Loft conversion drawings in Croydon from £625
Velux, rear dormer or hip-to-gable, drawn to Croydon Council’s validation list and submitted for you. We say at the start whether your road has lost its loft rights.
£625 £475 drawings + £150 survey (£625 total), no VAT to add
Prefer WhatsApp? Send us a message · +44 7592 201353
The short answer
A Croydon loft conversion is drawn as a Lawful Development Certificate where permitted development still applies, and as a householder application where it does not. Our fee is £475 drawings + £150 survey (£625 total), no VAT to add. Croydon Council does not charge CIL on home extensions, and its application fee, if one is due, is separate.
Loft conversion drawings
from £625
- Drawings
- £475
- Measured survey
- £150
- Total you pay
- £625
- VAT
- None to add
- A measured survey of the roof, the ridge and the stair that must reach the new room
- A check of your address against Croydon’s conservation areas and Article 4 directions before we draw
- Plans, elevations and a section through the stair, labelled the way Croydon’s list asks
- The roof-volume calculation that decides between a certificate and planning permission
- Submission to Croydon for you, with the forms
- An independent check of every sheet, and free redraws of our drawings until approval
£475 drawings + £150 survey (£625 total). A starting fee: we confirm one fixed figure after checking your address. The council’s own fee, where there is one, is paid to the council.
Get my fixed feeHow a Croydon loft job runs
Address check
We look your road up against Croydon’s 21 conservation areas and its Article 4 directions, because a lost right changes the route.
Survey
One visit measures the roof, the eaves and ridge heights, and the landing where the new stair arrives.
Draw to Croydon’s list
Long and short sections, a block plan at 1:200 or 1:500, and a flood statement, all set out as the May 2026 validation list wants.
Submit and answer questions
We send the application and answer the case officer, redrawing for free if the council asks for changes.
Does a loft in Croydon need planning permission?
In most of the borough, no. A roof extension on a house falls under Class B of the permitted development order, up to 40 cubic metres on a terrace and 50 on any other house. What decides it in Croydon is the street rather than the loft, because the borough has places where the right has been taken away.
For example, the Article 4 direction on Chatsworth Road Conservation Area, in force since 21 January 2016, removes the permitted development right for extensions and for all roof alterations. A loft conversion there needs planning permission however small it is. We check this for your address before we draw anything, so you do not pay for a certificate application that was never going to work.
What Croydon asks for with a loft application
Croydon publishes a local validation list, and the May 2026 edition asks for things a loft job does not always expect. Every application needs a flood risk statement, even a long way from a river; for a householder job it can be short, with a look at the online flood maps and a sensible measure such as a water butt. Photographs go in a separate document marked confidential, and they must not show children, number plates or views through a neighbour’s window.
Drawings need a long section and a short section for an extension, a block plan at 1:200 or 1:500, and no “do not scale” notes. A heritage statement is required if the house is in a conservation area or a local area of special character. We build these into the set, so the case officer does not send it back as invalid.
Timing and the council’s side of the cost
Croydon says it writes within 5 working days if something is missing, and it aims to decide 8, 13 or 16 weeks after validation depending on the type of application. A certificate or householder loft sits at the short end. These are the council’s aims, and we cannot promise a decision date.
On CIL, Croydon’s own page says the levy “is not charged on extensions or other home adaptations”. That keeps a loft conversion out of it, unless the work creates a separate dwelling, which is a different project.
Loft conversions in Croydon in numbers
502 of 527
Householder decisions by Croydon Council between July 2025 and June 2026 (prior approvals left out) that were made inside 8 weeks.
Source: MHCLG live table PS2, district planning application statistics, July 2025 to June 2026 (GOV.UK)
21
Conservation areas in Croydon, where the loft right is limited and a heritage statement may be needed.
21 Jan 2016
Date the Chatsworth Road direction removed the right to alter the roof without planning permission.
Source: Chatsworth Road Conservation Area Article 4 direction (Croydon Council)
1:200 or 1:500
Scale Croydon accepts for a block plan, with long and short sections for any extension.
Source: Croydon local validation list, May 2026 (Croydon Council)
8, 13 or 16 weeks
The decision period Croydon aims for after it validates an application, depending on type.
Source: After submitting a planning application (Croydon Council)
Not charged
Croydon’s statement that CIL does not apply to extensions or other home adaptations.
Source: Community Infrastructure Levy (CIL) and Section 106 (Croydon Council)
£30.30
Mayoral CIL per square metre for permissions granted in 2026 in Croydon, which is in band 3 (£25 when set in 2019). It applies only where CIL is due at all.
Source: Mayoral CIL: Annual CIL Rate Summary 2026 (London.gov.uk)
40 m³ / 50 m³
The roof-space limit for a terraced house and for any other house under Class B.
Source: GPDO 2015, Schedule 2, Part 1, Class B: roof additions (legislation.gov.uk)
100 m²
New-build floor area below which CIL does not arise unless the work creates a dwelling.
Source: CIL Regulations 2010, regulation 42: exemption for minor development (legislation.gov.uk)
Questions about loft conversions in Croydon
Why does Croydon want a flood statement for a loft?
Because its validation list asks for one with every application, wherever the house stands. For a loft it is short, and it is part of the pack we prepare.
Is my road in an Article 4 area?
Send us the address. We check it against Croydon’s conservation areas and directions before we quote the route, and we tell you plainly if the right has gone.
Do I pay CIL on a Croydon loft?
Croydon states that CIL is not charged on extensions or other home adaptations. Mayoral CIL, where it applies at all, follows the same liability rules.
Check your Croydon road before you plan the loft
Send the address and a photo of the back of the house. We reply with the route and a fixed fee, from £475 drawings + £150 survey (£625 total).