Front-porch drawings for Greenwich homes — checked against the Class D permitted-development limits, drawn to the Royal Borough of Greenwich's frontage guidance, delivered in days and revised free until your decision, with a free approval-odds check first.
the Royal Borough of Greenwich granted 87% of the householder planning decisions it made in its latest published year — level with the 87% England-wide householder average. The Maritime Greenwich World Heritage Site and its buffer zone add height and setting tests near the town centre, 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.
Class A and Class B set the thresholds — a rear dormer to 40m³ on a terrace or 50m³ on a semi or detached, and a single-storey rear extension to 3m on a terrace or 4m on a detached house — beyond which the Royal Borough of Greenwich needs a full application. Greenwich carries at least one Article 4 direction, and conservation areas including West Greenwich, Blackheath Park and Ashburnham Triangle remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Greenwich is determined against an 8-week statutory target.
Greenwich (Georgian and early-Victorian terraces inside the West Greenwich conservation area), Blackheath (villas and terraces around the Cator Estate and Blackheath Park), Westcombe Park (Edwardian and Victorian villas climbing the hill above the river), Charlton (the older cottages and interwar streets around Charlton Village), Eltham (interwar semis including the Well Hall Progress Estate) and Woolwich (denser Victorian terraces amid riverside regeneration) — these are the Greenwich pockets our drawings cover most. Heritage designations here include West Greenwich, Blackheath Park, Ashburnham Triangle, Westcombe Park and Charlton Village. the Royal Borough of Greenwich weighs each proposal against the Royal Greenwich Local Plan: Core Strategy with Detailed Policies and the borough's residential extensions design guidance, where protected Thames-side views shape what roof additions are acceptable on the borough's northern edge. On roofs the borough is parapet and butterfly roofs on the Georgian terraces and pitched and hipped roofs on the villas, over Georgian and early-Victorian terraces, Victorian and Edwardian villas and riverside and interwar housing.
A porch is the smallest thing most people build and the most visible. It sits on the principal elevation, so the Royal Borough of Greenwich reads it against the rhythm of the whole street rather than against your own house alone. Greenwich is largely Georgian and early-Victorian terraces, Victorian and Edwardian villas and riverside and interwar housing, and where a run of houses shares one front-door detail, a porch that ignores it stands out from fifty metres away.
The three Class D numbers do most of the work: 3 square metres of external floor area, 3 metres of height, and a 2-metre stand-off from any boundary that fronts a highway. That last one catches more porches in Greenwich than the other two put together, because front gardens are shallow and the boundary is measured to the highway line, not to the kerb. We measure it on site and set the porch inside the limit, or we tell you honestly that it needs an application.
In Greenwich's conservation areas — West Greenwich, Blackheath Park, Ashburnham Triangle, Westcombe Park and Charlton Village among them — a porch is assessed on materials, roof form and how the door surround is treated. Article 4 directions strip out permitted-development rights across Greenwich's conservation areas such as West Greenwich and Westcombe Park, so front-facing and roof alterations there need a full application.
Most modest porches are permitted development. You will need to apply to the Royal Borough of Greenwich if any of these apply:
We draw the porch to scale against the three Class D thresholds, show the highway boundary on the block plan, and detail the roof, door surround and threshold so the Royal Borough of Greenwich — and your neighbours — can see exactly what will be built.
Below is the Royal Borough of Greenwich's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Greenwich approves most householder applications, but the Maritime Greenwich World Heritage Site and its dense conservation coverage set the terms for what works near the town centre and the river. A porch application turns on frontage design and the highway stand-off, so a pack that dimensions both is decided faster than a sketch.
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 Greenwich, Blackheath and Westcombe Park, the porches that go through are the ones that borrow from the house: the same brick or render, a roof pitched to match, and a door and side-light proportioned to the original opening. On georgian and early-victorian terraces, an open-sided canopy is often the better answer than an enclosed porch — it stays clear of the floor-area limit and leaves the frontage legible.
The Maritime Greenwich World Heritage Site and its buffer zone add height and setting tests near the town centre, which is exactly the sort of local reading a porch has to satisfy. Where the 2-metre highway stand-off cannot be met, we either recess the porch behind the building line or prepare a full householder application with an elevation that shows the porch in the context of its neighbours — the drawing that answers the officer's real question.
We draw porches on every street type in Greenwich. A few of the areas where porch work comes up most often:
Porch drawings for Greenwich — Georgian and early-Victorian terraces inside the West Greenwich conservation area — dimensioned to the Class D limits and drawn to the Royal Borough of Greenwich's frontage guidance.
