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21 Castle Avenue, Datchet, Slough, SL3 9BA

4 planning records

Estimated value

£1,119,000

  • Since the 2022 sale (£1,085,000)+3%
  • Against SL3 9BA's recent median (£625,000)+79%

Newest record on this page: December 2024. 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
4
Bathrooms
4
Floor area
204 m²
2196 sq ft
Energy rating
C
Score 79
Council tax
Band E
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

£1,119,000

  • Against its 2022 sale (£1,085,000)+3%
  • Against SL3 9BA's recent median (£625,000)+79%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 21 Castle Avenue is modelled from its 204 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SL3 9BA. 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

    204 m² from the EPC lodged in April 2022

  • Sales of this home

    2 sales recorded, the latest in 2022

  • Recent sales in SL3 9BA

    5 sales, median £625,000 (2024–2020)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: December 2024Latest 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.

Latest sale on 21 Castle Avenue was the highest on Land Registry record across the postcode.

Sales timeline

  1. 22 May 2022Most recent

    £1,085,000

    +126.0%over 4 years

  2. 8 November 2017

    £480,000

Median price across the last 5 sales in SL3 9BA: £625,000 (2024–2020).

Risks

What this page doesn't show

1 potential issue has already been flagged for 21 Castle Avenue, Datchet, Slough, SL3 9BA. The detail, evidence and what to ask about it are in the Risks Report.
  • Environmental risk flaggedIn report
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

One time fee only - money back guarantee

Overview

About 21 Castle Avenue

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

21 Castle Avenue is a four-bedroom detached house in Datchet, Slough, Slough (SL3 9BA). It has a recorded floor area of 204 m² (around 2196 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (April 2022) shows a C (score 79), near the top of the C band. When first surveyed in August 2017 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Very Good, window efficiency went from Average to Good and lighting went from Poor to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to B (score 85). The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal.

At 204 m² the property is well over the postcode median (119 m² across 10 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. 4 planning records sit against the property, 4 approved, 0 refused. Past consents include an extension, a porch and partial demolition, meaningful when judging how the property has evolved. Across 2017–2022, sale prices on this property compounded at 19.7% per year. On a £-per-square-foot basis, the last sale (£494/sq ft) was about 47% above the typical sold price in the postcode. Last sale on file: £1,085,000 in May 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

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

  • Bedrooms4
  • Bathrooms4
  • Dining roomYes
  • Utility roomYes

Outside

  • Private gardenYes
  • GarageDouble

Building

  • Underfloor heatingYes
  • RefurbishedYes
Before you decide

Everything you need to know about 21 Castle Avenue

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

Environmental risk flagged

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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 Castle Avenue ranks among the most efficient homes in the postcode for energy use.

Current Certificate(1 of 2)
Apr 2022

EPC Rating

A
B
C
C79
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
4.1 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 19 April 2032

5 years remaining

Property Improvements

Changes detected from historical EPC data

Apr 2022from Aug 2017
EPC improved fromD57toC79
Heating Controls
Prog + StatFull Control

Heating controls upgraded for better temperature management

Windows
Full DoubleTriple

Windows upgraded to triple glazing

Roof
Very PoorVery Good

Roof insulation improved

Low Energy Lighting
10%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 21 Castle Avenue, Datchet, Slough, SL3 9BA, sourced from the PlanIt planning register.

Planning history includes recorded demolition works, indicating a major rebuild phase at this address.

4 applications on record at 21 Castle Avenue, Datchet, Slough, SL3 9BA

4decisions3extensions45documents
Flagged:Demolition
  1. Apr 2018
    DemolitionFull
    Outcome in report

    Extension: Two storey · Rear of property

    Construction of a two storey rear extension and raising of the roof including x3 front dormers, following demolition of the single storey rear extension

    Extension
    Documents
    16 docs on file
    Reference
    18/00265/FULL
    Full record in report
  2. More recent applications — locked
  3. PorchDecision
  4. ExtensionDecision

+ 1 more application in the report

Unlock 21 Castle Avenue, Datchet, Slough, SL3 9BA'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
  • The 45 documents, officer reports & conditions
  • What the pattern means for extending or converting here
£14.99one-off · instant

One time fee only - money back guarantee

On the street

Versus other Castle Avenue homes

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

21 Castle Avenue outperforms the street on epc rating by a wide margin.

Price per m²

£5,319

Street avg £4,757

On par

Floor Area

204 m²

Street avg 115 m²

Strongly above

Habitable Rooms

7 rooms

Street avg 5 rooms

Strongly above

CO₂ Emissions

4.1 t/year

Street avg 6.1 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 Slough district page.
Full Slough report

Crime

298/mo

Steady year-on-year across the wider district.

Nearest stop

0.2 km

Slough Road — bus stop.

Closest school

0.8 km

Churchmead Church of England (VA) School. 23 schools nearby.

Nearest schools

  • Churchmead Church of England (VA) SchoolSecondary768m
  • Datchet St Mary's CofE Primary SchoolPrimary1.1km
  • Ditton Park AcademySecondary1.1km
  • Upton Court Grammar SchoolSecondary1.5km

Nearest stops

  • Slough RoadBus stop207m
  • Whites LaneBus stop247m
  • Eton RoadBus stop437m
  • The MyrkeBus stop711m

Most reported crime locally

  • Violence & Sexual Offences1,666 reports37%
  • Anti-social Behaviour506 reports11%
  • Vehicle Crime488 reports11%
  • Criminal Damage & Arson388 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 SL3 9BA from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for SL3 9BA

Daytime· 07:00 – 23:00

58.0dB

Moderate
Night-time road noise heatmap for SL3 9BA

Night-time· 23:00 – 07:00

52.5dB

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 £1,645 · 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.
£908k

1 Beaulieu Close, Datchet

SL3 9DD

4 bed2 bath
£862k

1 Elmcroft, Datchet

SL3 9DS

4 bed3 bath
£677k

1 Ditton Road, Datchet

SL3 9LJ

4 bed2 bath
£1.1m

1 Ellesmere Close, Datchet

SL3 9AA

5 bed
£503k

1 Dawn Redwood Close, Horton

SL3 9QD

4 bed1 bath
£786k

1 Eton Close, Datchet

SL3 9BE

5 bed2 bath
£611k

1 Fairfield Avenue, Datchet

SL3 9NQ

3 bed1 bath
£545k

1 Fairfield Close, Datchet

SL3 9NG

3 bed1 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 21 Castle Avenue is modelled from its 204 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SL3 9BA. 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 21 Castle Avenue. 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 21 Castle Avenue was lodged in April 2022 at band C and is valid until April 2032. 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 21 Castle Avenue. 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 15 months, which places each incident at an approximate point. The 23 schools and 30 stops listed are measured in a straight line from SL3 9BA, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Council tax band
21 Castle Avenue is in council tax band E. 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 21 Castle Avenue, Datchet, Slough, SL3 9BA. Each answer is also embedded as structured data for search engines.

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