Rear extension drawings for Redbridge homes, £589
Redbridge’s Housing Design guide gives maximum depths: 3.5 m for terraced and semi-detached houses and 4.5 m for detached. It will not support creep beyond your neighbours. We draw to those figures.
- £439 drawings + £150 survey (£589 total)
- Council depth guide followed
- Article 4 estates checked
What do rear extension drawings cost in Redbridge?
We charge £589: £439 for the drawings, forms and submission and £150 for the survey visit, with no VAT to add. Redbridge Council’s application fee is paid to the council.
What the Redbridge price covers
- A survey of the rear wall, any earlier extensions on your row, and the garden
- Plans and elevations showing depth, eaves and ridge height against the council’s guide
- A 45 degree check against the nearest neighbouring window where a first floor is involved
- A check of your road against the Article 4 estates
- Submission to Redbridge and replies to the case officer
| Our drawings and submission paid to us | £439 |
|---|---|
| Measured survey paid to us | £150 |
| Council householder fee paid to the council | £548 |
| Total | £1,137 |
We charge £589 in total. The £548 is paid to the council when the application goes in, and the survey is charged once if you later order building regulations drawings for the same house.
Redbridge’s depth and height guide
The Housing Design SPD gives maximum depths for single-storey rear extensions as a general rule of thumb: 3.5 m for a terraced house including an end terrace, 3.5 m for a semi-detached house and 4.5 m for a detached one. Greater depths are acceptable only where consistent with adjoining properties, and “creep” beyond the neighbours would generally not be supported (Redbridge SPD).
Flat-roof extensions should generally be 3 m high, with any parapet kept to 150 mm. Pitched roofs should not exceed 3 m at the eaves or 4 m overall. For example, a 3.5 m flat-roofed kitchen at the back of an Ilford semi fits the guide, while a 4.2 m pitched one would need a case made for it.
Estates, conservation areas and Class A
Redbridge has 16 conservation areas (Redbridge conservation areas). Its page links Article 4 directions for the Bungalow Estate (2017) and the Aldersbrook and Lake House Estate (2020), and the council encourages a duty planner chat or a lawful development certificate for properties with special conditions (Redbridge permitted development).
Elsewhere Class A can apply, though the SPD still judges planning applications against its own depths. Redbridge decided 680 of 706 householder applications inside 8 weeks in the year to June 2026. Its guide is a local list of design tests rather than a validation checklist, so we also draw the standard scaled plans a case officer needs to register the application.
Redbridge rear extensions in numbers
- 3.5 m / 4.5 m
- Maximum single-storey rear depths in the SPD: terraced and semi-detached 3.5 m, detached 4.5 m. Redbridge: Housing Design SPD, adopted September 2019
- 3 m / 4 m
- Eaves and overall height the SPD gives for pitched single-storey rear extensions. Redbridge: Housing Design SPD, adopted September 2019
- 150 mm
- Maximum parapet height the SPD gives on flat-roof rear extensions. Redbridge: Housing Design SPD, adopted September 2019
- Sept 2019
- Adoption date of the Housing Design SPD. Redbridge: Housing Design SPD, adopted September 2019
- 16
- Conservation areas in Redbridge. Redbridge: protected buildings and conservation areas
- 2
- Estates with Article 4 directions linked on Redbridge’s page: Bungalow Estate and Aldersbrook and Lake House. Redbridge: protected buildings and conservation areas
- 680 of 706
- Redbridge Council householder applications decided within 8 weeks in the year to June 2026, out of all it decided (prior approvals not counted). MHCLG live table PS2, planning application statistics by district, July 2025 to June 2026 (GOV.UK)
- £72.73 per m²
- The Mayor of London’s CIL in Redbridge (band 2) for permissions granted in 2026, owed only when a scheme is liable for CIL in the first place. Mayoral CIL: annual rate summary for 2026, Table 1 (Greater London Authority)
Redbridge rear extension questions
How deep will Redbridge allow a rear extension?
Its guide gives 3.5 m for terraced and semi-detached houses and 4.5 m for detached, and no creep beyond neighbours.
How high can the roof be?
Flat roofs about 3 m; pitched roofs up to 3 m at the eaves and 4 m overall.
Which Redbridge estates have Article 4 directions?
The Bungalow Estate and the Aldersbrook and Lake House Estate are linked on the council’s page.
How fast does Redbridge decide?
It decided 680 of 706 householder cases within 8 weeks last year. We cannot promise a date.
Other services people book with this one
- Prior approval for a larger home extension£349 drawings + £150 survey (£499 total)
- Lawful Development Certificate drawings£389 drawings + £150 survey (£539 total)
- Building regulations drawings£479 drawings + £150 survey (£629 total)
- Side return extension drawings£479 drawings + £150 survey (£629 total)
- Party wall notice£39
Price your Redbridge extension
Send the address and a sketch. We check the guide and reply with a fixed price.