold Oct 2021
£615,000Poldhu, Romney Street, Knatts Valley, Sevenoaks, TN15 6XR
Sold Jan 2021
£430,000Corner House, Romney Street, Knatts Valley, Sevenoaks, TN15 6XR
Sold Jan 2015
£350,000
Everything we know about Barnfield 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 Romney Street homes
On epc rating, Barnfield House stands well clear of the street.
Price per m²
£4,935
Street avg £4,275
Floor Area
231 m²
Street avg 91 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
9.1 t/year
Street avg 8.7 t/year
Similar properties nearby
1 Chart View, Kemsing
TN15 6PP
1 Bayldon House, School Lane, West Kingsdown
TN15 6JN
1 Barnfield Crescent, Kemsing
TN15 6SE
1 Barclay Field, Kemsing
TN15 6SN
1 Ash Tree Close, West Kingsdown
TN15 6JA
1 Birchway, West Kingsdown
TN15 6JZ
1 Beacon Row, London Road, West Kingsdown
TN15 6HT
1 Childsbridge Lane, Kemsing
TN15 6TH
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
1.0 km
East Hill Farm Park — bus stop.
Closest school
2.6 km
Kemsing Primary School. 1 school 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
42.5dB

Night-time· 23:00 – 07:00
35.7dB