Porch drawings for Blackheath — villas and terraces around the Cator Estate and Blackheath Park — dimensioned to the Class D limits and drawn to the Royal Borough of Greenwich's frontage guidance.
Porch drawings for Westcombe Park — Edwardian and Victorian villas climbing the hill above the river — dimensioned to the Class D limits and drawn to the Royal Borough of Greenwich's frontage guidance.
Porch drawings for Charlton — the older cottages and interwar streets around Charlton Village — dimensioned to the Class D limits and drawn to the Royal Borough of Greenwich's frontage guidance.
Porch drawings for Eltham — interwar semis including the Well Hall Progress Estate — dimensioned to the Class D limits and drawn to the Royal Borough of Greenwich's frontage guidance.
Porch drawings for Woolwich — denser Victorian terraces amid riverside regeneration — dimensioned to the Class D limits and drawn to the Royal Borough of Greenwich's frontage guidance.
Class D sets three thresholds. This is how the common cases fall either side of them.
| Porch type | Permitted development? | What decides it | What the Royal Borough of Greenwich checks |
|---|---|---|---|
| Open canopy over the door | Usually yes — no enclosed floor area | Whether it is enclosed | Projection, materials, roof form |
| Enclosed porch under 3m² | Yes, if under 3m high and 2m from the highway boundary | External floor area | Highway stand-off, frontage design |
| Enclosed porch over 3m² | No — full application | External floor area | Bulk on the principal elevation |
| Porch in a conservation area | Only if it meets Class D and no Article 4 applies | Designation status | Materials, door detail, streetscape |
| Porch on a listed building | No — listed building consent required | Listing | Impact on special interest |
Thresholds from the Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2, Part 1, Class D.
A fixed process built around how the Royal Borough of Greenwich validates and decides frontage work — most porch drawings are submission-ready within seven days of survey.
Send us your Greenwich postcode. We confirm conservation, Article 4 and listing status, measure the front boundary against the 2-metre highway rule, and score your odds against live the Royal Borough of Greenwich decisions.
We measure the frontage, threshold level, door opening and the distance to the highway boundary — the four numbers a porch application stands or falls on.
Chartered designers develop the porch to your brief, either inside the Class D limits or as a full application drawn to the Royal Borough of Greenwich's design guidance, with materials and roof form matched to the house.
We submit the certificate or application, manage validation and case-officer queries, and revise the drawings free until the Royal Borough of Greenwich issues its decision.
Usually not, provided it meets all three Class D limits: no more than 3 square metres of external floor area, no more than 3 metres high, and no part within 2 metres of a boundary fronting a highway. Break any one and you need a householder application to the Royal Borough of Greenwich. On designated land, and on listed buildings, the position is different and we check it before drawing.
It is the external floor area — measured to the outside face of the porch walls, not the usable space inside. That catches people out, because a porch that feels small internally can exceed 3 square metres once the wall thickness is counted. We measure and dimension it on the plan so the figure is beyond argument at validation. This applies to your Greenwich address specifically. the Royal Borough of Greenwich is the decision-maker.
No part of a permitted-development porch may be within 2 metres of any boundary of the property that fronts a highway. In Greenwich this is the limit that most often pushes a porch into a full application, because front gardens are shallow. The measurement is to the boundary line, which is not always where the kerb or the fence sits — we establish it on survey. the Royal Borough of Greenwich is the decision-maker.
Yes, but the design bar is higher. Class D is not automatically removed in a conservation area, so a compliant porch can still be permitted development — however the Royal Borough of Greenwich will expect materials, roof pitch and door detail to respect the area's character, and an Article 4 direction can remove the right entirely. In West Greenwich and Blackheath Park we confirm the position on your specific address first.
A porch is exempt from most building regulations if it is under 30 square metres, at ground level, separated from the house by the existing external door, and any glazing and electrics meet Parts K, N and P. Remove the original front door and the porch becomes part of the heated envelope, at which point insulation and Part L apply. We flag which side of that line your design falls on. This applies to your Greenwich address specifically. the Royal Borough of Greenwich is the decision-maker.
A householder application runs to an eight-week statutory target, and a lawful development certificate to the same. The realistic risk is not the decision but validation — an incomplete pack is returned rather than determined. We prepare the submission validation-complete and handle officer queries so the timetable holds. This applies to your Greenwich address specifically. the Royal Borough of Greenwich is the decision-maker.
We quote each Greenwich porch individually, because frontage type and boundary position 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 the Royal Borough of Greenwich approves. Call 020 7864 7245 to start.
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