21b Boxall Road
SE21 7JS
- Flat
- 280 sq ft
- EPC D
What comparable sales show
Few close matches: a rough guide£282,000
Range £215,000 to £350,000 · £1,009 per sq ft
Rank in SE21 7JS
13th of 13
Postcode average £1,080,154
From completed sales of similar homes nearby, adjusted for floor area. It cannot see condition, layout or recent work, so it is not a valuation.
In short
21b Boxall Road is a flat in SE21 of about 280 sq ft.
Comparable completed sales nearby put it at £215,000 to £350,000, about £282,000 in the middle.
That makes it the 13th highest of the 13 homes we can compare in SE21 7JS, where the middle figure averages £1,080,154.
Across Southwark, average prices fell 2.1% in the year to August 2026.
Where in the range would yours sell?
Condition and improvements usually decide it, and only someone who sees the home can say.
Lower end
£215,000
Middle
£282,000
Upper end
£350,000
Done work since the records were made? Claim your home and tell us, or ask local agents where yours sits.
21b Boxall Road on the map
This home and the completed sales its figure is worked out from. Choose a pin for the address, size and date.
The Land Registry records a sale by its postcode, so pins sit at the postcode, close to the home, not on its doorstep. Map: contains OS data © Crown copyright and database rights 2026.
Energy performance certificate
From the official register for 21b Boxall Road, lodged 14 June 2025. Valid until 14 June 2035.
Rating now
D (67)
Could reach
C (76)
Built
1900–1929
What the assessor found
| Part of the home | Description | Energy efficiency |
|---|---|---|
| Walls | Solid brick, as built, no insulation (assumed) | Very poor |
| Roof | (another dwelling above) | – |
| Floor | Suspended, no insulation (assumed) | – |
| Windows | Partial double glazing | Poor |
| Heating | Boiler and radiators, mains gas | Good |
| Heating controls | Programmer, room thermostat and TRVs | Good |
| Hot water | From main system | Good |
| Lighting | Low energy lighting in all fixed outlets | Very good |
Estimated running costs
| Each year | Now | After the improvements |
|---|---|---|
| Heating | £405 | £249 |
| Hot water | £90 | £90 |
| Lighting | £38 | £38 |
The assessor's estimates at the energy prices in use when the certificate was made (2025), for a typical household. Today's bills will differ.
Improvements the certificate recommends
| Improvement | Typical cost | Saving a year | Rating after |
|---|---|---|---|
| 50 mm internal or external wall insulation | £4,000–£14,000 | £98 | C (73) |
| Floor insulation (suspended floor) | £800–£1,200 | £32 | C (75) |
| Replace single glazed windows with low-E double glazed windows | £3,300–£6,500 | £25 | C (76) |
Costs and savings are the certificate's own, as estimated when it was made. Each rating assumes the improvements above it are done first.
Sale history
Every sale of this home registered with HM Land Registry since 1995
No sale of this home has been registered since 1995.
Homes in SE21 7JS
Ranked by what comparable sales show. Choose one to see its page.
- 18 Boxall RoadSemi-detachedSold Dec 2005 for £1.61m£4,301,000#1
- 9 Boxall RoadTerracedSold Mar 2022 for £1.09m£1,105,000#2
- 17 Boxall RoadTerracedSold Jul 2019 for £875k£957,000#3
- 7 Boxall RoadTerraced · 3 bed · 764 sq ftSold Jun 2025 for £950k£950,000#4
- 15 Boxall RoadTerracedSold Jul 2010 for £500k£947,000#5
- 13 Boxall RoadTerracedSold Aug 2024 for £910k£898,000#6
- 11a Boxall RoadTerracedSold Mar 2013 for £550k£896,000#7
- 13a Boxall RoadTerracedSold Sept 2019 for £820k£877,000#8
- 11 Boxall RoadTerracedSold Sept 2021 for £828k£867,000#9
- 7a Boxall RoadTerracedSold Sept 2019 for £810k£866,000#10
- 29 Boxall RoadSemi-detached · 2 bed · 603 sq ftSold Apr 2026 for £600k£600,000#11
- 9a Boxall RoadTerracedSold Jan 1998 for £80k£496,000#12
- 21b Boxall Road (this home)Flat · 280 sq ft£282,000#13
- 5 Boxall Road–
- 5a Boxall Road–
- 15a Boxall Rd–
- 17a Boxall Road–
- 21 C/d Boxall Road–
- 21a Boxall Road–
- 23 Boxall Road–
- 24 Boxall Road–
- 25 Boxall Road–
- 27 Boxall Road–
- May Cottage 22 Boxall Road–
- Sammi Cottage 20 Boxall Road–
The completed sales behind the figure
Similar homes nearby, registered with HM Land Registry. Choose one to see its page.
| Home | Price | Sold | Size | Per sq ft | Away |
|---|---|---|---|---|---|
| 305D Lordship LaneSE22 8JH · Flat | £330,000 | Jul 2026 | 506 sq ft | £652 | 0.5 mi |
| Flat 17, Dulwich Mead Half Moon LaneSE24 9HS · Flat | £295,000 | May 2026 | 506 sq ft | £583 | 0.5 mi |
| Flat 25, Dulwich Mead Half Moon LaneSE24 9HS · Flat | £268,000 | Feb 2026 | 506 sq ft | £530 | 0.5 mi |
| Flat 2, 321 Lordship LaneSE22 8JH · Flat | £408,840 | May 2026 | 549 sq ft | £745 | 0.5 mi |
| 309A Lordship LaneSE22 8JH · Flat | £450,000 | May 2025 | 452 sq ft | £995 | 0.5 mi |
| Flat 12, Dulwich Mead Half Moon LaneSE24 9HS · Flat | £292,500 | May 2025 | 463 sq ft | £632 | 0.5 mi |
| Flat A, 235 Lordship LaneSE22 8JF · Flat | £575,000 | Nov 2024 | 409 sq ft | £1,406 | 0.5 mi |
| Flat A, 311 Lordship LaneSE22 8JH · Flat | £500,000 | Apr 2026 | 581 sq ft | £860 | 0.5 mi |
| 11, Wesley Court Beckwith RoadSE24 9LJ · Flat | £360,000 | Mar 2025 | 495 sq ft | £727 | 0.4 mi |
| 4, Wesley Court Beckwith RoadSE24 9LJ · Flat | £350,000 | Mar 2025 | 495 sq ft | £707 | 0.4 mi |
| Flat B, 311 Lordship LaneSE22 8JH · Flat | £500,000 | Aug 2025 | 527 sq ft | £948 | 0.5 mi |
| 343A Lordship LaneSE22 8JH · Flat | £580,525 | Nov 2025 | 635 sq ft | £914 | 0.5 mi |
What buyers have paid in SE21
Completed sales in the last 12 months, against the 12 months before
| Type | Sales | Average price | Average size | Per sq ft | On the year |
|---|---|---|---|---|---|
| All homes | 89 | £953,426 | 1,240 sq ft | £729 | +2.8% |
| Flats | 40 | £442,885 | 811 sq ft | £566 | −10.7% |
| Terraced | 24 | £1,102,404 | 1,305 sq ft | £842 | +5.7% |
| Semi-detached | 20 | £1,666,464 | 1,903 sq ft | £903 | −1.5% |
| Detached | 3 | £1,900,000 | – | – | −22.2% |
Find another home
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Contains HM Land Registry data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0.
Energy performance data © Crown copyright. Licensed under the Open Government Licence v3.0.
Floor area and energy rating from the energy certificate of April 2025.
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