New builds in Isleworth: drawings for a new house
New builds in Isleworth are decided by Hounslow Council, which granted 79% of its 689 householder applications in the latest four quarters (our analysis of MHCLG planning application statistics). DrawingsDirect draws a new house for planning and building regulations from £1,450, so you can test a plot before committing to an application.
Fixed fee from £1,250 drawings + £200 survey (£1,450 total) · all prices
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Homes for sale, or drawings for a home you will build
Searches for new houses in Isleworth bring up sales listings and development sites alike. We do not sell homes. We prepare the planning and building regulations drawings for a house you intend to build, whether that is a plot behind an existing property, a replacement dwelling or a small infill site.
A feasibility sketch with every room dimensioned is a sensible first step to learn what a plot can hold. The London new-build drawings service explains what comes after it.
How Hounslow has treated householder applications
In the four quarters from 2025 Q3 to 2026 Q2 Hounslow made 689 householder decisions, including prior approvals, and granted 79% of them (our analysis of MHCLG planning application statistics, table PS2).
Eight weeks is the statutory period for an application that is not major development, set by article 34 of the Development Management Procedure Order. These are householder cases, which are simpler than a new house, so use them to judge the council's pace, not to predict your outcome.
A one-bedroom, one-person dwelling needs at least 39 m2 of gross internal area, or 37 m2 with a shower room instead of a bathroom.
What appeals say about Hounslow decisions
The Planning Inspectorate decided 346 householder appeals against Hounslow between 2021 and 2026, and 50% were allowed (our analysis of the Planning Inspectorate Casework Database, release 2609). That is a record of past householder cases. It is not a forecast, and an appeal is a slower route that does not suit every refusal.
A drawing set that answers the likely objections at the start usually serves you better than an appeal later. Our planning appeal process guide explains the routes.
Conservation areas and Article 4 directions around TW7
The national register lists 43 conservation-area entries for Hounslow (our analysis of the Planning Data Platform conservation-area dataset, snapshot of 14 August 2026). Check the council's own conservation area map for your address, because a register count says nothing about one street.
For Article 4 directions, our analysis of the Planning Data Platform article-4-direction-area dataset found 2 live register rows near the centre of the TW7 postcode district. The register is incomplete, so treat 2 as a lower bound and ask the council before relying on permitted development. Our Article 4 direction guide covers what a direction removes, and the Planning Data Platform dataset is the public source.
Space standards and fees for an Isleworth house
Check the layout against the nationally described space standard first. A one-bedroom, one-person dwelling needs at least 39 m2 of gross internal area, or 37 m2 with a shower room instead of a bathroom.
The national planning fee for a full application for fewer than 10 houses is £610 for each dwellinghouse, as indexed from 1 April 2026. Our new-build drawings start at £1,450. The pricing page lists the packages, and our house extension drawings for Hounslow show the same service on an existing home.
Sources
Every figure on this page, where it comes from and a link to the original.
| Figure | Source | Link |
|---|---|---|
| 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 |
| 689 | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 79% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 346 | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 50% | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 43 | 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 |
| 2 | Our analysis of MHCLG Planning Data Platform article-4-direction-area dataset (entity API, retrieved 15 Oct 2026) | www.planning.data.gov.uk |
| 37 | Technical housing standards, nationally described space standard (DCLG, March 2015), Table 1: a one-bedroom one-person dwelling needs at least 39 m2 gross internal area, or 37 m2 with a shower room instead of a bathroom (source wording: 39 (37)) | assets.publishing.service.gov.uk |
| £610 | Fees for planning applications in England from 1 April 2026 (MHCLG, SI 2012/2920 as annually indexed), category 1(3)(a): full application for the erection of fewer than 10 dwellinghouses, per dwellinghouse (source wording: "£610 for each dwellinghouse") | assets.publishing.service.gov.uk |
| £1,450 | DrawingsDirect starting fixed fee for new build house feasibility and planning drawings, from the published price list | drawingsdirect.co.uk |