12a, Greenacre Close, Great Ayton, Middlesbrough, TS9 6PG
About 12a
12a is a three-bedroom semi-detached house in Great Ayton, Middlesbrough, Middlesbrough (TS9 6PG). It has a recorded floor area of 98 m² (around 1055 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (November 2018) shows an F (score 38), near the bottom of the EPC scale. The recommended improvements would lift it to C (score 77), a 3-band jump. Our model identifies extension potential, subject to local planning policy. The home occupies a cul-de-sac position.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. One planning record on file: an extension approved in 2019. Past consents include an extension, meaningful when judging how the property has evolved. Across 2002–2019, sale prices on this property compounded at 1.4% per year. Today's modelled estimate of £248,000 is 40.1% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£168/sq ft) was about 17.7% below the postcode norm. Last sale on file: £177,000 in September 2019.
Know exactly what you're buying at 12a
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Dining roomYes
Outside
- GarageYes
- Cul-de-sacYes
Building
- Heating systemGas
- RefurbishedYes
- Extension potentialPossible
Energy performance
12a sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Planning history
- Nov 2019ExtensionFullIn report
Extension: Single storey · Side of property
Single storey side extension, alterations to front dormer and internal alterations.
- Documents
- 10 docs on file
- Reference
- 19/02111/FUL
We flagged 1 thing worth checking at 12a
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
12a's sale-price growth has lagged the wider UK trajectory across its history on file.
£248,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.4% per year over 17 years.
£177,000
Growth on file: 1.4% per year over 17 years.
Sales timeline
19 September 2019Most recent
£177,000
+26.5%over 17 years16 May 2002
£139,950
Median price across the last 5 sales in TS9 6PG: £264,000 (2025–2020).
Nearby sales in TS9 6PG
8 Greenacre Close, Great Ayton, Middlesbrough, TS9 6PG
Sold Oct 2025
£292,00022 Greenacre Close, Great Ayton, Middlesbrough, TS9 6PG
Sold Mar 2025
£260,00019 Greenacre Close, Great Ayton, Middlesbrough, TS9 6PG
Sold Oct 2024
£245,00012 Greenacre Close, Great Ayton, Middlesbrough, TS9 6PG
Sold Oct 2022
£280,00023 Greenacre Close, Great Ayton, Middlesbrough, TS9 6PG
Sold Oct 2020
£264,000
Everything we know about 12a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Greenacre Close homes
On epc rating, 12a runs well behind the street norm.
Price per m²
£1,806
Street avg £2,079
Floor Area
98 m²
Street avg 114 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
8.8 t/year
Street avg 5.5 t/year
Similar properties nearby
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1 Firbank House, School Lane, Great Ayton
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1 Cliffe Terrace, Great Ayton
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TS9 6GA
1 Edward Kitching Terrace, Great Ayton
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The neighbourhood at a glance
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
0.2 km
Buck Inn — bus stop.
Closest school
0.4 km
Marwood Church of England Voluntary Controlled Infant School, Great Ayton. 2 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
49.3dB

Night-time· 23:00 – 07:00
40.6dB