Model valuation£417,0008 Busby Close
Local market context
20 Granville Avenue, Cardiff, CF5 1BW
1 planning record
Estimated value
£531,000
- Since the 2015 sale (£339,950)+56%
- Against CF5 1BW's recent median (£470,000)+13%
Newest record on this page: October 2025. 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
111 m²
1195 sq ft
Energy rating
D
Score 66
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
£531,000
- Against its 2015 sale (£339,950)+56%
- Against CF5 1BW's recent median (£470,000)+13%
Your note and figure are shown publicly on this page.
How the estimate is made
The estimate for 20 Granville Avenue is modelled from its 111 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
111 m² from the EPC lodged in January 2023
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.
20 Granville Avenue valuation sits well clear of the typical sold price in this postcode.
Sales timeline
28 May 2015Most recent
£339,950
+40.2%over 3 years14 September 2011
£242,500
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
Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks 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 20 Granville Avenue
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
20 Granville Avenue is a three-bedroom semi-detached house in Cardiff (CF5 1BW). It has a recorded floor area of 111 m² (around 1195 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (January 2023) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since July 2011. Between certificates, lighting went from Average to Very Good; while wall efficiency dropped from Good to Average and roof efficiency dropped from Very Good to Average. The recommended improvements would push it to C (score 78). Records show the property has been extended at some point in its history.
One planning application is currently pending a decision in 2025. Across 2011–2015, sale prices on this property compounded at 9.6% per year. Today's modelled estimate of £531,000 sits 56.2% above the 2015 sale of £339,950. On a £-per-square-foot basis, the last sale (£285/sq ft) was about 26.1% above the typical sold price in the postcode. Last sold in May 2015, so it's been off the market for around 11 years.
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 gardenRear
- GarageSingle
Building
- Previously extendedYes
- RefurbishedYes
Before you decide
Everything you need to know about 20 Granville Avenue
The true value, the hidden risks and the full sale history, in one report.
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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.
Current Certificate(1 of 2)
Jan 2023
EPC Rating
A
B
C
D
D66
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
3.8 t/year
Occupancy
Owner Occupied
Certificate validity
Valid until 19 January 2033
Property Improvements
Changes detected from historical EPC data
Jan 2023from Jul 2011
Hot Water
SolarMain System
Hot water system changed
Low Energy Lighting
44%93%
More low energy lighting installed
Planning history
Applications and permits filed against 20 Granville Avenue, Cardiff, CF5 1BW, sourced from the PlanIt planning register.
An application for a loft conversion is currently awaiting a decision.
1 application on record at 20 Granville Avenue, Cardiff, CF5 1BW
1 live now0decisions1extensions8documents2nearby
- Oct 2025Loft ConversionFullOutcome in report
Extension: Single storey · Side and rear of property
Demolition of existing rear extension and garage/ store. New single storey wrap around side and rear extension with hip to gable loft conversion with rear dormer.
Extension- Documents
- 8 docs on file
- Reference
- 25/02374/HSE
Unlock 20 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
- All 1 application on this property in full, plus 2 notable nearby
- The 8 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.
On co₂ emissions, 20 Granville Avenue stands well clear of the street.
Price per m²
£3,063
Street avg £2,969
Floor Area
111 m²
Street avg 109 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.8 t/year
Street avg 5.0 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.
Get a survey for this property
Level 2 HomeBuyer Report
Mid 20th centurySemi-Detached 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 Conybeare Road
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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 20 Granville Avenue is modelled from its 111 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 20 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 20 Granville Avenue was lodged in January 2023 at band D and is valid until January 2033. 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 20 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
- 20 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 20 Granville Avenue, Cardiff, CF5 1BW. Each answer is also embedded as structured data for search engines.
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Keep exploring
- Every home in CF5 1BWSold prices, values and energy ratings for the postcode
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- 20 Granville Avenue, Cardiff valuationHow the estimate is built and what moves it
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- Report on another addressLook up any home in England and Wales