12 Portlock Road, Maidenhead, SL6 6DZ
About 12 Portlock Road
12 Portlock Road is a three-bedroom mid-terrace house in Maidenhead (SL6 6DZ). It has a recorded floor area of 104 m² (around 1119 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (June 2025) shows a C (score 74). When first surveyed in October 2018 the rating was F, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Good to Very Good and hot-water efficiency went from Very Poor to Good. The recommended improvements would push it to B (score 85). The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal. Period features are noted in the property record. Records show the property has been extended at some point in its history.
Today's modelled estimate of £651,000 sits 97.3% above the 2019 sale of £330,000. 3 planning records sit against the property, 3 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. At 104 m² it's 22.4% larger than the typical home in the postcode (85 m² median across 38 EPCs). Its energy rating outperforms most of the postcode (better than 76% of similar EPCs). Most recent transfer: January 2019 at £330,000.
What this property has
Inside
- Bedrooms3
- Bathrooms2
- EnsuiteYes
- FireplaceYes
Outside
- Private gardenYes
- DrivewayYes
Building
- Underfloor heatingYes
- Period featuresYes
- Previously extendedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Windows upgraded, improving insulation
Wall insulation improved
Loft insulation upgraded to recommended levels
Floor insulation added or improved
More low energy lighting installed
Planning history
12 Portlock Road has 2 separate extension applications on the council record.
- Jun 2019ExtensionOutlineIn report
Extension: Single storey · Rear of property
Single storey rear extension no greater than 5.23m in depth, 2.8m high with an eaves height of 2.5m
- Documents
- 6 docs on file
- Reference
- 19/01247/PDXL
- May 2019ExtensionFullIn report
Extension: Rear of property
Proposed ground and first floor rear extensions
- Documents
- 8 docs on file
- Reference
- 19/00642/FULL
We flagged 1 thing worth checking at 12 Portlock Road
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
12 Portlock Road valuation sits well clear of the typical sold price in this postcode.
£651,000
Modelled from EPC, postcode comparables.
£330,000
Recorded with HM Land Registry.
Sales timeline
18 January 2019Most recent
£330,000
Median price across the last 5 sales in SL6 6DZ: £600,000 (2025–2024).
Nearby sales in SL6 6DZ
Versus other Portlock Road homes
12 Portlock Road outperforms the street on epc rating by a wide margin.
Price per m²
£3,173
Street avg £5,167
Floor Area
104 m²
Street avg 93 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
2.5 t/year
Street avg 5.0 t/year
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Clara Court — bus stop.
Closest school
0.4 km
All Saints Church of England Junior School. 21 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
51.5dB

Night-time· 23:00 – 07:00
41.0dB







