What will it cost, and what happens next?
Answers to the questions London homeowners ask before they commission drawings: the fee, the council’s charge, the rules that decide the route, and how long it takes. Every price comes from our published fee table; every rule links to the source.
How much do basement drawings cost in London?A basement is our dearest drawing set at £1,729, because boroughs limit its size and ask for more evidence. Here is the full list of what else it brings.Planning permission
How much do CIL forms cost in London?Get the CIL forms right and on time for £49: Form 1 with the application, Form 2 for who pays, Form 6 before work starts. A late notice carries a 20% surcharge.
How much do location and block plans cost in London?The two plans every planning application needs, from £39. The scale, the red and blue lines and the ownership certificate that decides whether the application is valid.
What do householder planning drawings cost in London?What a London householder planning application costs from first survey to the council’s decision: our £629, the council’s £548, and what is not in either.
How much does a complete drawings package cost in London?One survey and three outputs, from £1,359 to £2,429 depending on the project. Here is what the package replaces, what it saves and what it leaves out.
How much does a Design and Access Statement cost in London?A Design and Access Statement is £219 with us. Whether you need one depends on the type of application and whether the site is in a conservation area or is listed.
What does a heritage statement cost in London?The £539 we charge, what the statement must contain, and why a listed building consent application costs nothing at the council while the planning side still does.
How much does a householder appeal cost if the council refused you in London?Refused? The appeal costs £409 with us and nothing to lodge, but the clock is 12 weeks from the decision letter. Here is what the money buys and what it does not.
How much does a Lawful Development Certificate cost in London?The certificate proves your extension or loft needs no planning permission. Here is the £539 we charge, the council’s £274, and when the fee goes up.
How much does a planning amendment cost in London?Moved a window, changed a roof line, adjusted a wall? The paperwork costs £269 with us and as little as £46 to the council, if the change is small enough.
How much does discharge of planning conditions cost in London?Permission granted, but conditions to clear before you can start? A pack for up to three costs £309 with us. The council fee depends on the scheme, and must be paid with the request.
What does a retrospective planning application cost in London?You built it first and asked later, or the permission had a condition you missed. Here is what it costs to put the application in now, and why you get one go at it.
Building regulations
How much do building regs drawings cost in London?The £629 that buys a technical drawing set for building control, the £479 you pay if we have surveyed already, and who else gets paid before work starts.
How much do SAP and Part L calculations cost in London?Energy calculations for building control, arranged for £225 through an accredited assessor. The fabric limits for extensions, the 25% opening rule and the 2027 changes.
How much do structural calculations cost in London?The £379 that tells the builder which steel to order and tells building control why it will hold. What Part A requires, and when a site visit or ground investigation is needed.
How much does a fire strategy plan cost in London?Alarms, escape windows and escape routes drawn on your plans for an HMO or flat conversion: £399. What the national guidance asks for, and what the plan is not.
How much does a tender package cost in London?The £899 that lets three builders quote the same job on the same page. What the pack contains, who is responsible for what on site, and where it saves money.
How much does regularisation cost in London?Built without building regulations approval? Our £719 draws and documents what exists. Building control charges separately, and may ask to open up the work.
Extensions and lofts
How much do basement drawings cost in London?A basement is our dearest drawing set at £1,729, because boroughs limit its size and ask for more evidence. Here is the full list of what else it brings.
How much do double-storey extension drawings cost in London?Two floors cost more to draw than one. Here is the £849 we charge, the council’s £548, the building regulations set that follows, and the permitted development limits.
How much do garden room drawings cost in London?A garden office, studio or summer house costs £449 to draw. Whether you also pay the council depends on three limits: height, distance from the boundary and use.
How much do loft conversion drawings cost in London?Three loft routes, three council bills: a rooflight loft, a dormer under a certificate, and a full planning application. Our £589 stays the same on all three.
How much do mansard loft drawings cost in London?A mansard rebuilds the roof into a near-vertical slope and a flat top. It costs £719 to draw, £548 to submit, and it is judged on the street as much as the neighbours.
How much do rear extension drawings cost in London?A London rear extension costs £589 to draw and £548 to submit, then building regulations, party wall notices and sometimes a levy. Here is the full order of spending.
How much do side return extension drawings cost in London?A side return fills the alley beside a Victorian terrace. It costs £629 to draw, £548 to submit, and the party wall notices are what many owners forget to budget.
How much do wraparound extension drawings cost in London?A wraparound fills the side passage and pushes out the back as one L-shaped extension. It costs £939 to draw and £548 to submit once, not twice.
How much does prior approval for a larger home extension cost?Our £499 for the drawings and survey, the council’s £249 fee, and the costs that come after: what a 6 m or 8 m rear extension notice really costs in London.
Conversions and licensing
How much do change of use drawings cost in London?A shop, office or house turning into something else costs £759 to draw. What the council charges depends on whether you need a full application, a prior approval or nothing.
How much do flat conversion drawings cost in London?Splitting a house into two flats costs £1,029 to draw and £1,220 in council fees. The flats must also pass a space standard and sound insulation, which shapes the layout.
How much do garage conversion drawings cost in London?Turning a garage into a room costs £539 to draw. Planning is often unnecessary, but building control is not, and a condition on your old permission can change the answer.
How much do HMO conversion drawings cost in London?Turning a house into a shared home costs £759 to draw. The money that follows goes to the council: a planning fee only if an application is needed, and a licence for a large HMO.
How much does an HMO licence pack cost in London?Floor plans with room sizes, the forms and the submission for a house that needs an HMO licence: £449 with a measured visit included. Room-size rules and the five-year limit explained.
Surveys and design
How much do floor plans cost in London?Measured plans of a London house or flat for £225, ready for a sale, a lease, a design brief or a later planning set. What is on them and what the room-size rules count.
How much do new build drawings cost in London?A single new house costs £1,249 to draw and £610 to submit. Biodiversity net gain and the Community Infrastructure Levy apply to a new dwelling when they do not to an extension.
How much does a 3D visualisation cost in London?One still image from one position for £219. Most people order two: the way you will see the scheme and the way the neighbours will. Why a picture helps an application.
How much does a measured building survey cost in London?The £150 that every drawing set starts from, charged once per visit. What we measure, why the boundary line matters and when you can skip it.
How much does interior layout and space planning cost in London?Knock-throughs, new bedrooms, a bigger kitchen: £369 draws the inside of your home before anything is built. The size rules that decide whether a room counts as a bedroom.
Neighbours, reports and checks
How much does a planning constraints report cost in London?Five checks on one address for £19, before you pay for drawings. What each one changes, and why a “not found” in the national data is not the same as a “no”.
How much does a pre-purchase “can I extend?” report cost in London?Before you offer on a house for its extension potential, £179 tells you the likely route and the limits for that address. It is not a design and not a condition survey.