Model valuation£417,0008 Busby Close
Local market context
21 Granville Avenue, Cardiff, CF5 1BW
1 planning record
Estimated value
£456,000
- Since the 2015 sale (£299,950)+52%
- Against CF5 1BW's recent median (£470,000)-3%
Newest record on this page: May 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.
Property type
Mid terrace
Habitable rooms
5
From EPC
Floor area
96 m²
1033 sq ft
Energy rating
D
Score 55
Council tax
Band F
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
£456,000
- Against its 2015 sale (£299,950)+52%
- Against CF5 1BW's recent median (£470,000)-3%
Your note and figure are shown publicly on this page.
How the estimate is made
The estimate for 21 Granville Avenue is modelled from its 96 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF5 1BW. 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
96 m² from the EPC lodged in July 2015
Sales of this home
2 sales recorded, the latest in 2015
Recent sales in CF5 1BW
5 sales, median £470,000 (2025–2016)
This page or the full report?
| Data | This page | Full report |
|---|---|---|
| Sales | Latest sale shown: May 2025 | 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.
21 Granville Avenue changed hands twice within eighteen months — unusual for the area.
Sales timeline
30 September 2015Most recent
£299,950
+36.3%over 7 months16 February 2015
£220,000
Median price across the last 5 sales in CF5 1BW: £470,000 (2025–2016).
Nearby sales in CF5 1BW
What this page doesn't show
1 potential issue has already been flagged for 21 Granville Avenue, Cardiff, CF5 1BW. The detail, evidence and what to ask about it are in the Risks Report.
- Recent ownership pattern worth a lookIn 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 Granville Avenue
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
21 Granville Avenue is a mid-terrace house in Cardiff (CF5 1BW). It has a recorded floor area of 96 m² (around 1033 sq ft), construction records dating it to 1930-1949 and council tax band F. The latest certificate (July 2015) shows a D (score 55), a step below the typical UK home. When first surveyed in December 2014 the rating was G, the property has climbed 3 bands since. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Very Poor to Good and main heating went from Very Poor to Good; while lighting dropped from Average to Very Poor. The recommended improvements would push it to C (score 76). The latest certificate is from July 2015, so improvements made since then won't be reflected.
Across 2015–2015, sale prices on this property compounded at 36.3% per year. Today's modelled estimate of £456,000 sits 52% above the 2015 sale of £299,950. On a £-per-square-foot basis, the last sale (£290/sq ft) was about 28.6% above the typical sold price in the postcode. One planning record on file: an extension approved in 2018. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved. 11 years since the last transfer (September 2015).
Before you decide
Everything you need to know about 21 Granville Avenue
The true value, the hidden risks and the full sale history, in one report.
Recent ownership pattern worth a look
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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 Granville Avenue'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 06 Jul 2025
Current Certificate(1 of 2)
Jul 2015
EPC Rating
A
B
C
D
D55
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
5.0 t/year
Occupancy
Owner Occupied
Certificate validity
Expired on 6 July 2025
Property Improvements
Changes detected from historical EPC data
Jul 2015from Dec 2014
EPC improved fromG13toD55
Heating System
Room HeatersGas Boiler
Upgraded to gas central heating
Heating Controls
ThermostatProg + TRVs
Heating controls upgraded for better temperature management
Hot Water
ImmersionMain System
Hot water system upgraded
Windows
AverageGood
Window efficiency improved
Low Energy Lighting
36%0%
Low energy lighting percentage decreased
Planning history
Applications and permits filed against 21 Granville Avenue, Cardiff, CF5 1BW, sourced from the PlanIt planning register.
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
1 application on record at 21 Granville Avenue, Cardiff, CF5 1BW
1decisions1extensions7documents2nearby
Flagged:Demolition
- Feb 2018DemolitionOutlineOutcome in report
Extension: Rear of property
DEMOLITION OF EXISTING REAR EXTENSION AND ERECTION OF NEW REAR EXTENSION TO TERRACED HOUSE.
Extension- Documents
- 7 docs on file
- Reference
- 18/00201/DCH
Unlock 21 Granville Avenue, Cardiff, CF5 1BW'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 2 notable nearby
- The 7 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Versus other Granville Avenue homes
Four headline reads against 17 similar houses on this street, drawn from the latest EPC and Land Registry data.
21 Granville Avenue is notably below the street on floor area.
Price per m²
£3,124
Street avg £2,965
Floor Area
96 m²
Street avg 110 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
5.0 t/year
Street avg 4.9 t/year
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the Cardiff district page.
Rail-style transport is unusually close for this postcode.
Crime
426/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
The Insole — bus stop.
Nearest stops
- The InsoleBus stop251m
- Pencisely RoadBus stop272m
- Chargot RoadBus stop331m
- Insole ShopsBus stop338m
Most reported crime locally
- Violence & Sexual Offences2,365 reports35%
- Anti-social Behaviour878 reports13%
- Public Order758 reports11%
- Shoplifting679 reports10%
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
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Level 2 HomeBuyer Report
Early 20th centuryMid-Terrace HouseEPC D
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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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1 Cumberland Street
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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 Granville Avenue is modelled from its 96 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF5 1BW. 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 Granville 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 Granville Avenue was lodged in July 2015 at band D and expired in July 2025, so a new one is needed to sell or let. 2 certificates are on record, which shows how the home has changed.
- Planning records
- Planning applications are collected from local authority registers through PlanIt. 1 application is matched to 21 Granville 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. Schools and stops are measured in a straight line from CF5 1BW.
- Council tax band
- 21 Granville Avenue is in council tax band F. 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 Granville Avenue, Cardiff, CF5 1BW. Each answer is also embedded as structured data for search engines.
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- Every home in CF5 1BWSold prices, values and energy ratings for the postcode
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