Planning Drawings for London Homes

Planning drawings are not construction drawings. Their job is to explain the proposal for assessment: what exists, what changes, how large the works are, how they look from outside and how they sit on the site. A typical package includes existing and proposed floor plans, elevations, sections, roof plans where relevant, a site location plan and a block or site plan. For some applications, additional streetscene, context or detail drawings are needed so the case officer can understand scale, massing and impact.

The existing and proposed drawings have to line up precisely. If window positions, levels, roof forms or boundaries shift between sheets, an application can be delayed, queried or misunderstood. We start from a measured survey or reliable existing information, then prepare drawings at appropriate scales so the change is legible. This is especially important on period houses and flats where small level changes, roof slopes and neighbouring relationships carry planning significance.

Different routes call for different levels of drawing. A lawful development certificate needs drawings that demonstrate compliance with permitted development rules; a householder application needs enough information to assess design and neighbour impact; listed building consent may require internal elevations, details and method information; a full application for a flat or new dwelling will usually need more context and supporting documents. We tailor the drawing package to the route rather than issuing a generic set.

Many planning delays start before assessment because the submission is made invalid. Drawings need to match the application form, ownership boundary, red-line plan, description of development and supporting statements. Where a design and access statement, heritage statement, planning statement or specialist report is included, the drawings must say the same thing. We coordinate the drawing package so the authority can assess it; clients who also need route advice, forms, submission and case-officer liaison can appoint our separate planning application service.

A grant of planning permission does not mean a builder can start from the planning set. Planning drawings are intentionally focused on assessment; building regulations and construction drawings add structure, fire safety, insulation, ventilation, drainage and details. We make that distinction clear at the outset. Where you want to build, the planning package should lead naturally into building regulations drawings, a schedule of works and, where needed, tender information.

Fixed-price 'drawing factory' services win attention by advertising a single low figure, but a headline price set before anyone has seen the property tends to move once real constraints appear, or it buys a thin set the council later queries. We price the other way round. A short £395 route review — credited in full against the work if you proceed — confirms the property, the constraints and the correct application route, and from that we issue a fixed fee for the full drawings package before you commit to it. You see the scope and the number together, so there is no open-ended hourly drift and no surprise on submission. Rather than matching an average price for a bare set of drawings, our fee reflects your actual scheme and buys drawings prepared with the design and planning judgement an assessable application needs. The current fixed-fee options, and exactly what each covers, are set out on our /packages/ page.

How long a planning drawing package takes depends on the property, not a production-line promise. The sequence is consistent even when the timescale is not: we secure reliable base information first — usually a measured survey, or verified existing drawings — because everything proposed is built on it; then we prepare the existing and proposed drawings; then we work through the agreed revision rounds until the set is right. The variables that move the timeline are practical ones: how quickly a survey can be booked and access arranged, how complex the property and roof geometry are, whether specialist input or supporting statements are needed, and how many options you want to explore. We give you a realistic timetable at the route-review stage rather than a headline figure we cannot stand behind. It is worth remembering that the drawings are only the start of the clock: once a valid householder application is submitted, the council's own determination period is usually around eight weeks, so getting the drawings right first avoids losing that time to validation queries.

A planning drawings package is a defined set, and knowing its edges matters as much as its contents. Inside it you should expect existing and proposed floor plans, existing and proposed elevations and sections, a roof plan where the design affects the roof, and the site location and block plans a council needs to place the proposal in its setting — all coordinated so the existing and proposed sheets tell one story. What sits outside the package is where unclear quotes cause friction later. Planning drawings are not construction or building regulations drawings, so structural calculations, technical build-up details and the building control submission are separate stages. Third-party costs are excluded by their nature too: the council's own application fee is paid directly to the local authority, and measured surveys, structural engineering, party wall matters and any specialist reports — heritage, daylight, drainage — are additional where a scheme needs them. We set these boundaries out in writing before you commit, so the fixed fee is genuinely fixed and you can see exactly which later stages, if any, your project will reach.

Homeowners often buy “drawings” once and expect them to do three jobs. Planning drawings answer a public-law question: is this design acceptable in principle against policy, design and neighbour amenity? They show massing, openings, materials intent and how the proposal sits on the plot — enough for a case officer and neighbours to understand the change. They are deliberately not a construction set. Building regulations drawings answer a different question: how will this be built safely and in compliance with Approved Documents? They carry structure, fire, insulation, drainage, ventilation and construction notes a contractor and building control actually use.

Submitting planning sheets to a builder for pricing, or building-control detail to a planning officer, creates cost and validation problems. We keep the stages sequenced and honest: get the principle approved (or confirmed lawful), then invest in technical detail. Where both stages are needed, one measured survey feeds both so the existing building is not re-surveyed twice.

Validation failures are usually technical: missing red line, inconsistent floor levels between plan and section, proposed elevations that do not match the proposed plan, or a roof plan that contradicts the dormer volume. Refusal risks are usually design-led: overbearing depth on a short garden, flank windows that overlook, a roof form that reads as an extra storey on a sensitive street, or materials that ignore conservation character. Good planning drawings prevent both classes of problem by coordinating every sheet and by designing the envelope against neighbour tests and local character before the package is submitted.

We also flag when drawings alone are not enough — when a heritage statement, tree report or daylight note is on the borough list. A complete planning submission is drawings plus the evidence the local validation list actually requires for that address and application type.

Every sheet in a planning package carries a title, a number and a revision letter, and the application form lists them. That list is not housekeeping. When permission is granted, the decision notice normally approves the development by reference to those numbered drawings, and a condition ties the works to the approved set. If a case officer asks for a change during assessment, a window repositioned or a ridge dropped, the amended sheet is reissued under a new revision and the council's file updated, and where the change is more than cosmetic neighbours may be re-consulted. Disciplined numbering from the first issue is what keeps the case officer, the neighbours, your builder and building control all looking at the same version.

The same discipline matters after consent. Building what was approved means the construction set has to stay faithful to the approved sheets, so where the design moves during technical design or on site, a rooflight repositioned, a material substituted, the difference is regularised rather than quietly built: a non-material amendment for something minor, an application to vary the approved plans where it changes what was assessed, or a fresh application if the scheme has moved further. Permissions also carry conditions requiring details to be approved before work starts, a separate submission we handle as discharge of planning conditions. We issue a drawing register with the package so you know which revision holds the permission.