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12 Chapman Lane, Flackwell Heath, High Wycombe, HP10 9AZ

Extendable1 planning record

Estimated value

£860,000

  • Since the 2018 sale (£577,000)+49%
  • Against HP10 9AZ's recent median (£740,000)+16%

Newest record on this page: January 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Detached
Bedrooms
3
Bathroom
1
Floor area
212 m²
2282 sq ft
Energy rating
C
Score 74
Council tax
Band F
Tenure
Owner Occupied
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£860,000

  • Against its 2018 sale (£577,000)+49%
  • Against HP10 9AZ's recent median (£740,000)+16%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 12 Chapman Lane is modelled from its 212 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in HP10 9AZ. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    212 m² from the EPC lodged in March 2021

  • Sales of this home

    1 sale recorded, the latest in 2018

  • Recent sales in HP10 9AZ

    5 sales, median £740,000 (2025–2021)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: January 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 applicationFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

12 Chapman Lane valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 19 December 2018Most recent

    £577,000

Median price across the last 5 sales in HP10 9AZ: £740,000 (2025–2021).

Risks

What this page doesn't show

Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks Report.
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

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Overview

About 12 Chapman Lane

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

12 Chapman Lane is a three-bedroom detached house in Flackwell Heath, High Wycombe, High Wycombe (HP10 9AZ). It has a recorded floor area of 212 m² (around 2282 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (March 2021) shows a C (score 74). When first surveyed in September 2018 the rating was F, the property has climbed 3 bands since. Between certificates, window efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Good and main heating went from Average to Good. The recommended improvements would push it to B (score 82). Our model identifies extension potential, subject to local planning policy. The home occupies a corner plot.

At 212 m² the property is well over the postcode median (139 m² across 17 EPCs), placing it in the larger end of the local stock. One planning record on file: an extension approved in 2019. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £860,000 is 49% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£253/sq ft) was about 18.3% below the postcode norm. Most recent transfer: December 2018 at £577,000.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms3
  • Bathrooms1

Outside

  • Private gardenRear
  • Corner plotYes

Building

  • Extension potentialPossible
Before you decide

Everything you need to know about 12 Chapman Lane

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

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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.
Current Certificate(1 of 2)
Mar 2021

EPC Rating

A
B
C
C74
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
4.8 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 30 March 2031

4 years remaining

Property Improvements

Changes detected from historical EPC data

Mar 2021from Sept 2018
EPC improved fromF35toC74
Heating Controls
Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water
Main (No Stat)Main System

Hot water system upgraded

Windows
Partial DoubleFull Double

Windows upgraded, improving insulation

Low Energy Lighting
70%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 12 Chapman Lane, Flackwell Heath, High Wycombe, HP10 9AZ, sourced from the PlanIt planning register.

12 Chapman Lane has an approved side and rear extension on the planning record.

1 application on record at 12 Chapman Lane, Flackwell Heath, High Wycombe, HP10 9AZ

1decisions1extensions4documents3nearby
  1. Jan 2019
    ExtensionFull
    Outcome in report

    Extension: Side and rear of property

    Householder application for part two storey side and part single storey rear extension

    Documents
    4 docs on file
    Reference
    18/08151/FUL
    Full record in report

Unlock 12 Chapman Lane, Flackwell Heath, High Wycombe, HP10 9AZ's full planning history

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

  • Every decision — granted, refused or withdrawn (1 on record)
  • All 1 application on this property in full, plus 3 notable nearby
  • The 4 documents, officer reports & conditions
  • What the pattern means for extending or converting here
£14.99one-off · instant

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On the street

Versus other Chapman Lane homes

Four headline reads against 17 similar houses on this street, drawn from the latest EPC and Land Registry data.

12 Chapman Lane outperforms the street on habitable rooms by a wide margin.

Price per m²

£2,722

Street avg £4,380

Below

Floor Area

212 m²

Street avg 139 m²

Strongly above

Habitable Rooms

9 rooms

Street avg 6 rooms

Strongly above

CO₂ Emissions

4.8 t/year

Street avg 4.7 t/year

On par
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the High Wycombe district page.
Full High Wycombe report

Crime

59/mo

Falling year-on-year across the wider district.

Nearest stop

0.1 km

Highlands — bus stop.

Closest school

0.3 km

Juniper Hill School. 11 schools nearby.

Nearest schools

  • Juniper Hill SchoolPrimary314m
  • Carrington Junior SchoolPrimary708m
  • Carrington Infant SchoolPrimary708m
  • Loudwater Combined SchoolPrimary1.3km

Nearest stops

  • HighlandsBus stop101m
  • Chapman LaneBus stop124m
  • GreenlandsBus stop148m
  • Straight BitBus stop314m

Most reported crime locally

  • Violence & Sexual Offences355 reports36%
  • Anti-social Behaviour133 reports13%
  • Other Theft89 reports9%
  • Criminal Damage & Arson87 reports9%

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 HP10 9AZ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for HP10 9AZ

Daytime· 07:00 – 23:00

50.1dB

Low
Night-time road noise heatmap for HP10 9AZ

Night-time· 23:00 – 07:00

40.7dB

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

Get a survey for this property

Level 3 Building Survey

Mid 20th centuryDetached HouseEPC CExtended multiple times (2+ extensions)

Because the property has been extended more than once, we believe a Level 3 building survey should be considered.

From £1,360 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£844k

1 Cherrywood Gardens, Flackwell Heath

HP10 9AX

3 bed2 bath
£564k

1 Aspen Road

HP10 9FA

3 bed2 bath
£529k

1 Birfield Road, Loudwater

HP10 9TW

3 bed2 bath
£483k

1 Conway Close, Loudwater

HP10 9TR

3 bed1 bath
£934k

1 Cherry Rise, Flackwell Heath

HP10 9PS

4 bed2 bath
£765k

1 Chilterns Close, Flackwell Heath

HP10 9BB

4 bed2 bath
£748k

1 Bracken Way, Flackwell Heath

HP10 9JX

4 bed1 bath
£676k

1 Chiltern Green, Flackwell Heath

HP10 9AJ

4 bed2 bath

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 12 Chapman Lane is modelled from its 212 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in HP10 9AZ. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 1 sale is recorded for 12 Chapman Lane. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 12 Chapman Lane was lodged in March 2021 at band C and is valid until March 2031. 2 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. 1 application is matched to 12 Chapman Lane. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 17 months, which places each incident at an approximate point. The 11 schools and 30 stops listed are measured in a straight line from HP10 9AZ, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Council tax band
12 Chapman Lane is in council tax band F. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 12 Chapman Lane, Flackwell Heath, High Wycombe, HP10 9AZ. Each answer is also embedded as structured data for search engines.

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