Loft conversions in Hillingdon begin with floor plans
A loft conversion in Hillingdon is designed over the floors beneath it, so the first drawing is a measured floor plan of the house. DrawingsDirect draws those plans to scale, for homes in Uxbridge and across the borough, for a fixed fee starting at £275, then carries them into your loft drawings.
Fixed fee from £275 · all prices
Prefer to talk it through?
Why a loft needs the floors below drawn first
The stairs to a new loft room have to land somewhere. The landing, the walls under the new floor and the room beneath all limit the choice. A drawing that gets these wrong means a redesign after the builder has seen it.
So we measure each storey and draw it to scale before any loft design starts. Our loft conversion drawings service then adds the proposed rooms, and if the loft has a dormer, our dormer loft conversion drawings cover that design.
Permitted development or a full application?
Some loft conversions can go ahead as permitted development, proved by a lawful development certificate. Our analysis of MHCLG planning application statistics, table PS1, shows Hillingdon decided 1,136 of those certificates over the eight quarters from 2024 Q3 to 2026 Q2.
Where a scheme needs full householder permission, our analysis of the same release, table PS2, shows 1,147 decisions in Hillingdon over the four quarters to 2026 Q2, prior approvals included, with 90% granted. Both are history, so treat them as context. Our guide on planning permission for a loft conversion explains which route fits.
Fewer than half of Hillingdon's recent householder appeals succeeded: 43% of 415 decided between 2021 and 2026 were allowed, in our analysis of the Planning Inspectorate Casework Database (released 1 October 2026).
Floor planning in Uxbridge and the rest of the borough
Owners in Uxbridge, Ruislip, Hayes and the other Hillingdon towns get the same service and the same fee. The published starting fixed fee for scaled floor plans for sale, letting or lease is £275; larger houses are on the pricing page.
For a UB7 address, our West Drayton floor plans page covers that postcode district.
Hillingdon conservation areas and loft design
Hillingdon has 42 live conservation-area entries on the national register; that is our analysis of the MHCLG Planning Data Platform conservation-area dataset (snapshot retrieved 14 August 2026). A loft with a front roof light or a dormer can change how the street looks, so look up your address on Hillingdon Council's conservation area map before you commit to a design.
Appeals: the Hillingdon record
Fewer than half of Hillingdon's recent householder appeals succeeded: 43% of 415 decided between 2021 and 2026 were allowed, in our analysis of the Planning Inspectorate Casework Database (released 1 October 2026). The making an application guidance describes the plans a council expects to see, which is the standard an inspector would also look for.
Sources
Every figure on this page, where it comes from and a link to the original.
| Figure | Source | Link |
|---|---|---|
| £275 | DrawingsDirect starting fixed fee for scaled floor plans for sale, letting or lease, from the published price list | drawingsdirect.co.uk |
| 1,136 | Our analysis of MHCLG planning application statistics, table PS1 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 1,147 | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 90% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 42 | 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 |
| 415 | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 43% | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
Questions people ask
Do you draw loft conversions in Hillingdon?
Do you do floor planning in Uxbridge?
Does a loft conversion always need planning permission?
Photographs: Lewis Clarke (CC BY-SA 2.0).
