Side-return infill drawings for Richmond upon Thames terraces — the glazed extension that fills the redundant side alley and opens up the kitchen, drawn to Richmond upon Thames Council's guidance, delivered in days and revised free until your decision, with a free approval-odds check first.
Richmond upon Thames Council granted 86% of the householder planning decisions it made in its latest published year — 1 point below the 87% England-wide householder average. The borough's exceptional conservation coverage means design detail and materials are scrutinised closely, which is where a policy-literate drawing pack earns its keep. Its dominant Georgian (1714–1837), Victorian (1837–1901), Edwardian (1901–1910) and interwar (1918–1939) housing stock sets the design brief on most streets.
Under Class B, a rear dormer stays permitted development up to 40m³ of added roof volume on a terrace or 50m³ on a semi-detached or detached house, while Class A allows a single-storey rear extension of 3m beyond the original rear wall on a terrace and 4m on a detached house before a full application is needed. Richmond upon Thames carries at least one Article 4 direction, and conservation areas including Richmond Green, Twickenham Riverside and Kew Green remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Richmond upon Thames is determined against an 8-week statutory target.
Richmond (Georgian and Victorian houses around Richmond Green), Twickenham (riverside conservation streets and Edwardian terraces), Kew (Victorian houses around Kew Green), Teddington (Edwardian terraces and villas), East Sheen (Edwardian family houses near Sheen Common) and Ham (period cottages and houses by Ham Common) — these are the Richmond upon Thames pockets our drawings cover most. Heritage designations here include Richmond Green, Twickenham Riverside, Kew Green, Ham Common and East Sheen (Sheen Common). Richmond upon Thames Council weighs each proposal against Richmond Local Plan and the House Extensions and External Alterations SPD, where roof alterations and dormers visible from the street or river are strongly resisted. On roofs the borough is pitched roofs on the villas and butterfly roofs on the terraces, over Victorian and Edwardian villas and terraces, Georgian houses near the river and interwar semis in the outer wards.
The side return is the classic terrace fix, and Richmond upon Thames has the stock for it — the borough is built largely from Victorian and Edwardian villas and terraces, Georgian houses near the river and interwar semis in the outer wards, and the Victorian and Edwardian versions almost all have an L-shaped back addition with a wasted alley beside it. Fill that alley and the dark galley kitchen becomes a bright, square room the full width of the house. Richmond upon Thames Council judges the infill against Richmond Local Plan and the House Extensions and External Alterations SPD, and because it runs along the party boundary, the neighbour relationship is read before the design.
That boundary is where the drawings earn their keep. We set the infill wall on or up to the line, keep the roof — usually a glazed lantern or a shallow pitch tying into the existing back-addition slope — below the neighbour's first-floor windows, and detail the rainwater and party-wall junction so the build is watertight and the Party Wall Act is satisfied. The borough's exceptional conservation coverage means design detail and materials are scrutinised closely, so we resolve it on the section rather than leave it to the case officer.
Many of Richmond upon Thames's terraces sit in conservation areas — Richmond Green, Twickenham Riverside, Kew Green, Ham Common and East Sheen (Sheen Common) among them — where a side extension is no longer permitted development. Richmond is one of London's most conservation-heavy boroughs, with widespread Article 4 directions — on many streets even minor external alterations that would be permitted development elsewhere need a full application. We confirm the designation before a line is drawn.
Some single-storey side returns in Richmond upon Thames are permitted development, but the width and boundary make an application more likely than for a straight rear extension. You will normally need to apply to Richmond upon Thames Council if any of these apply:
We draw the infill wall on the boundary, the glazed roof below the neighbour's windows and the party-wall junction on the page — the details Richmond upon Thames Council's officers and your neighbour both check — and submit a validation-complete pack, whether that is a lawful development certificate or a full householder application.
Below is Richmond upon Thames Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Richmond grants a fair share of householder applications, but its dense conservation-area and Article 4 coverage makes design quality and roof visibility decisive. Side returns hinge on width, roof glazing and the party boundary, so a pack that resolves those details upfront is decided faster and refused less often than a DIY submission.
Source: MHCLG planning application statistics (householder decisions, rolling year). Compare every borough on our London approval-rate league table.
Tell us about your project and get a fixed, no-obligation quote back within one working day. If you don't need planning permission at all, we'll tell you that too — for free.
Across Richmond, Twickenham and Kew, the approved side return is a single-storey infill roofed with a glazed lantern or roof light to pull daylight deep into the plan, its flank wall built on the boundary and finished to match the host brick. On the borough's victorian and edwardian villas and terraces, this is frequently the single biggest gain in usable ground-floor space, and where it stays within the width and height limits it can proceed under permitted development or a lawful development certificate.
