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21 South Hills, Brill, Aylesbury, HP18 9TQ

3 planning records
Property type
Detached
Floor area
124 m²
1335 sq ft
Energy rating
C
Score 79
Council tax
Band G
Overview

About 21 South Hills

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

21 South Hills is a detached house in Brill, Aylesbury, Aylesbury (HP18 9TQ). It has a recorded floor area of 124 m² (around 1335 sq ft), construction records dating it to before 1900 and council tax band G. The latest certificate (November 2025) shows a C (score 79), near the top of the C band. When first surveyed in September 2010 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Very Good, roof efficiency went from Poor to Very Good and window efficiency went from Poor to Very Good. The recommended improvements would push it to B (score 88). Main heating runs on electricity: electricity, unspecified tariff. This certificate was lodged in the last six months, so the rating reflects current condition.

3 planning records sit against the property, 2 approved, 1 refused. Past consents include partial demolition and new windows, meaningful when judging how the property has evolved. At 124 m² it's 20.5% smaller than the typical home in the postcode (156 m² median across 11 EPCs). Its energy rating outperforms most of the postcode (better than 82% of similar EPCs). On a £-per-square-foot basis, the last sale (£1,349/sq ft) was about 336.1% above the typical sold price in the postcode. Last sale on file: £1,800,000 in April 2024.

Before you decide

Everything you need to know about 21 South Hills

The true value, the hidden risks and the full sale history, in one report.

Larger development activity nearbyA planning decision worth checking

Pick your report · every report is £14.99

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Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

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

21 South Hills's carbon output is low for the local stock.

Current Certificate(1 of 3)
Nov 2025

EPC Rating

A
B
C
C79
D
E
F
G
Main Heating
Heat Pump
Main Fuel
Electric
Hot Water
Average
Windows
Very Good
CO2 Emissions
0.5 t/year
Occupancy

Property Improvements

Changes detected from historical EPC data

May 2023from Sept 2010
EPC improved fromE47toD55
Hot Water
AveragePoor

Hot water efficiency decreased

Windows
PoorGood

Window efficiency improved

Walls
Very PoorGood

Wall insulation improved

Floor Insulation
UninsulatedInsulated

Floor insulation added or improved

Low Energy Lighting
0%71%

More low energy lighting installed

Nov 2025from May 2023
EPC improved fromD55toC79
Heating System
Gas BoilerHeat Pump

Heat pump installed, significantly improving energy efficiency

Main Fuel
OilElectric

Changed to a more efficient fuel source

Heating Controls
FullFull Control

Heating controls upgraded for better temperature management

Hot Water
PoorAverage

Hot water efficiency improved

Windows
Mostly DoubleHigh Performance

High performance glazing installed

Wall Insulation
Uninsulated StoneInsulated Cavity

Cavity wall insulation installed

Roof
PoorVery Good

Roof insulation improved

Low Energy Lighting
71%100%

More low energy lighting installed

SDL Surveying

Get a survey for this property

Level 3 Building Survey

Victorian-eraDetached HouseEPC CPre-1919 build

Because the property was built before 1919, we believe a Level 3 building survey should be considered.

From £1,795 · Includes VAT

Planning

Planning history

Applications and permits filed against 21 South Hills, Brill, Aylesbury, HP18 9TQ, sourced from the PlanIt planning register.

A recent planning application at 21 South Hills was refused — worth checking the council file.

3 applications on record at 21 South Hills, Brill, Aylesbury, HP18 9TQ

3decisions67documents2nearby
Flagged:Demolition
  1. Mar 2006
    RenovationFull
    Outcome in report

    Installation of new bay window

    New Windows
    Documents
    7 docs on file
    Reference
    06/00241/APP
    Full record in report
  2. More recent applications — locked
  3. AmendmentDecision
  4. DemolitionDecision

Unlock 21 South Hills, Brill, Aylesbury, HP18 9TQ's full planning history

You're seeing the shape of it. The report has the substance.

  • Every decision — granted, refused or withdrawn (3 on record)
  • All 3 applications on this property in full, plus 2 notable nearby
  • The 67 documents, officer reports & conditions
  • What the pattern means for extending or converting here
£14.99one-off · instant

One time fee only - money back guarantee

Price

Sales history & valuation

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

Latest sale on 21 South Hills was the highest on Land Registry record across the postcode.

Current estimate

£1,717,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2024)

£1,800,000

Recorded with HM Land Registry.

Sales timeline

  1. 9 April 2024Most recent

    £1,800,000

Median price across the last 5 sales in HP18 9TQ: £785,000 (2025–2018).

On the street

Versus other South Hills homes

Four headline reads against 11 similar houses on this street, drawn from the latest EPC and Land Registry data.

21 South Hills outperforms the street on price per m² by a wide margin.

Price per m²

£14,516

Street avg £3,552

Strongly above

Floor Area

124 m²

Street avg 157 m²

Strongly below

CO₂ Emissions

0.5 t/year

Street avg 7.7 t/year

Strongly above

Years Held

2 years

Street avg 10 years

Strongly below
Before you decide

Everything you need to know about 21 South Hills

The true value, the hidden risks and the full sale history, in one report.

Larger development activity nearbyA planning decision worth checking

Pick your report · every report is £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Area

The neighbourhood at a glance

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

Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.

Crime

2/mo

Steady year-on-year across the wider district.

Nearest stop

0.3 km

The Square — bus stop.

Closest school

0.6 km

Brill Church of England School. 2 schools nearby.

Go deeper on the local area

A Local Area 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 HP18 9TQ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for HP18 9TQ

Daytime· 07:00 – 23:00

45.0dB

Low
Night-time road noise heatmap for HP18 9TQ

Night-time· 23:00 – 07:00

36.2dB

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 21 South Hills, Brill, Aylesbury, HP18 9TQ. Each answer is also embedded as structured data for search engines.