21 Grasmere Avenue, Blackburn, BB1 8LD
About 21 Grasmere Avenue
21 Grasmere Avenue is a three-bedroom semi-detached house in Blackburn (BB1 8LD). It has a recorded floor area of 114 m² (around 1227 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (May 2021) shows an E (score 48), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 81), a 3-band jump. It has already been extended once and our model flags further extension potential, a sign of buyer flexibility.
At 114 m² the property is well over the postcode median (77 m² across 28 EPCs), placing it in the larger end of the local stock. One planning record on file: an extension approved in 2021. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £255,000 is 10.9% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£187/sq ft) was about 17.2% above the typical sold price in the postcode. Sold September 2021 for £230,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Dining roomYes
Outside
- Private gardenYes
- GarageSingle, Detached
Building
- Previously extendedYes
- Extension potentialPossible
Everything you need to know about 21 Grasmere Avenue
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
21 Grasmere Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
1 application on record at 21 Grasmere Avenue, Blackburn, BB1 8LD
- Nov 2021ExtensionFullOutcome in report
Extension: Rear of property
Proposed front bay window, hip to gable roof addition, raising of ridge to rear single storey extension, addition dormer extensions and ground floor rear extension.
- Documents
- 8 docs on file
- Reference
- 10/21/1099
Unlock 21 Grasmere Avenue, Blackburn, BB1 8LD'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- Every decision — granted, refused or withdrawn (1 on record)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 1 notable nearby
- The 8 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Latest sale on 21 Grasmere Avenue was the highest on Land Registry record across the postcode.
£255,000
Modelled from EPC, postcode comparables.
£230,000
Recorded with HM Land Registry.
Sales timeline
2 September 2021Most recent
£230,000
Median price across the last 5 sales in BB1 8LD: £170,000 (2025–2020).
Nearby sales in BB1 8LD
Versus other Grasmere Avenue homes
21 Grasmere Avenue outperforms the street on habitable rooms by a wide margin.
Price per m²
£2,018
Street avg £1,951
Floor Area
114 m²
Street avg 80 m²
Habitable Rooms
6 rooms
Street avg 4 rooms
CO₂ Emissions
7.4 t/year
Street avg 4.5 t/year
Everything you need to know about 21 Grasmere Avenue
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
3/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Lammack Road — bus stop.
Closest school
0.2 km
Lammack Primary School. 29 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.