Floor plans for extensions in Merton Park and Merton
An extension in Merton Park needs two sets of floor plans: the house as it stands and the house with the new space added. DrawingsDirect's MCIAT chartered architectural technologists draw both from a measured survey for Merton council, with our fixed fee starting at £275.
Fixed fee from £275 · all prices
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How floor plans shape an extension application
The existing plans show the walls you will open up or build against. The proposed plans show the new footprint, the openings and how the extension joins the rest of the house.
Rear extensions, side returns and lofts all start the same way. Our rear extension drawings service builds on these plans, and our rear extension cost guide helps you budget the whole project.
How quickly Merton decides householder cases
Our analysis of MHCLG planning application statistics, table PS2 (released 24 Sep 2026), shows Merton made 759 householder decisions, including prior approvals, over the four quarters from 2025 Q3 to 2026 Q2.
In that period, 75% of householder decisions, excluding prior approvals, were made within 8 weeks. Allow time for the decision, and submit a complete set the first time. Our guide to planning timelines shows what follows submission.
Our analysis of MHCLG planning application statistics, table PS2 (released 24 Sep 2026), shows Merton made 759 householder decisions, including prior approvals, over the four quarters from 2025 Q3 to 2026 Q2.
Is your Merton Park street in a conservation area?
Our analysis of the MHCLG Planning Data Platform conservation-area dataset (snapshot retrieved 14 Aug 2026) puts 28 Merton conservation-area entries on the national register. The count is for the whole borough, so check Merton Council's conservation area map to see whether your Merton Park street is designated.
Inside one, the council weighs how the extension looks from outside, so check the map before you commit to a design.
What each sheet must show
National planning practice guidance says plans must be drawn to an identified scale and show the direction of north. For the location plan it points to a typical scale of 1:1250. Our sheets follow both.
Book the survey
Start with a measured building survey in Merton. The pricing page covers every later stage. Read the floor plans service for scope.
Sources
Every figure on this page, where it comes from and a link to the original.
| Figure | Source | Link |
|---|---|---|
| 759 | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 75% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 28 | 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 |
| identified scale | Planning practice guidance, Making an application, paragraph 023 (ID 14-023-20140306): any plans or drawings must be drawn to an identified scale and plans must show the direction of north | www.gov.uk |
| 1:1250 | Planning practice guidance, Making an application, paragraph 024 (ID 14-024-20140306): location plan scale should typically be 1:1250 or 1:2500 | www.gov.uk |
| £275 | DrawingsDirect starting fixed fee for floor plans, from the published price list | drawingsdirect.co.uk |
Questions people ask
Do I need floor plans for a rear extension in Merton Park?
Can the same plans be used for building regulations?
Photographs: David Anstiss (CC BY-SA 2.0).
