Model valuation£417,0008 Busby Close
Local market context
Estimated value
£407,000
Newest record on this page: March 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.
Our estimate
£407,000
Your note and figure are shown publicly on this page.
The estimate for 17 Colchester Avenue is modelled from its 130 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF23 9BN. 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.
Floor area
130 m² from the EPC lodged in January 2024
Sales of this home
2 sales recorded, the latest in 2024
Recent sales in CF23 9BN
5 sales, median £430,000 (2025–2015)
| Data | This page | Full report |
|---|---|---|
| Sales | Latest sale shown: March 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 |
Sale price has at least doubled since 2002.
11 June 2024Most recent
£378,000
+129.1%over 21 years29 August 2002
£165,000
Median price across the last 5 sales in CF23 9BN: £430,000 (2025–2015).
7 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Sold Mar 2025
5 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Sold Feb 2022
21 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Sold Oct 2020
35 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Sold May 2015
29 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Sold Mar 2015
One time fee only - money back guarantee
17 Colchester Avenue is a three-bedroom semi-detached house in Penylan, Cardiff, Cardiff (CF23 9BN). It has a recorded floor area of 130 m² (around 1399 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (January 2024) shows a D (score 61), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since November 2012. Between certificates, roof efficiency dropped from Very Good to Good and hot-water efficiency dropped from Average to Poor. The recommended improvements would lift it to B (score 84), a 2-band jump.
One planning record on file: an extension approved in 2024. Past consents include an extension, meaningful when judging how the property has evolved. Across 2002–2024, sale prices on this property compounded at 3.9% per year. On a £-per-square-foot basis, the last sale (£270/sq ft) was about 27.7% above the typical sold price in the postcode. Sold June 2024 for £378,000.
17 Colchester Avenue's carbon output runs well above what efficient homes in the postcode produce.
Certificate validity
Valid until 29 January 2034
Changes detected from historical EPC data
Heating controls changed
Hot water system upgraded
Single glazing replaced with double or better glazing
Cavity wall insulation installed
Floor insulation added or improved
More low energy lighting installed
Heating controls changed
Hot water system changed
Low energy lighting percentage decreased
Solar PV panels (30 kWp) installed
1 application on record at 17 Colchester Avenue, Penylan, Cardiff, CF23 9BN
Extension: Single storey · Rear of property
Part demolition of Ground Floor. Hip to gable roof extension. Conversion of the loft space to form an additional room. Construction of a single storey rear extension.
You're seeing the shape of it. The report has the substance.
One time fee only - money back guarantee
On years held, 17 Colchester Avenue runs well behind the street norm.
Price per m²
£2,908
Street avg £2,809
Floor Area
130 m²
Street avg 149 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
6.1 t/year
Street avg 6.7 t/year
Crime
169/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Colchester Avenue Top — bus stop.
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
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
CF23 9BY
CF23 9ER
CF23 9HE
CF23 9DD
CF23 9NZ
CF23 9DF
CF23 9BN
CF23 9BX
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