21a, Mountside, Guildford, GU2 4JD
About 21a
21a is a detached house in Guildford (GU2 4JD). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to 1967-1975 and council tax band G. The latest certificate (May 2010) shows an F (score 35), near the bottom of the EPC scale. The recommended improvements would lift it to D (score 58), a 2-band jump. The latest certificate is from May 2010, so improvements made since then won't be reflected.
It hasn't traded since September 2010, a hold of 16 years that's notably long for the area. At 71 m² it sits well below the postcode median (149 m² across 13 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £847,000 sits 52.6% above the 2010 sale of £555,000. On a £-per-square-foot basis, the last sale (£727/sq ft) was about 79.7% above the typical sold price in the postcode. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved.
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Energy performance
21a sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 28 May 2020
EPC Rating
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Planning history
2 applications on record at 21a, Mountside, Guildford, GU2 4JD
- Aug 2017ExtensionFullOutcome in report
Extension: Single storey · Rear of property
Single storey rear extension, enlarged rear dormer together with changes to fenestration and external material alterations following removal of rear conservatory [As amended by plans received on 10/08/17].
- Documents
- 12 docs on file
- Reference
- 17/P/01351
- More recent applications — locked
- OutlineDec 2017Decision
Unlock 21a, Mountside, Guildford, GU2 4JD's full planning history
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- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 2 notable nearby
- The 18 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
21a valuation sits well clear of the typical sold price in this postcode.
£847,000
Modelled from EPC, postcode comparables.
£555,000
Recorded with HM Land Registry.
Sales timeline
8 September 2010Most recent
£555,000
Median price across the last 5 sales in GU2 4JD: £926,500 (2024–2021).
Versus other Mountside homes
21a is notably below the street on epc rating.
Price per m²
£7,821
Street avg £5,410
Floor Area
71 m²
Street avg 156 m²
Habitable Rooms
6 rooms
Street avg 7 rooms
CO₂ Emissions
11.0 t/year
Street avg 7.5 t/year
Everything you need to know about 21a
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Mountside — bus stop.
Closest school
0.2 km
St Nicolas' Church of England Infant School. 16 schools 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
51.8dB
Night-time· 23:00 – 07:00
42.7dB