Garden room drawings in Tower Hamlets

Small plots and the share of land that is garden

Gardens are scarce here. Only 7.4 per cent of the borough's land was domestic garden in the national land-use survey, and just 12 per cent of households live in a house or bungalow. Most garden rooms are therefore planned for a narrow terraced yard or a shared communal space, and the drawings are fiddly in a way that a suburban plot is not.

In a small yard the coverage cap arrives quickly. The order's wording is Buildings may not cover more than 50% of the curtilage (excluding the original house). Once a bin store, a bike shed and a patio are counted, a modest studio can use up the allowance. We measure every existing structure on the survey and total the footprint on the site plan, so the figure is checked on paper before anyone orders a kit.

Height is the second squeeze. The national rule reads Max 2.5 m if within 2 m of a boundary; otherwise 4 m dual-pitched roof or 3 m any other roof, and the eaves limit is 2.5 m. On a yard only a few metres wide almost every wall is near a boundary, so the lower height applies and the roof has to be designed around it, often as a flat or low mono-pitch section.

Planning route and how Tower Hamlets decides

When a garden room meets every limit, we advise a lawful development certificate so you hold written proof for a buyer or lender. When it does not, the route is a householder application built on our planning drawings in Tower Hamlets.

The borough decided 191 householder applications in its latest published year, granted 92.7 per cent and decided 95.8 per cent in time. Those are borough-wide figures about extensions of every kind, not a forecast for your yard, but they show that well-drawn householder schemes are routinely dealt with on schedule.

If the fee applies, the national figure is £272 for works within the boundary of an existing dwelling, paid to the council and separate from our fee.

Building Regulations for a Tower Hamlets outbuilding

Planning and Building Regulations are separate tests. One exemption applies where Detached building up to 15 m² with no sleeping accommodation is exempt. The wider one is Detached single-storey building up to 30 m², no sleeping accommodation, at least 1 m from the boundary or substantially non-combustible, is exempt.

The phrase that catches people is no sleeping accommodation. A studio with a sofa bed used for guests loses the exemption. Where it applies we add the foundation, insulation and electrical notes through our building regulations drawings service.

Planning a garden room on a narrow yard

Most Tower Hamlets yards are not rectangles of lawn. They are slim strips behind a terrace, or shared courts behind a block, and the building has to be drawn to the centimetre. We start with a measured survey that records boundary walls, drain covers, neighbouring windows and any tree canopy, because every one of them shifts where a building can go and how it can be built.

Access is the practical problem that catches owners out. A kit or a delivered pod has to come through the house, down a side passage or over a wall, and a tight route can rule out a one-piece unit or force a site-built frame. We note the delivery route on the plan and suggest a construction method to suit it, so the builder does not discover the passage is too narrow on the day.

Overlooking is the neighbour issue. A window in a garden room that faces a bedroom window across a narrow yard is the kind of detail that draws an objection, so we place glazing deliberately, often with a high-level or north-facing opening, and show the sightlines on the elevation.

There is also the question of what happens after you build. A building that is lawful today but changes use later, for example into a rented studio, needs fresh thought. Keep the room as an office, gym or hobby space and the drawings and certificate stay valid for the life of the ownership.

What we draw and what it costs

The set has a site plan, floor plan, elevations, a roof and floor section and a materials note, produced from a measured survey of the yard and modelled in 3D first so you can see the roof against the fence line. Garden room drawings start at £495, VAT included, fixed before you commit.

If the council asks for changes we redraw at no charge until approval; we never promise a decision. For a full list of what we do in the borough see architectural drawings in Tower Hamlets, or compare how garden room drawings in Barking and Dagenham differ in a lower-density borough.