5 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
About 5 The Firs
5 The Firs is a four-bedroom detached house in Grendon Underwood, Aylesbury, Aylesbury (HP18 0RW). It has a recorded floor area of 180 m² (around 1938 sq ft) and council tax band F. The latest certificate (July 2016) shows a C (score 79), near the top of the C band. The recommended improvements would push it to B (score 86). Main heating runs on electricity: electricity, unspecified tariff. The latest certificate is from July 2016, so improvements made since then won't be reflected. Other recorded features include notable views and outbuildings. The home occupies a corner plot.
At 180 m² the property is well over the postcode median (74 m² across 7 EPCs), placing it in the larger end of the local stock. Across 2017–2020, sale prices on this property compounded at -0.7% per year. Today's modelled estimate of £772,000 is 18.8% above the 2020 sale price. Last sale on file: £650,000 in July 2020.
What this property has
Inside
- Bedrooms4
- Bathrooms4
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenFront and rear
- GarageDouble
- OutbuildingsYes
- Notable viewsYes
- Corner plotYes
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 19 Jul 2026
EPC Rating
Certificate validity
Expired on 19 July 2026
Get a survey for this property
Level 3 Building Survey
Because the property has permanent outbuildings, we believe a Level 3 building survey should be considered.
From £1,220 · Includes VAT
Planning history
5 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.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£772,000
Modelled from EPC, postcode comparables and a sale-price growth of -0.7% per year over 3 years.
£650,000
Growth on file: -0.7% per year over 3 years.
Sales timeline
9 July 2020Most recent
£650,000
-2.3%over 3 years20 March 2017
£665,000
Median price across the last 5 sales in HP18 0RW: £317,000 (2025–2020).
Nearby sales in HP18 0RW
7 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
Sold Dec 2025
£317,0008 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
Sold Apr 2023
£325,0001 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
Sold Oct 2022
£220,0004 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
Sold Jun 2022
£792,5003 The Firs, Grendon Underwood, Aylesbury, HP18 0RW
Sold Jul 2019
£575,000
Versus other The Firs homes
5 The Firs is notably below the street on co₂ emissions.
Price per m²
£3,611
Street avg £3,772
Floor Area
180 m²
Street avg 122 m²
CO₂ Emissions
3.0 t/year
Street avg 1.9 t/year
Years Held
6 years
Street avg 5 years
Similar properties nearby
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The neighbourhood at a glance
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.
Road noise across the postcode

Daytime· 07:00 – 23:00
41.7dB

Night-time· 23:00 – 07:00
35.5dB







