Free 2026 London Planning Report — London planning costs

What does it cost in London?

Straight answers to the questions homeowners ask before a drawing job starts: the council fee, our fixed fee, how long it takes and what you get. Every figure links to its source.

Building Regulations Drawings

Rear wall of a house extension with new patio doors, blockwork up to the roof line and a scaffold tower still standing beside it

From £745How much do building regulations drawings cost in London?Our fixed fee is £745, survey visit included and no VAT charged. Building control's own charge and the structural engineer's calculations sit on top, and this post prices each one.

Change of Use Drawings

London high street lined with Victorian shopfront parades and flats above, the kind of building where uses change over time

From £895How much do change of use drawings cost in London?Change of use drawings start at £895 with the survey included, and the council's fee is £610 for most changes. The type of change decides everything else.

Double Storey Extension Drawings

Semi-detached house with a two-storey rear extension in blockwork, a scaffold tower and stacked bricks in the garden before the render goes on

From £995How much do double storey extension plans cost in London?Our fixed fee is £995 with the survey included, plus the council's £548 application fee. Two storeys leave very little room for permitted development, and this post shows where the limits fall.

Flat Conversion Drawings

Red-brick mansion blocks meeting on a Kensington street corner, a London building type already divided into flats

From £1,195How much do flat conversion drawings cost in London?Turning a house into two flats costs our fixed £1,195 for drawings, with the survey included, and £610 to the council. Soundproofing, fire escape and room sizes are where the real cost sits.

HMO Licence Plans

London high street lined with Victorian shopfront parades and flats above, the sort of building often let as separate rooms

From £495How much do HMO licence floor plans cost in London?Our fixed fee is £495 for scaled floor plans and a room-size schedule, ready to upload. The council's licence fee is separate, and a missing licence carries a penalty of up to £40,000.

New Build Drawings

Edwardian gabled houses on a residential street in spring, the setting a new infill home would have to sit within

From £1,450How much do new build drawings cost in London?New build drawings start at £1,450 with the site survey included, and the council charges £610 for each home. Biodiversity, building regulations and structure follow, and each has its own cost.

Party Wall Notices & Drawings

Three-storey stock brick Victorian villas with bay windows, sharing party walls that run between each pair

From £45How much do party wall notices cost in London?Our notice fee is £45 per adjoining owner. A neighbour who disagrees brings surveyors into it, and their fees are a different cost that this post explains.

Rear Extension Drawings

Rendered single-storey rear extension with French doors and a small first-floor addition on the back of a semi-detached London house

From £695How much do rear extension drawings cost in London?Our fixed fee is £695 with the survey included. The council's £548 application fee is separate, and the depth you want decides whether you pay it at all.

Structural Drawings

Semi-detached house with a two-storey rear extension in blockwork under scaffold, before the opening and the roof are finished

From £395How much do structural calculations cost in London?Our structural drawings and calculations start at £395, fixed per project. Building control's fee and the builder's steel are separate costs, and this post prices each one.

Daylight and Sunlight Reports

Red-brick mansion blocks meeting on a Kensington street corner, where windows face each other across narrow gaps

From £895How much does a daylight and sunlight report cost in London?Our fixed fee is £895, with the report prepared by a specialist we coordinate. It measures the effect on neighbours' windows and gardens against the published BRE guide.

Design and Access Statements

Flat-fronted stock brick terrace with brightly painted front doors, the street context a design and access statement describes

From £245How much does a design and access statement cost in London?Our fixed fee is £245. Many householder applications do not need one by law, so the first thing we do is check whether yours does.

Feasibility Studies

Edwardian gabled houses on a residential street in spring, the kind of house a feasibility study tests before any drawings are paid for

From £495How much does a feasibility study cost in London?Our fixed fee is £495. For that we check your address, test your ideas against the rules, sketch options and tell you which route costs least in time and money.

Heritage Statements

Pastel stucco terrace with a mansard roof storey, the kind of historic frontage a heritage statement describes

From £595How much does a heritage statement cost in London?Our fixed fee for a heritage statement is £595, with no VAT charged. The policy asks for enough detail to understand the effect on significance, and no more.

Householder Planning Appeals

Victorian terrace street with bay windows, the kind of street where a rear or side extension is refused over a neighbour's outlook

From £449How much does a householder planning appeal cost in London?Our fixed fee is £449 to prepare and submit a householder appeal. The deadline is 12 weeks, and the Inspectorate's own figures show how long a decision takes.

Lawful Development Certificate Drawings

Row of Edwardian gabled houses on a residential street in spring, the sort of house that often qualifies for permitted development

From £645How much does a lawful development certificate cost in London?Our fixed fee is £645 with the survey included. The council charges £274 for a certificate on work you plan, or £548 for one on work already built.

Measured Building Survey

Red-brick terrace with white-painted gables and finials, a house type whose walls are rarely square or the same on any two floors

From £200How much does a measured building survey cost in London?Our standalone measured survey starts at £200. The same visit is already inside every drawing package, so you only buy it separately if you are drawing with someone else.

Planning Amendments

Patio doors and blockwork on the back of an extension with a scaffold tower beside it, built before a late change to the plans

From £295How much does a planning amendment cost in London?Our fixed fee is £295. The council charges £46 for a non-material change on a householder permission, £89 for a section 73 variation and £548 for a new application, and the right route depends on the change.

Tender Package Drawings

Rear extension under construction with blockwork walls and a steel beam opening up the back of a house

From £995How much does a tender package cost in London?Our fixed fee is £995 for the drawings, specification and trade schedule that let three builders price the same job, so their quotes can be compared line by line.

Building Regulations Regularisation

Plasterer finishing the join between a plasterboard ceiling and a wall, a finish that can hide the structure behind it

From £845How much does building regulations regularisation cost in London?Our fixed fee is £845 with the survey included. Building control charges its own fee, and any remedial work it asks for is the builder's cost, not part of ours.

Discharge of Planning Conditions

Semi-detached house with a two-storey rear extension in blockwork under scaffold, waiting for the details its planning conditions require

From £345How much does discharging planning conditions cost in London?Our fixed fee is £345, and the council charges £89 for householder conditions and £309 in any other case. The council has 8 weeks to reply unless you agree longer.

Retrospective Planning Applications

Finished render-clad rear extension with French doors and a small first-floor addition on the back of a London semi

From £695How much does retrospective planning permission cost in London?Our fixed fee is £695 with the survey included, and a householder application costs the council's £548 on top. The bigger question is whether the work will be allowed, and this post is honest about it.

Prior Approval Extension Drawings

Single-storey rear extension under construction behind a London semi, with blockwork walls and a steel beam across the opening

From £595What does a prior approval extension cost in London?Two fixed fees: £249 to the council and £595 to us for the survey, notification drawings and submission. What each covers, and when the cheaper route is closed.