12c, Calton Avenue, Southwark, London, SE21 7DQ
About 12c
12c is a mid-terrace house in Southwark, London, London (SE21 7DQ). It has a recorded floor area of 68 m² (around 732 sq ft), construction records dating it to before 1900 and council tax band C. At 68 m² this is the 14th smallest of 16 units on EPC record in the building, where floor areas span 30–72 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (80 versus a worst of 45). The latest certificate (February 2024) shows a C (score 80), near the top of the C band. When first surveyed in November 2008 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Very Good, window efficiency went from Very Poor to Good and lighting went from Poor to Very Good. The recommended improvements would push it to B (score 82).
At 68 m² the property is well over the postcode median (48 m² across 15 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. One planning record on file: tree works approved in 2022. Past consents include tree works, meaningful when judging how the property has evolved.
Energy performance
12c ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
More low energy lighting installed
Single glazing replaced with double or better glazing
Wall insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
1 application on record at 12c, Calton Avenue, Southwark, London, SE21 7DQ
- Jul 2022Tree WorksTreesOutcome in report
T12- Ailanthus, Calton Avenue, Crown lift 2mT13 & T16 Box Elder Maple, remove deadwoodT14 & T15 Cherry Plum, remove dead wood,lateral reduction to provide 2m clear from the property.
- Documents
- 3 docs on file
- Reference
- 22/AP/1943
Unlock 12c, Calton Avenue, Southwark, London, SE21 7DQ's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full
- The 3 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
12c has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£465,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Versus other Calton Avenue homes
On epc rating, 12c stands well clear of the street.
EPC Rating
80 (C)
Street avg 60 (D)
Floor Area
68 m²
Street avg 45 m²
CO₂ Emissions
1.3 t/year
Street avg 2.8 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Dulwich Village — bus stop.
Closest school
0.2 km
Dulwich Village Church of England Infants' School. 67 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
52.2dB

Night-time· 23:00 – 07:00
42.1dB







