Model valuation£417,0008 Busby Close
Local market context
21 Grasmere Avenue, Blackburn, BB1 8LD
Extendable1 planning record
Estimated value
£247,000
- Since the 2021 sale (£230,000)+7%
- Against BB1 8LD's recent median (£185,000)+34%
Newest record on this page: March 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.
Property type
Semi-detached
Bedrooms
3
Bathroom
1
Floor area
114 m²
1227 sq ft
Energy rating
E
Score 48
Council tax
Band D
Tenure
Owner Occupied
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
£247,000
- Against its 2021 sale (£230,000)+7%
- Against BB1 8LD's recent median (£185,000)+34%
Your note and figure are shown publicly on this page.
How the estimate is made
The estimate for 21 Grasmere Avenue is modelled from its 114 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in BB1 8LD. 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
114 m² from the EPC lodged in May 2021
Sales of this home
1 sale recorded, the latest in 2021
Recent sales in BB1 8LD
5 sales, median £185,000 (2026–2025)
This page or the full report?
| Data | This page | Full report |
|---|---|---|
| Sales | Latest sale shown: March 2026 | Latest available records, read when you order |
| Valuation | Estimate from the last refresh | Analysed against comparable sales |
| Planning | 1 application | Full history, plus nearby schemes |
| Flood risk | Not shown | Included |
Sales history & valuation
Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
Sales timeline
2 September 2021Most recent
£230,000
Median price across the last 5 sales in BB1 8LD: £185,000 (2026–2025).
Nearby sales in BB1 8LD
What this page doesn't show
1 potential issue has already been flagged for 21 Grasmere Avenue, Blackburn, BB1 8LD. The detail, evidence and what to ask about it are in the Risks Report.
- Larger development activity nearbyIn 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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About 21 Grasmere Avenue
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
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 29 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. On a £-per-square-foot basis, the last sale (£187/sq ft) was about 16.7% 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
Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.
Inside
- Bedrooms3
- Bathrooms1
- Dining roomYes
Outside
- Private gardenYes
- GarageSingle, Detached
Building
- Previously extendedYes
- Extension potentialPossible
Before you decide
Everything you need to know about 21 Grasmere Avenue
The true value, the hidden risks and the full sale history, in one report.
Larger development activity nearby
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The data behind every report
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
21 Grasmere Avenue's carbon output runs well above what efficient homes in the postcode produce.
Current Certificate
May 2021EPC Rating
A
B
C
D
E
E48
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Poor
Windows
Average
CO2 Emissions
7.4 t/year
Occupancy
Owner Occupied
Certificate validity
Valid until 17 May 2031
Planning history
Applications and permits filed against 21 Grasmere Avenue, Blackburn, BB1 8LD, sourced from the PlanIt planning register.
1 application on record at 21 Grasmere Avenue, Blackburn, BB1 8LD
1decisions1extensions8documents1nearby
- 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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Versus other Grasmere Avenue homes
Four headline reads against 29 similar houses on this street, drawn from the latest EPC and Land Registry data.
21 Grasmere Avenue outperforms the street on habitable rooms by a wide margin.
Price per m²
£2,018
Street avg £2,069
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
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the Blackburn district page.
Crime
462/mo
Falling 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.
Nearest schools
- Lammack Primary SchoolPrimary182m
- Pleckgate High SchoolSecondary492m
- St Gabriel's Church of England Primary SchoolPrimary882m
- Holy Souls Roman Catholic Primary School BlackburnPrimary885m
Nearest stops
- Lammack RoadBus stop144m
- Yew Tree DrBus stop194m
- Higher Waves FarmBus stop200m
- Barker LaneBus stop283m
Most reported crime locally
- Violence & Sexual Offences2,581 reports35%
- Anti-social Behaviour1,939 reports26%
- Criminal Damage & Arson514 reports7%
- Vehicle Crime481 reports7%
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Get a survey for this property
Level 3 Building Survey
Mid 20th centurySemi-Detached BungalowEPC EExtended multiple times (2+ extensions)
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
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Start your researchHow to read this page
Where every figure above comes from, how current it is and what it can't tell you.
- How the estimate is made
- The estimate for 21 Grasmere Avenue is modelled from its 114 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in BB1 8LD. 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. 1 sale is recorded for 21 Grasmere 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 Grasmere Avenue was lodged in May 2021 at band E and is valid until May 2031. Floor area, heating and insulation details on this page come from it.
- Planning records
- Planning applications are collected from local authority registers through PlanIt. 1 application is matched to 21 Grasmere 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 16 months, which places each incident at an approximate point. The 29 schools and 30 stops listed are measured in a straight line from BB1 8LD, not by walking route.
- Council tax band
- 21 Grasmere Avenue is in council tax band D. 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.
Common questions
The questions buyers, sellers and homeowners most often ask about 21 Grasmere Avenue, Blackburn, BB1 8LD. Each answer is also embedded as structured data for search engines.
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Keep exploring
- Every home in BB1 8LDSold prices, values and energy ratings for the postcode
- BB 1 property marketPrices, postcodes, schools and transport across the district
- 21 Grasmere Avenue, Blackburn valuationHow the estimate is built and what moves it
- UK house price mapExplore prices by district, year by year
- Report on another addressLook up any home in England and Wales