Model valuation£417,0008 Busby Close
Local market context
8 The Firs is a two-bedroom mid-terrace house in Grendon Underwood, Aylesbury, Aylesbury (HP18 0RW). It has a recorded floor area of 73 m² (around 786 sq ft), construction records dating it to 2012 onwards and council tax band C. The latest certificate (July 2026) shows a C (score 78), near the top of the C band. Earlier certificates rated it B (July 2016); the latest reading is one band lower. Between certificates, hot-water efficiency went from Poor to Average and main heating went from Poor to Good; while wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average. The recommended improvements would lift it to A (score 92), a 2-band jump. Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition.
Across 2016–2023, sale prices on this property compounded at 5.4% per year. On a £-per-square-foot basis, the last sale (£414/sq ft) was about 27.4% above the typical sold price in the postcode. Last sale on file: £325,000 in April 2023.
8 The Firs's carbon output is low for the local stock.
Certificate validity
Valid until 17 July 2036
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency improved
Get a survey for this property
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
8 The Firs has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
£303,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.4% per year over 7 years.
£325,000
Growth on file: 5.4% per year over 7 years.
26 April 2023Most recent
£325,000
+41.5%over 6 years8 September 2016
£229,700
Median price across the last 5 sales in HP18 0RW: £317,000 (2025–2020).
7 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
Sold Dec 2025
1 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
Sold Oct 2022
4 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
Sold Jun 2022
5 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
Sold Jul 2020
3 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
Sold Jul 2019
8 The Firs outperforms the street on price per m² by a wide margin.
Price per m²
£4,452
Street avg £3,604
Floor Area
73 m²
Street avg 144 m²
CO₂ Emissions
0.5 t/year
Street avg 2.4 t/year
Years Held
3 years
Street avg 6 years
Property research, connected
Explore sale histories, valuations, energy ratings and local areas. Ask the assistant to connect the details and take your research further.
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Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
77/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
The Swan PH — bus stop.
Closest school
0.3 km
Grendon Underwood School. 1 school nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.

Daytime· 07:00 – 23:00
41.7dB

Night-time· 23:00 – 07:00
35.5dB