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21 Blackdown Close, Stevenage, SG1 6AY

4 sales on record1 planning record
Property type
Semi-detached
Bedrooms
4
Bathrooms
2
Floor area
99 m²
1060 sq ft
Energy rating
C
Score 72
Council tax
Band E
Tenure
Owner Occupied
Overview

About 21 Blackdown Close

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

21 Blackdown Close is a four-bedroom semi-detached house in Stevenage (SG1 6AY). It has a recorded floor area of 99 m² (around 1060 sq ft), construction records dating it to 2003-2006 and council tax band E. The latest certificate (June 2009) shows a C (score 72). The latest certificate is from June 2009, so improvements made since then won't be reflected. Other recorded features include a basement. Records show the property has been extended at some point in its history.

Last sale on file: £435,000 in June 2021. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. At 99 m² it's 23.1% larger than the typical home in the postcode (80 m² median across 9 EPCs). Across 2000–2021, sale prices on this property compounded at 5.1% per year. On a £-per-square-foot basis, the last sale (£410/sq ft) was about 80.4% above the typical sold price in the postcode. One historical planning record sits against the property in 2013.

Before you offer

Know exactly what you're buying at 21 Blackdown Close

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

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Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

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
  • Bathrooms2
  • EnsuiteYes
  • BasementYes

Outside

  • Private gardenRear
  • GarageYes

Building

  • Previously extendedYes
  • RefurbishedYes
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 Blackdown Close's EPC is over a decade old — improvements since won't be reflected.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 23 Jun 2019

EPC Rating

A
B
C
C72
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
3.3 t/year
Occupancy
Owner Occupied
Planning

Planning history

Applications and permits filed against 21 Blackdown Close, Stevenage, SG1 6AY, sourced from the PlanIt planning register.
  1. Oct 2013
    ExtensionFull
    In report

    Extension: Single storey · Side of property

    Single storey side extension

    Agent
    James Rush Associates
    Documents
    1 doc on file
    Reference
    13/02164/1HH
    View planning record

What's in 21 Blackdown Close, Stevenage, SG1 6AY's planning history?

Refusals, disputes and full decisions on this property and nearby, in the report.

Price

Sales history & valuation

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

21 Blackdown Close has more than doubled in price since the earliest registered sale in 2000.

Current estimate

£476,000

Modelled from EPC, postcode comparables and a sale-price growth of 5.1% per year over 21 years.

See how we calculated this
Last sold (2021)

£435,000

Growth on file: 5.1% per year over 21 years.

Sales timeline

  1. 30 June 2021Most recent

    £435,000

    +81.3%over 11 years
  2. 19 October 2009

    £240,000

    -2.8%over 5 years
  3. 29 June 2004

    £247,000

    +59.9%over 3 years
  4. 12 July 2000

    £154,500

Median price across the last 5 sales in SG1 6AY: £368,000 (2021–2018).

Before you offer

Everything we know about 21 Blackdown Close, in one report

What it's really worth, what could be wrong, and the planning, sales and area data in full.

  • Am I paying too much?
  • Is something wrong with it?
  • Is the agent's story true?
  • Will it hold its value?
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Preview of the full property report
On the street

Versus other Blackdown Close homes

Four headline reads against 9 similar houses on this street, drawn from the latest EPC and Land Registry data.

21 Blackdown Close is notably below the street on years held.

Price per m²

£4,416

Street avg £3,418

Strongly above

Floor Area

99 m²

Street avg 86 m²

Above

Habitable Rooms

6 rooms

Street avg 5 rooms

Strongly above

CO₂ Emissions

3.3 t/year

Street avg 3.0 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 Stevenage district page.

Reported crime in the wider district is trending notably upward year-on-year.

Crime

20/mo

Rising year-on-year across the wider district.

Nearest stop

0.3 km

Fairfield Way — bus stop.

Closest school

0.3 km

Round Diamond Primary School. 16 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 SG1 6AY from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for SG1 6AY

Daytime· 07:00 – 23:00

46.4dB

Low
Night-time road noise heatmap for SG1 6AY

Night-time· 23:00 – 07:00

36.7dB

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 Blackdown Close, Stevenage, SG1 6AY. Each answer is also embedded as structured data for search engines.