Garage Conversion Drawings in Greenwich
Fixed-fee, MCIAT-chartered garage conversion drawings for Greenwich homeowners — Royal Borough of Greenwich validation and local constraints handled from the start.
Greenwich stretches from the Georgian streets of West Greenwich and the Georgian-fringed heath at Blackheath — set against the Maritime Greenwich World Heritage Site — out to the Edwardian villas of Westcombe Park and the interwar and post-war suburbs of Eltham and Kidbrooke. The northern, historic core carries strong conservation and protected-view control, while the outer suburbs and newer riverside development along the Thames offer more generous plots for extensions and lofts. The right route depends heavily on where in the borough you are.
The character shifts street by street. Conservation areas at West Greenwich, Ashburnham Triangle, Blackheath, Westcombe Park, Eltham Park and Woolwich each carry design control over materials, rooflines and front elevations, and the sloping sites around Blackheath and the Greenwich hills shape what an extension can be. Protected views toward the Royal Observatory and across the river, together with Article 4 directions on HMO conversions in parts of the borough, mean the constraints on a heritage-led scheme in the historic core differ sharply from a straightforward suburban addition toward Eltham or Charlton.
We prepare Greenwich planning drawings tuned to the specific area — heritage-led applications around West Greenwich and Blackheath, and simpler extension and loft schemes toward Eltham and Kidbrooke — confirming the World Heritage Site setting and conservation designations for your address first. It is the same council-accepted drawing set an architect would prepare, usually at around 30% less, with a fixed fee agreed up front, a roughly seven-day drawing turnaround and free redraws until the Royal Borough of Greenwich approves. Most householder applications are decided within the statutory eight-week period once validated, so we draw to the council's validation checklist from the start.
Planning in Greenwich: what to know before you apply
A distinctive Greenwich consideration is the Maritime Greenwich World Heritage Site and its buffer zone, where the council protects townscape and long views toward the Royal Observatory — proposals nearby are assessed against that setting. Conservation-area control in West Greenwich, Blackheath and Westcombe Park, and Article 4 directions on HMO conversions in parts of the borough, also apply. We confirm what affects your address before drawing.
Typical Greenwich housing stock
Georgian and early-Victorian terraces around West Greenwich and Blackheath, Edwardian villas in Westcombe Park, interwar and post-war housing toward Eltham and Kidbrooke, and newer riverside development along the Thames.
Areas we regularly draw for in Greenwich
Greenwich · Blackheath · Westcombe Park · Charlton · Woolwich · Eltham · Kidbrooke
What the numbers say about Greenwich planning decisions
These are Royal Borough of Greenwich’s own reported figures, published by government rather than estimated by us. They are what we design against — a borough that refuses one householder application in five needs a different drawing package from one that refuses one in twenty.
Permitted development in Greenwich
Larger householder extensions put to Royal Borough of Greenwich under the prior-approval route, and lawful-development certificates decided, over eight quarters.
| Prior approval not requiredWent ahead without a full application | 0 |
|---|---|
| Prior approval granted | 154 |
| Prior approval refused | 126 |
| Granted where a decision was neededFrom 280 determinations | 55% |
| Building upwards, prior approval refused | 0 |
| Certificates of lawful development decided | 839 |
Source: Ministry of Housing, Communities and Local Government (PS1 district planning application statistics). Open Government Licence v3.0 Extracted 2026-08-16.
What removes permitted development in Greenwich
Live entries on the national planning registers for Royal Borough of Greenwich. Article 4 directions withdraw permitted development rights, so a project inside one needs a full application rather than prior approval. Revoked and expired entries are excluded.
| Conservation areasPermitted development is already narrower inside one | 14 |
|---|
Source: MHCLG Planning Data Platform. Open Government Licence v3.0 Extracted 2026-08-16.
Garage Conversion Drawings for Greenwich homes: the package and the process
The visible change is the front elevation, and that is what the drawings lead on: the garage door replaced by wall and window, drawn with the brickwork bonding, cill line and window proportion set out so the infill reads as part of the house rather than as a blocked opening.
Behind it the work is technical. The existing slab is rarely insulated or damp-proofed to habitable standard, the walls are often single-skin, and the drawings have to show the new floor build-up, insulation line and any structural work over the old opening for Building Control to sign off.
The conversion needs a garage attached to or inside the house, which is largely a feature of interwar and post-war semis and detached stock. A detached garage down the garden is a different project: converting it is an outbuilding question, not an extension of the house.
Is converting a garage permitted development in London?
Converting an integral or attached garage into habitable space, within the existing footprint and without changing the roofline, is often permitted development, meaning no planning application is required. It has to remain within the existing building envelope — extending the footprint, adding height, or altering the roof pushes the project into full planning permission instead. We assess your specific garage against these limits before recommending a route.
Even where a project is permitted development, many homeowners still ask us for a Lawful Development Certificate — a formal confirmation from the council that the works do not need planning permission. It is optional rather than compulsory, but it is useful evidence for mortgage lenders, buyers' solicitors and building insurers later on, and we can prepare the application alongside the building regulations drawings at no great extra delay.
Article 4 directions and other restrictions on garage conversions
Permitted development rights are not universal across London. An Article 4 direction removes them for a defined area — common in conservation areas and some suburban estates — meaning a garage conversion that would be permitted development elsewhere needs a full planning application there instead. Separately, some estates built with planning conditions attached to the original permission restrict garage conversions regardless of Article 4, usually to protect the street's parking or appearance. A conveyancing pack or the original planning decision notice for the house will sometimes reveal a condition of this kind, so we ask to see it where one exists rather than assuming the general permitted development rules apply. We check both before you commit to a route.
What building regulations apply when you convert a garage into living space?
A garage floor typically sits below the damp-proof course of the rest of the house and was never insulated, so the drawings specify a new insulated floor build-up and damp-proofing detail that ties into the existing structure without raising the floor level awkwardly against internal doors.
Part L thermal standards apply to the new walls, floor and any replacement roof covering, and habitable rooms need adequate ventilation — background trickle vents plus extract in wet areas — designed into the drawings rather than left to the builder to improvise on site.
Where the garage sits directly beneath a bedroom or other habitable room, or shares a wall with the main house, fire separation between the new room and the rest of the property also needs checking, since garages are sometimes built to a lower fire standard than the house itself. We review this on a case-by-case basis as part of the same building regulations package.
| Route | Trigger | Planning position | Fee from |
|---|---|---|---|
| Straightforward permitted development conversion | No footprint or roofline change | Lawful Development Certificate optional, building regs required | £1,100 |
| Article 4 area or restricted estate | Permitted development rights removed | Householder planning permission needed | £1,600 |
| Garage conversion combined with an extension | Footprint enlarged beyond the garage | Full planning plus structural calculations | £2,200 |
Garage Conversion Drawings across Greenwich
Garage Conversion Drawings in Greenwich — FAQs
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