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Get started21a, Ash Grove, Bromley, London, SE20 7RD
3 sales on record
About 21a
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
21a is a one-bedroom semi-detached house in Bromley, London, London (SE20 7RD). It has a recorded floor area of 53 m² (around 570 sq ft), construction records dating it to 1900-1929 and council tax band C. At 53 m² this is the 7th smallest of 31 units on EPC record in the building, where floor areas span 35–129 m². The building's EPC ratings span E to C across 31 units on file. Period features are noted in the property record. The latest certificate (March 2014) shows a D (score 63), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 75). The latest certificate is from March 2014, so improvements made since then won't be reflected.
Sale prices here have outpaced London HPI: 11.6% per year against 0% for the wider region. Today's modelled estimate of £290,000 is 20.8% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£421/sq ft) was about 42.2% above the typical sold price in the postcode. At 53 m² it sits well below the postcode median (77 m² across 30 EPCs), making it one of the more compact homes locally. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Last sold in September 2014, so it's been off the market for around 12 years.
What this property has
Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.
Inside
- Bedrooms1
- Bathrooms1
Outside
- Communal gardenYes
Building
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
21a's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 12 Mar 2024
Planning history
Applications and permits filed against 21a, Ash Grove, Bromley, London, SE20 7RD, sourced from the PlanIt planning register.
21a has 2 separate extension applications on the council record.
- Jun 2015ExtensionFullGranted
Extension: Single storey · Rear of property
Single storey rear extension
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
21a has more than quadrupled in price since its earliest registered sale in 1999.
Current estimate
See how we calculated this£290,000
Modelled from EPC, postcode comparables and a sale-price growth of 11.6% per year over 16 years.
Last sold (2014)
£240,000
Growth on file: 11.6% per year over 16 years.
Sales timeline
Full property reportLaunch offer · 33% off
The complete analysis of 21a, Ash Grove, Bromley, London, SE20 7RD
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
Versus other Ash Grove homes
Four headline reads against 16 similar flats on this street, drawn from the latest EPC and Land Registry data.
On habitable rooms, 21a runs well behind the street norm.
Price per m²
£4,528
Street avg £4,368
Floor Area
53 m²
Street avg 61 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
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
Ash Grove (SE20) — bus stop.
Road noise across the postcode
Modelled day and night-time noise levels around SE20 7RD from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
51.8dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 86 points of interest in total.
Common questions
The questions buyers, sellers and homeowners most often ask about 21a, Ash Grove, Bromley, London, SE20 7RD. Each answer is also embedded as structured data for search engines.