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Threshing Barn, Pipers Hill, Great Gaddesden, Hemel Hempstead, HP1 3BY

4 planning records

Estimated value

£1,461,000

  • Since the 2011 sale (£985,000)+48%
  • Against HP1 3BY's recent median (£1,073,000)+36%

Newest record on this page: June 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Detached
Habitable rooms
7
From EPC
Floor area
231 m²
2486 sq ft
Energy rating
D
Score 65
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

£1,461,000

  • Against its 2011 sale (£985,000)+48%
  • Against HP1 3BY's recent median (£1,073,000)+36%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for Threshing Barn is modelled from its 231 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in HP1 3BY. 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

    231 m² from the EPC lodged in June 2026

  • Sales of this home

    2 sales recorded, the latest in 2011

  • Recent sales in HP1 3BY

    5 sales, median £1,073,000 (2025–2016)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: March 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 of 4 applicationsFull 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.

Threshing Barn valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 16 June 2011Most recent

    £985,000

    +23.9%over 8 years

  2. 2 July 2002

    £795,000

Median price across the last 5 sales in HP1 3BY: £1,073,000 (2025–2016).

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 Threshing Barn

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

Threshing Barn is a detached house in Great Gaddesden, Hemel Hempstead, Hemel Hempstead (HP1 3BY). It has a recorded floor area of 231 m² (around 2486 sq ft) and construction records dating it to 1983-1990. The latest certificate (June 2026) shows a D (score 65), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2009. Between certificates, lighting went from Very Poor to Very Good; while window efficiency dropped from Average to Poor and main heating dropped from Good to Average. The recommended improvements would push it to C (score 72). Main heating runs on oil. This certificate was lodged in the last six months, so the rating reflects current condition.

Held since June 2011 — that's 15 years off the open market, well above the local norm. At 231 m² the property is well over the postcode median (169 m² across 7 EPCs), placing it in the larger end of the local stock. 4 planning records sit against the property, 1 approved, 0 refused. Past consents include a garage conversion, meaningful when judging how the property has evolved. Across 2002–2011, sale prices on this property compounded at 2.4% per year. Today's modelled estimate of £1,461,000 is 48.3% above the 2011 sale price.

Before you decide

Everything you need to know about Threshing Barn

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.

Threshing Barn's carbon output runs well above what efficient homes in the postcode produce.

Current Certificate(1 of 2)
Jun 2026

EPC Rating

A
B
C
D
D65
E
F
G
Main Heating
Gas
Main Fuel
Oil
Hot Water
Good
Windows
Poor
CO2 Emissions
7.1 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 24 June 2036

9 years remaining

Property Improvements

Changes detected from historical EPC data

Jun 2026from Mar 2009
Low Energy Lighting
5%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against Threshing Barn, Pipers Hill, Great Gaddesden, Hemel Hempstead, HP1 3BY, sourced from the PlanIt planning register.

4 applications on record at Threshing Barn, Pipers Hill, Great Gaddesden, Hemel Hempstead, HP1 3BY

4decisions1extensions13documents1nearby
  1. Mar 2013
    Garage ConversionFull
    Outcome in report

    Conversion of existing double garage to garden room

    Documents
    6 docs on file
    Reference
    4/00135/13/FHA
    Full record in report
  2. More recent applications — locked
  3. Tree WorksDecision
  4. Tree WorksDecision

+ 1 more application in the report

Unlock Threshing Barn, Pipers Hill, Great Gaddesden, Hemel Hempstead, HP1 3BY's full planning history

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

  • Every decision — granted, refused or withdrawn (4 on record)
  • All 4 applications on this property in full, plus 1 notable nearby
  • The 13 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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On the street

Versus other Pipers Hill homes

Four headline reads against 7 similar houses on this street, drawn from the latest EPC and Land Registry data.

On epc rating, Threshing Barn stands well clear of the street.

Price per m²

£4,264

Street avg £4,130

Below

Floor Area

231 m²

Street avg 183 m²

Above

Habitable Rooms

7 rooms

Street avg 6 rooms

Above

CO₂ Emissions

7.1 t/year

Street avg 12.4 t/year

Strongly above
Area

The neighbourhood at a glance

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

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

Crime

245/mo

Falling year-on-year across the wider district.

Nearest stop

0.1 km

Church Meadow — bus stop.

Closest school

0.1 km

Great Gaddesden Church of England Primary School. 3 schools nearby.

Nearest schools

  • Great Gaddesden Church of England Primary SchoolPrimary76m
  • Potten End CofE Primary SchoolPrimary2.5km
  • Gaddesden Row JMI SchoolPrimary2.8km

Nearest stops

  • Church MeadowBus stop100m
  • Piper's HillBus stop364m
  • The Old ForgeBus stop883m
  • The Church of St LawrenceBus stop1.1km

Most reported crime locally

  • Violence & Sexual Offences1,150 reports34%
  • Anti-social Behaviour874 reports25%
  • Shoplifting270 reports8%
  • Criminal Damage & Arson244 reports7%

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 HP1 3BY from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for HP1 3BY

Daytime· 07:00 – 23:00

46.2dB

Low
Night-time road noise heatmap for HP1 3BY

Night-time· 23:00 – 07:00

38.0dB

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

Late 20th centuryDetached HouseEPC DNo mains gas

Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.

From £1,645 · 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.
£741k

1 Betjeman Way

HP1 3HH

4 bed
£584k

1 Bards Corner

HP1 3RR

3 bed2 bath
£550k

1 Church Farm Cottages, Pipers Hill, Great Gaddesden

HP1 3BY

£500k

1 Emerald View, Galley Hill

HP1 3LA

£484k

1 Church Meadow, Great Gaddesden

HP1 3BS

2 bed
£478k

1 Bodwell Close

HP1 3RG

4 bed2 bath
£445k

1 Gaddesden Terrace, Middleknights Hill

HP1 3NA

£424k

1 Chasden Road

HP1 3NL

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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 Threshing Barn is modelled from its 231 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in HP1 3BY. 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. 2 sales are recorded for Threshing Barn. 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 Threshing Barn was lodged in June 2026 at band D and is valid until June 2036. 2 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. 4 applications are matched to Threshing Barn. 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 14 months, which places each incident at an approximate point. The 3 schools and 19 stops listed are measured in a straight line from HP1 3BY, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about Threshing Barn, Pipers Hill, Great Gaddesden, Hemel Hempstead, HP1 3BY. Each answer is also embedded as structured data for search engines.

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