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Get started12a, Calton Avenue, Southwark, London, SE21 7DQ
1 planning record
About 12a
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
12a is a mid-terrace house in Southwark, London, London (SE21 7DQ). It has a recorded floor area of 30 m² (around 323 sq ft), construction records dating it to before 1900 and council tax band C. At 30 m² this is the smallest unit on EPC record across the building (30–72 m²). The building's EPC ratings span E to C across 16 units on file. The latest certificate (April 2020) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it C (June 2009); the latest reading is one band lower. The recommended improvements would push it to C (score 76).
At 30 m² it sits well below the postcode median (48 m² across 15 EPCs), making it one of the more compact homes locally. 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
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
12a's carbon output is low for the local stock.
Current Certificate(1 of 2)
Apr 2020
EPC Rating
A
B
C
D
D68
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Poor
CO2 Emissions
1.5 t/year
Occupancy
Owner Occupied
Planning history
Applications and permits filed against 12a, Calton Avenue, Southwark, London, SE21 7DQ, sourced from the PlanIt planning register.
- Jul 2022Tree WorksTreesGranted
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.
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
12a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
Current estimate
See how we calculated this£343,000
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.
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The complete analysis of 12a, Calton Avenue, Southwark, London, SE21 7DQ
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
Versus other Calton Avenue homes
Four headline reads against 9 similar flats on this street, drawn from the latest EPC and Land Registry data.
12a is notably below the street on floor area.
EPC Rating
68 (D)
Street avg 61 (D)
Floor Area
30 m²
Street avg 49 m²
CO₂ Emissions
1.5 t/year
Street avg 2.7 t/year
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the London district page.
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.
Road noise across the postcode
Modelled day and night-time noise levels around SE21 7DQ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
52.2dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 97 points of interest in total.
Common questions
The questions buyers, sellers and homeowners most often ask about 12a, Calton Avenue, Southwark, London, SE21 7DQ. Each answer is also embedded as structured data for search engines.