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14a, High Street, Seal, Sevenoaks, TN15 0AJ

3 sales on record13 planning records
Property type
Semi-detached
Habitable rooms
4
From EPC
Floor area
117 m²
1259 sq ft
Energy rating
D
Score 56
Tenure
Owner Occupied
Overview

About 14a

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

14a is a semi-detached house in Seal, Sevenoaks, Sevenoaks (TN15 0AJ). It has a recorded floor area of 117 m² (around 1259 sq ft) and construction records dating it to before 1900. The latest certificate (March 2021) shows a D (score 56), a step below the typical UK home. When first surveyed in September 2011 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Poor to Good and hot-water efficiency went from Average to Good. The recommended improvements would lift it to B (score 86), a 2-band jump.

13 planning records sit against the property, 11 approved, 2 refused. Past consents include change of use to residential, meaningful when judging how the property has evolved. Across 2002–2020, sale prices on this property compounded at 3.7% per year. Today's modelled estimate of £479,000 is 49.7% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£254/sq ft) was about 22.7% below the postcode norm. Last sale on file: £320,000 in February 2020.

Before you offer

Know exactly what you're buying at 14a

Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.

Already flagged here

Larger development activity nearby
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Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

14a's carbon output runs well above what efficient homes in the postcode produce.

Current Certificate(1 of 3)
Mar 2021

EPC Rating

A
B
C
D
D56
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Poor
CO2 Emissions
6.6 t/year
Occupancy
Owner Occupied

Property Improvements

Changes detected from historical EPC data

Aug 2019from Sept 2011
EPC improved fromF35toD56
Heating System
Gas BoilerRoom Heaters

Heating system changed

Main Fuel
GasElectric

Changed to a more efficient fuel source

Hot Water
Main SystemImmersion

Hot water system changed

Windows
SingleSecondary

Single glazing replaced with double or better glazing

Wall Insulation
Uninsulated SolidPartial Insulation

Wall insulation upgraded

Roof
PoorGood

Roof insulation improved

Floor Insulation
UninsulatedInsulated

Floor insulation added or improved

Mar 2021from Aug 2019
Heating System
Room HeatersGas Boiler

Upgraded to gas central heating

Main Fuel
ElectricGas

Connected to mains gas supply

Hot Water
ImmersionMain System

Hot water system upgraded

Roof Insulation
PartialInsulated

Roof insulation improved

Planning

Planning history

Applications and permits filed against 14a, High Street, Seal, Sevenoaks, TN15 0AJ, sourced from the PlanIt planning register.

14a has been through 11 approved planning applications — a well-evolved property.

  1. Jan 2018
    Change of UseHeritage
    In report

    Change of use from office use to residential use. Internal and external alterations to enable conversion to be implemented.

    Documents
    8 docs on file
    Reference
    17/03437/LBCALT
    View planning record
  2. Jan 2018
    Change of UseFull
    In report

    Change of use from office use to residential use. Internal and external alterations to enable conversion to be implemented.

    Documents
    19 docs on file
    Reference
    17/03436/FUL
    View planning record
Before you offer

We flagged 1 thing worth checking at 14a

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
£14.99

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Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

The latest sale landed in the post-pandemic price surge — useful context when reading the figure.

Current estimate

£479,000

Modelled from EPC, postcode comparables and a sale-price growth of 3.7% per year over 17 years.

See how we calculated this
Last sold (2020)

£320,000

Growth on file: 3.7% per year over 17 years.

Sales timeline

  1. 11 February 2020Most recent

    £320,000

    +30.6%over 10 years
  2. 18 December 2009

    £245,000

    +44.1%over 7 years
  3. 10 October 2002

    £170,000

Median price across the last 5 sales in TN15 0AJ: £560,000 (2025–2021).

Before you offer

Everything we know about 14a, 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
£14.99
Trusted by UK homebuyers
Preview of the full property report
On the street

Versus other High Street homes

Four headline reads against 10 similar houses on this street, drawn from the latest EPC and Land Registry data.

Price per m² for 14a lags the street by a wide margin.

Price per m²

£2,735

Street avg £4,734

Strongly below

Floor Area

117 m²

Street avg 131 m²

On par

Habitable Rooms

4 rooms

Street avg 6 rooms

Strongly below

CO₂ Emissions

6.6 t/year

Street avg 4.9 t/year

Below
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Sevenoaks district page.

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

0.0 km

The Crown — bus stop.

Closest school

0.5 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.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around TN15 0AJ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for TN15 0AJ

Daytime· 07:00 – 23:00

48.0dB

Low
Night-time road noise heatmap for TN15 0AJ

Night-time· 23:00 – 07:00

40.6dB

Low
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 14a, High Street, Seal, Sevenoaks, TN15 0AJ. Each answer is also embedded as structured data for search engines.