Building regulations drawings · London Borough of Hounslow
Building regulations drawings in Hounslow, £695 fixed
Hounslow building control expects full plans for extensions and alterations, takes chimney breast removals, garage conversions and through lounges by building notice, and lets work start 48 hours after notice. It reaches back to 11 November 1985 for regularisation. We draw the set for the right route.
Householder application fee, paid to your council at submission.
Plus the Planning Portal's own charge if the application goes through the Portal: up to £149 including VAT, depending on the application type, and some types have none (source).
Get this fee in writingor email hello@fixedfeeplans.co.uk
No obligation. Nothing is sent until you ask; your enquiry comes to us and nowhere else.
Fixed fee, in writing
Tell us about your project
Send the postcode and what you want to build, and add photos or old plans if you have them. We reply with the fee in writing and the payment stages set out in full.
What Hounslow Council asks of a building regulations application
From the council's Building regulations approval: when you need approval (adopted current council page, read 25 October 2026).
- Hounslow says full plans are usually used for major projects like new buildings, extensions or alterations to a building, or a change of use, and that you need to submit full plans of the work. (source, checked 25 October 2026)
- Hounslow lists chimney breast removal, recovering of roofs, installing a new bathroom, converting a garage to a room, forming a through lounge and replacing windows as the smaller projects usually done by building notice, and says work can start 48 hours after notice is given. (source, checked 25 October 2026)
- A regularisation certificate can be applied for on any unauthorised works started from 11 November 1985, and the council may visit the site and make tests before certifying that the requirements have been met. (source, checked 25 October 2026)
- Work defined as individual assessment, or in excess of 150,000 pounds, is quoted on request using an individual assessment form rather than from the standard schedule of charges. (source, checked 25 October 2026)
- To build over or near a sewer, Hounslow says to apply for an agreement from Thames Water, and for building on or near former landfill the council publishes a small developments landfill condition guide. (source, checked 25 October 2026)
What Hounslow building regulations application drawings have to show
In Hounslow we choose between the two routes for you. A chimney breast removal or a garage conversion can go as a building notice, which lets work start after 48 hours, but we still draw the structure so the builder and the inspector work from the same sheet. A loft, rear extension or change of use goes in as full plans, with the drawings the council asks for.
The set marks any sewer within reach of the new work, so the Thames Water agreement is asked for before foundations, and flags former landfill on the site plan so the gas protection details are in the first submission. A job over the council's individual assessment threshold goes to Hounslow with the drawings it needs to quote.
Hounslow: 689 householder decisions
What it costs in Hounslow
- Building regulations drawings: £545 drawings + £150 survey (£695 total).
- The building control charge is set by your council or a registered building control approver.
Building regulations drawings across London · Hounslow planning rules · every price
Answers
Hounslow building regulations application questions
Which Hounslow building works can use a building notice?
Can Hounslow regularise building work done years ago?
What do I need in Hounslow if I build over a sewer or on landfill?
Start with £150
Your fixed fee is already on this page.
Tell us the postcode and what you want to build. We confirm the fee in writing and book the survey.