Guides
What London homeowners ask us before they commission drawings: which sheets the council wants, how long each step takes, and when building regulations come in. Written by Ben Shaukat, Managing Director, with the sources linked.
LoftsHow much do loft conversion drawings cost in London?From £625What the drawings cost, which bills sit beside them, and why many London lofts need no planning application at all.Planning
PlanningHow much do Lawful Development Certificate drawings cost in London?From £575A certificate has its own council fee, a fixed fee from us, and a catch: it proves only what the drawings show.
PlanningHow much does prior approval for a larger extension cost in London?From £525Reaching 6 or 8 metres without a full planning application costs two modest bills, and a neighbour’s letter can change the outcome.
PlanningHow much does change of use planning cost in London?From £815Turning a shop, office or mews garage into a home is priced per home by the council, and the route depends on what the building is now.
PlanningHow much does a householder planning appeal cost in London?From £425The appeal itself is free to lodge. What costs money is the case you put in, and the 12-week clock that starts at refusal.
PlanningHow much does a heritage statement cost in London?From £565The statement is a fixed fee from us, and listed building consent itself has no council fee, but the statement has to be as deep as the building’s importance.
PlanningHow much does discharging planning conditions cost in London?From £325Permission is not the end: the conditions on it can stop a start on site, and each request to clear them has its own council fee.
PlanningHow much does a planning amendment cost in London?From £285Changing a permission after it is granted is cheap if the change is small and dearer if the council calls it material.
PlanningHow much do planning permission drawings cost in London?From £665One fixed fee covers the survey and the drawings. The council’s fee is separate, and the drawings decide whether the application is accepted in the first place.
PlanningHow much do location and block plans cost in London?From £39The smallest fee on our list buys the two drawings that decide whether an application is valid at all.
PlanningHow much does a design and access statement cost in London?From £235Many homeowners never need one, and the ones who do need it for a reason you can check in a minute.
PlanningHow much does a planning constraints report cost in London?From £19A small fee to find out, before you spend on drawings, whether anything on your street changes the rules.
PlanningHow much does a pre-purchase “can I extend?” report cost in London?From £185The most expensive mistake in a house purchase is paying for room to grow that the law already took away.
PlanningHow much do Community Infrastructure Levy forms cost in London?From £49The forms are cheap. The levy is only charged on some projects, and a missed form can cost a surcharge on the ones it does hit.
PlanningHow much does a flood risk assessment cost in London?From £375It is a condition of validity in some places, an optional extra in others, and the first thing to settle is which kind your address is.
PlanningHow much does a tree survey cost in London?From £445A tree survey is a small fee that can decide where a house is allowed to go.
PlanningHow much does retrospective planning permission cost?From £625Two bills, one from the council and one for the drawings, and what decides whether you pay them twice.
PlanningWhat drawings do you need for planning permission?A plain checklist of the sheets a London householder application usually carries, and what each one has to show.
PlanningHow long do planning drawings take? Survey to submission, step by stepPlanning Drawings produces the set about 7 days after the survey; the rest of the timeline depends on the house, your decisions and the council.
Building regulations
Building regulationsHow much do structural calculations cost in London?From £389A fixed fee for the numbers that size every beam, post and foundation, and the reason building control will not pass the drawings without them.
Building regulationsHow much does regularisation cost in London?From £765Fixing building work done without approval: drawings from us, a charge from the council, and sometimes opening up the work to prove it.
Building regulationsHow much do building regulations drawings cost in London?From £665A second set of drawings for a different audience: the building control body, who asks whether it can be built safely, not whether it is allowed.- Building regulationsHow much does a complete planning and building regulations package cost in London?From £1,385Planning drawings, building regulations drawings and structural calculations for one project, from one survey, at one fixed fee.
Building regulationsHow much do SAP calculations cost in London?From £225SAP is the energy sums for a home. For most extensions the rules are simpler than people fear.
Building regulationsHow much does a fire strategy plan cost in London?From £425One drawing that shows where people go if there is a fire, and the walls and doors that keep that route safe.
Building regulationsHow much does a construction and tender drawing package cost in London?From £945The set that lets several builders price the same job, so the quotes can be compared like for like.
Building regulationsPlanning drawings vs building regulations drawings: what each one is forTwo sets of drawings, two different approvals, and one wall that has to satisfy both.
Extensions and lofts
Extensions and loftsHow much do rear extension drawings cost in London?From £625The drawing fee is the small bill. The length of your extension decides which council route, and so which other bills, you meet.
Extensions and loftsHow much do double-storey extension drawings cost in London?From £905Two floors on the back of a house cost more to draw and almost always meet a planning officer, so here is the whole bill.
Extensions and loftsHow much do side return extension plans cost in London?From £665A narrow strip beside the back room, a neighbour’s window across the fence, and the plans that settle both.
Extensions and loftsHow much does a mansard loft conversion drawing cost in London?From £765A mansard rebuilds the roof, so it is a planning job with a council fee, a heritage test and a stricter fire route.
Extensions and loftsHow much do basement conversion drawings cost in London?From £1,855Digging down is the most expensive drawing job we do, and the law treats it differently from building up or out.
Extensions and loftsHow much do wraparound extension drawings cost in London?From £1,005A side return and a rear extension in one, which makes it two sets of limits applied to one building.
Extensions and loftsHow much do garden room drawings cost in London?From £475A small building at the end of the garden has two sets of size rules: one for planning and a different one for building regulations.
Conversions
ConversionsHow much do garage conversion drawings cost in London?From £575Often a modest-cost way to add a room, because the planning bill can be nil, once you have checked three things.
ConversionsHow much do HMO conversion drawings cost in London?From £815Whether a shared house needs planning permission depends on your borough, and the licence has its own room-size rules.
ConversionsHow much does it cost to convert a house into two flats in London?From £1,095Drawings are a small part of the cost, but they decide whether each flat is big enough, safe to escape from and approvable.
ConversionsHow much does an HMO licence application pack cost in London?From £475The council’s licence fee is its own. Our pack puts the drawings and evidence in front of the licensing team in the form it asks for.
Surveys and design
Surveys and designHow much do new build house drawings cost in London?From £1,335A new home is the biggest drawing job we do for a household, and it carries costs that an extension never meets.
Surveys and designHow much does a measured building survey cost in London?From £150Every drawing we make starts here, and the same fixed fee applies whether or not you buy drawings from us.
Surveys and designHow much do floor plans cost in London?From £225Floor plans for a sale, a lease or a licence: priced on their own, drawn to the same standard as our planning sets.- Surveys and designHow much does a feasibility study cost in London?From £545Two or three options for your house, before you commit to drawings for one of them.
Surveys and designHow much does 3D visualisation cost in London?From £235A picture of the finished extension, before it is built, that you and your neighbours can read.- Surveys and designHow much does interior layout and space planning cost in London?From £385Where the walls, doors and stairs go inside the house, tested against the numbers that building control and councils use.
Surveys and designHow much does CAD conversion of existing drawings cost in London?From £189Turn old paper plans or a PDF into clean, scaled CAD sheets that a council or builder can use.
Surveys and designDo you need a measured survey before an extension?No law says you must commission one, but accurate drawings need accurate measurements, and a survey is the safest way to get them.
Neighbours and checks
Neighbours and checksHow much does a party wall notice cost in London?From £42The notice is a small fixed fee per neighbour. What it sets going is the part that can cost more.
Neighbours and checksHow much does an independent drawing review cost in London?From £289A second pair of eyes on drawings and specification you already have, before you submit or build.