Mansard loft conversion drawings in Upper Norwood, SE19
A mansard loft in Upper Norwood starts with drawings: existing and proposed plans, elevations and sections that show the new roof. Our fixed fee for mansard householder planning drawings starts at £845 with no VAT to add, and the published price list is open to anyone.
Fixed fee from £645 drawings + £200 survey (£845 total) · all prices
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What a mansard loft in SE19 costs to draw
Two published starting fees cover most mansard jobs. Householder planning drawings for a mansard loft conversion start at £845 with no VAT to add. The all-inclusive mansard package, which covers planning, building regulations and structural, starts at £1,845 with no VAT to add.
Both figures come from our pricing page, so what you read here is what the price list says. The council's own application fee is a separate cost.
The council fee sits on top of ours
From 1 April 2026 the national fee for a householder application, the category that covers enlarging or altering a single dwellinghouse, is £548. It is set by the government and paid to the council, not to us.
Keep it apart from the drawing fee when you compare quotes. A quote that bundles the two hides what you are paying for.
The Planning Inspectorate casework database lists 287 householder appeals decided for Croydon between 2021 and 2026. 39% of them were allowed, which means the large majority were dismissed.
Where the 40 cubic metre limit comes in
Under the General Permitted Development Order, roof additions to a terrace house may add up to 40 cubic metres to the roof space. Many Upper Norwood streets are terraced, so that figure is the first number worth knowing before you sketch a mansard.
A mansard replaces much of the existing roof slope, so measure the volume you are proposing against that limit. The drawings are where that volume is set out. If it is not clear whether your house is a terrace for this purpose, ask before you commission anything.
Croydon's householder decisions, in figures
Over the four quarters from 2025 Q3 to 2026 Q2, Croydon decided 786 householder applications, including prior approvals. Across the same quarters, 87% of its householder decisions were grants (our analysis of MHCLG planning application statistics, table PS2).
For householder decisions excluding prior approvals, 95% were made within 8 weeks. The legal decision period for an application that is not major development is 8 weeks beginning with the day after the application is received, so that is the clock these decisions are measured against.
These are borough-wide totals for every kind of householder application. They do not say how a mansard on your street will be treated.
Appeals show where proposals fall short
The Planning Inspectorate casework database lists 287 householder appeals decided for Croydon between 2021 and 2026. 39% of them were allowed, which means the large majority were dismissed.
A refused loft is not always final, but it is slow and costly. Getting the drawings right first time is the cheaper route.
Check conservation areas and Article 4 before you draw
Our analysis of the national Planning Data Platform finds 20 live conservation-area entries for Croydon. Separately, 6 live Article 4 direction rows intersect a small area around the SE19 postcode centre. The register is incomplete, so 6 is a lower bound and not proof about your street.
An Article 4 direction can remove rights that houses otherwise have, and a conservation area changes how a roof alteration is judged. Look up your address on the council's own planning map before settling on a mansard.
If you are weighing the mansard against a dormer, our mansard loft conversion drawings overview sets out the service, and the dormer pages cover the alternative.
Sources
Every figure on this page, where it comes from and a link to the original.
| Figure | Source | Link |
|---|---|---|
| £845 | DrawingsDirect starting fixed fee for mansard loft conversion householder planning drawings, with no VAT to add, from the published price list | drawingsdirect.co.uk |
| £1,845 | DrawingsDirect starting fixed fee for an all-inclusive mansard package (planning, building regulations and structural), with no VAT to add, from the published price list | drawingsdirect.co.uk |
| £548 | Fees for planning applications in England from 1 April 2026 (MHCLG, SI 2012/2920 as annually indexed), category 6(1): householder application for the enlargement, improvement or alteration of a single dwellinghouse (source wording: £548) | assets.publishing.service.gov.uk |
| 40 cubic metres | GPDO 2015 Sch 2 Pt 1 Class B.1(d)(i): roof additions may add up to 40 cubic metres to the roof space of a terrace house (source wording: "40 cubic metres in the case of a terrace house") | www.legislation.gov.uk |
| 786 | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 87% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 95% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 287 | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 39% | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 20 | Our analysis of MHCLG Planning Data Platform conservation-area and article-4-direction datasets (bulk snapshot retrieved 14 Aug 2026) | www.planning.data.gov.uk |
| 6 | Our analysis of MHCLG Planning Data Platform article-4-direction-area dataset (entity API, retrieved 15 Oct 2026) | www.planning.data.gov.uk |
| 8 weeks | DMPO 2015 art 34(2)(b): decision period for an application that is not major development (source wording: "8 weeks beginning with the day immediately following that on which the application is received") | www.legislation.gov.uk |
Photographs: David Hawgood (CC BY-SA 2.0).