Roof alterations and dormers visible from the street or river are strongly resisted. We keep the glazed roof below the neighbour's cill line, set the gutter and the party-wall flashing so water and maintenance are designed in, and — where owners want the full open-plan room — pair the infill with a rear extension as a single wraparound application. That way Richmond upon Thames Council sees one coherent scheme rather than two overlapping ones.
We draw side-return infills on every terraced street in the borough. A few of the neighbourhoods where Richmond upon Thames side returns come up most often:
Side return extension drawings for Richmond's Georgian and Victorian houses around Richmond Green — width-checked, party-wall detailed and drawn to Richmond upon Thames Council's guidance.
Side return extension drawings for Twickenham's riverside conservation streets and Edwardian terraces — width-checked, party-wall detailed and drawn to Richmond upon Thames Council's guidance.
Side return extension drawings for Kew's Victorian houses around Kew Green — width-checked, party-wall detailed and drawn to Richmond upon Thames Council's guidance.
Side return extension drawings for Teddington's Edwardian terraces and villas — width-checked, party-wall detailed and drawn to Richmond upon Thames Council's guidance.
Side return extension drawings for East Sheen's Edwardian family houses near Sheen Common — width-checked, party-wall detailed and drawn to Richmond upon Thames Council's guidance.
Side return extension drawings for Ham's period cottages and houses by Ham Common — width-checked, party-wall detailed and drawn to Richmond upon Thames Council's guidance.
Whether a side return in Richmond upon Thames needs permission comes down to width, storeys and whether the street is designated. This is how the cases compare.
| Side return type | Permitted development? | What it gains | What Richmond upon Thames Council checks |
|---|---|---|---|
| Single-storey infill, within limits | Often yes, if under half the house width | Full-width kitchen-diner | Width, 4m height, roof glazing |
| Single-storey, over half width | No — full application | Wider room, more light | Boundary treatment, neighbour amenity |
| Two-storey side return | No — full application | Room above as well as below | Bulk, overlooking, terrace rhythm |
| Wraparound (side + rear) | No — full application | L-shaped open-plan ground floor | Combined footprint, garden retained |
In conservation areas such as Richmond Green and Twickenham Riverside, side extensions are not permitted development and always need a full application.
A fixed process built around how Richmond upon Thames Council validates and decides side-return applications — most drawings are submission-ready within seven days of survey.
Send us your Richmond upon Thames postcode and terrace type. We confirm your conservation and Article 4 status, whether the infill stays within the side-extension width limit, and score your odds against live Richmond upon Thames Council decisions.
We measure the side alley, the back-addition wall, floor and eaves levels and the neighbour's window heights — the numbers the width limit, roof pitch and party-wall detailing depend on.
Chartered designers develop the infill and its glazed roof to your brief, drawn inside the permitted-development limits or to Richmond upon Thames Council's extension guidance, with the boundary and party-wall junction detailed.
We submit the certificate or application, manage validation and case-officer queries, and revise the drawings free until Richmond upon Thames Council issues its decision.
Sometimes not. A single-storey side-return infill can be permitted development if it is no wider than half the original house, no higher than 4 metres, and the property is not on designated land. In Richmond upon Thames you will need a full application to Richmond upon Thames Council for anything wider or taller, for a two-storey side return, and for any side extension in a conservation area such as Richmond Green and Twickenham Riverside, where those rights are removed.
It is an infill that fills the narrow open alley running alongside the rear back-addition of a Victorian or Edwardian terrace — the strip of ground that is usually too small to use. Building over it squares off the ground floor, so a cramped galley kitchen becomes a full-width room. Richmond upon Thames's period terraces are ideally suited to it, which is why the side return is one of the borough's most common extensions. Richmond upon Thames Council is the decision-maker.
Almost always. A side return is built on or up to the boundary with your neighbour, so the Party Wall etc. Act applies and you must serve notice before work starts — this is entirely separate from Richmond upon Thames Council's planning decision. We detail the party-wall junction on the drawings and flag the notice early so a surveyor can be appointed without delaying the build.
Yes, and it is common — the combined L-shape is a wraparound extension. Once the side infill joins a rear projection beyond the permitted-development depth, the whole thing needs a full householder application to Richmond upon Thames Council rather than qualifying as permitted development. We draw it as one coherent scheme so the council assesses a single footprint, which reads more clearly than two overlapping proposals.
A householder planning application in Richmond upon Thames runs to a statutory eight-week target, and a lawful development certificate to eight weeks as well, though an incomplete pack can stall at validation. Because a side return involves the boundary and roof glazing, a complete, well-detailed submission matters — we prepare it validation-complete and manage officer queries to keep the decision on track. Richmond upon Thames Council is the decision-maker.
We price each Richmond upon Thames side return individually, because alley width and roof form vary house to house, and send a fixed, no-obligation quote within one working day. It covers the full drawing pack with free revisions until Richmond upon Thames Council approves, and we confirm at the outset whether your infill is permitted development or needs an application. Call 020 7864 7245 to start.
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