Section outline: design and access statement for an infill plot

A design and access statement infill plot submission is short, and that is the point. A single dwelling on a gap site between two existing houses needs a statement of perhaps eight to twelve pages that answers one question convincingly: why this house, on this plot, in this street, at this size. The structure below follows the content the regulations require, in the order an officer reads it.

Whether a statement is required at all depends on the category of application. Major development and development in a conservation area or affecting a listed building bring the requirement, and many infill plots in older streets fall into the second group. Where it is not required, a short one is still worth writing, because an infill plot is judged on context and context has to be explained.

Site appraisal and context analysis

This section establishes that you have looked properly. It is also the section officers read most carefully, because an applicant who has misread the street will have designed the wrong house.

Cover the plot itself: dimensions, area, orientation, levels, existing vegetation, boundaries and their treatment, and the existing access if any. Then the immediate context, which for an infill plot means the two flanking properties in detail: their height in storeys and in metres, their building line, their eaves and ridge heights, their plot widths, their window positions on the flank elevations, and their garden depths.

Then widen to the street. Describe the prevailing pattern rather than cataloguing every house: the rhythm of plot widths, whether the building line is consistent, the predominant roof form and orientation, the materials palette, the treatment of front boundaries, whether parking is on plot or on street, and the spacing between buildings.

Finish with planning history and designations. The planning history of the plot itself matters, and a previous refusal on the site is a document to read and address rather than ignore.

Include a street elevation drawing showing the plot in the context of its neighbours at the same scale. It does more work than any paragraph.

Constraints and opportunities

Keep this short and honest. A list of constraints with no acknowledged difficulty reads as a sales document.

The constraints to address on a typical infill plot are the plot width against the prevailing rhythm, the relationship with flank windows on either side, overlooking of neighbouring gardens, the achievable parking and turning, tree root protection areas if a tree is nearby, levels and drainage, and any sewer or utility easement crossing the plot.

The opportunities are the ones your design exploits: a corner that allows a dual aspect, an orientation that gives a south-facing garden, a level change that lets the ridge sit lower than the neighbours', or an existing hedge that gives immediate screening.

Where a tree is within influencing distance, the tree constraints are established by a survey carried out to the relevant British Standard, and the Tree Survey feeds the layout rather than following it. Produce it before the footprint is fixed.

Use, amount and layout

Use is one line for a single dwelling, and the line matters only where the surrounding area is mixed or where the plot was previously something else.

Amount is the quantum: number of dwellings, number of bedrooms, gross internal floor area, and the site coverage as a percentage. Compare the figures with the neighbours. A statement that says the proposed floor area sits between those of the two flanking houses has made its own argument.

Layout is where the reasoning belongs. Explain the position of the building line and why it follows, departs from or mediates between the neighbours. Explain the separation distances to each boundary and to each neighbouring window, with dimensions. Explain the garden depth against the prevailing depth in the street. Explain where the bins and the cycle store go, because an officer will look and a validator may require it.

Address overlooking explicitly, with dimensions and with a window-by-window note on the flank elevations. The most common refusal reason on infill plots is loss of privacy, and it is answered by drawings showing the geometry rather than by a sentence promising there will be no harm.

Scale, appearance and materials

Scale means height, bulk and massing. Give ridge and eaves heights in metres above a fixed datum, alongside the equivalent figures for both neighbours. Where the proposal is taller than one neighbour, say so and explain why that is acceptable, usually because of a level change, a set back or a subordinate roof form.

Appearance covers the architectural approach. Two routes are defensible on an infill plot and both can succeed: a contextual design that takes its proportions, roof form and materials from the street, or a contemporary design that responds to the context through proportion, scale and materials without copying. What fails is a design that belongs to neither, usually a developer standard type dropped onto a plot it does not fit.

Materials should be named and sampled: brick by manufacturer and type, roof covering, window frame material and colour, rainwater goods, and any render or cladding. Vague wording invites a materials condition requiring samples, which is an extra approval step to discharge. Where the street has a consistent palette, matching it is the simplest argument available.

The figures in this section should be consistent with those in the drawings and in the Planning Statement, because inconsistency between documents is the fastest way to lose an officer's confidence.

Landscape and boundary treatment

Boundary treatment is disproportionately important on an infill plot, because the front boundary is what the street sees and the side boundaries are what the neighbours live with.

Set out the front boundary treatment and how it relates to the pattern in the street, the side boundary treatment including heights and materials, retained vegetation with its protection during construction, new planting with species and sizes, the hard surfacing extent and whether it is permeable, and the position and specification of any new tree.

Permeability matters beyond landscaping. A new driveway draining to the highway needs the surfacing to be porous or to drain to a permeable area within the plot, and getting that right at design stage avoids a drainage query at validation.

Access for vehicles and pedestrians

This section fails more infill applications than its length suggests, because an access the highway authority will not accept cannot be designed around later.

Cover the access position and width, the visibility splays in both directions with the dimensions achieved and the standard applied, whether the splay falls within land you control, the parking provision against the council's adopted standards, the turning provision so that a vehicle can leave in forward gear where that is required, and the pedestrian access linking the footway with the front door.

Where a new or widened vehicle crossing over the footway is needed, that is a separate approval from the highway authority under highways legislation, and it is worth confirming its feasibility before the application is submitted. A plot with no achievable visibility splay is a plot with a problem no design can solve.

Include the electric vehicle charging position, since the building regulations require provision for a new dwelling with associated parking.

Inclusive access

This is the part applicants skip and officers notice, and it takes half a page.

Describe the approach gradient between the footway and the entrance, the entrance threshold and whether it is level, the door opening width, the circulation width in the hall, the ground floor layout and whether a WC is provided at entrance level, the stair design, and the window cill heights in principal rooms.

For a single dwelling the relevant standards come through the building regulations rather than through planning policy in most authorities, but stating the position shows the design has considered it. Where the local plan applies an accessibility standard, address it by its policy number.

Finish with one short paragraph on how the design evolved: what was changed after the site appraisal, and what any pre-application advice said. An officer who can see the design responded to something is more likely to accept the result.

Browse the 66 report types by category to see what else a single plot application may need, or see pricing for what drafting each document costs. This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.