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Free 2026 London Planning ReportMeasured Building Survey in Old Malden KT4

Loft conversion with skylights in an interwar Old Malden KT4 house, planned for Royal Borough of Kingston upon Thames approval
Old Malden · KT4 · Kingston

Measured Building Survey in Old Malden KT4

Fixed-fee, MCIAT-chartered measured building survey for Old Malden (KT4) homeowners — Royal Borough of Kingston upon Thames validation and local constraints handled from the start.

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Old Malden in KT4 is unusual for the area: a genuine historic village core around its medieval parish church and Plough Green, ringed by a comfortable interwar suburb of detached and semi-detached family houses. Most projects on the suburban avenues are rear extensions, two-storey side additions and loft conversions built to Royal Borough of Kingston upon Thames standards.

Homes within or beside the Old Malden conservation area face tighter control over materials, elevations and any demolition, so schemes there need a conservation-led design. We balance the extra space owners want with the village setting, and prepare planning and building-control drawings that Kingston's officers can approve first time.

Loft conversion with skylights in an interwar Old Malden KT4 house, planned for Royal Borough of Kingston upon Thames approval
Isometric illustration of a Old Malden KT4 home measured building survey design
Proposed floor plan
Old Malden KT4

Planning in Old Malden (KT4): what to know before you apply

There is no published householder Article 4 direction for Old Malden, so many suburban houses retain permitted-development rights; the principal constraint is the Old Malden conservation area covering the historic core, where front, roof and material changes need planning permission. Tree preservation orders on mature plots can also shape foundation and layout decisions.

Typical Old Malden housing stock

Old Malden pairs a small historic village core around the medieval church and Plough Green with a broad interwar suburb of detached and semi-detached houses on curving avenues. The suburban streets support rear and two-storey side extensions and loft conversions, while the older core demands a more sensitive conservation-led approach.

Streets we regularly draw for in Old Malden

Raleigh Drive · Collingwood Avenue · Oakdene Drive · Southwood Drive

What KT4 is actually built of

Measured from 324 classified residential buildings in KT4, not from a description of the area.

Old Malden KT4 housing mix

Residential building form across the KT4 postcode district, from 324 classified buildings.

Attached on more than one side37%
Attached on one side52%
Detached11%
Median building footprint67 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate1.21
Buildings classified324

Source: Ordnance Survey National Geographic Database (derived statistics). Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Extracted 2026-08-17.

Measured Building Survey for Old Malden (KT4) homes: the package and the process

A measured survey is the foundation every later drawing is checked against. We record the building as found — floor plans, elevations, sections, levels and, where needed, the position of structure and services — to a stated tolerance, so nothing downstream rests on an assumption about what is there.

The deliverable is chosen for what happens next. A conversion or extension design wants a layered CAD file that a designer can build on; a party wall or dilapidations matter wants dimensioned PDFs that stand on their own as a record. We agree that before the survey, because it changes what we capture.

Survey effort follows the building, not the floor area. A regular detached house measures quickly; a terrace with a rear outrigger, split levels, and a century of alterations takes longer because the survey has to record what was actually built rather than what the plan form implies.

Why does a planning or building regulations application need a measured survey?

A planning or building regulations application needs to show the existing building accurately alongside the proposed changes, so the council or Building Control can judge the impact of the work against what is actually there. Existing plans, elevations and sections drawn from an accurate measured survey give the borough confidence that the proposal has been designed against real dimensions, and give your builder a reliable set of drawings to price and build from — an application based on inaccurate or assumed dimensions risks queries, delays, or a design that does not translate cleanly on site.

What does a measured building survey capture?

The survey records everything needed to produce accurate existing drawings: internal room dimensions and floor-to-ceiling heights on every level, the position, width and height of every door and window, wall thicknesses, staircase dimensions and headroom, roof shape and pitch, chimney breasts and structural features, and the external footprint and boundary relationship of the property. Where relevant to the project, we also record ground levels, existing drainage runs and neighbouring boundary conditions.

This is captured with a laser distance meter rather than a tape measure, which keeps the survey accurate to within a few millimetres across a whole property and removes the cumulative measuring error that can creep into a hand-measured survey of a larger or more complex building.

Can I reuse an old survey or estate agent floor plan instead?

Generally, no — estate agent floor plans are produced for marketing purposes and are not dimensionally accurate enough to design an extension or loft conversion against, and a previous owner's drawings may not reflect alterations made since, or may simply be inaccurate to begin with. A fresh measured survey is a modest cost relative to the overall project and is the single best way to avoid a redesign once a builder is on site and finds the real dimensions differ from the drawings.

What a measured survey feeds into
Output drawingRelies on the measured survey for
Floor plansAccurate room dimensions and layout for sale, letting or lease use
Planning drawingsExisting plans, elevations and sections to compare against the proposal
Building regulations drawingsAccurate existing structure to design technical compliance against
Structural calculationsTrue spans, floor-to-ceiling heights and existing structural elements
Sheet from a measured building survey package drawn for a Old Malden property in KT4, showing the existing and proposed arrangement at scale
A sheet from the measured building survey package we submit to Royal Borough of Kingston upon Thames for Old Malden (KT4) properties.
FAQ

Measured Building Survey in Old Malden KT4 — FAQs

How much does a measured building survey cost?+
A measured building survey starts from £450, or is included as the first stage of a planning, building regulations or architectural drawing package, depending on the size and complexity of the property.
How long does a measured survey take?+
The site visit itself typically takes a few hours depending on the size of the property, with existing drawings produced from the survey data shortly afterwards as the basis for the next stage of your project.
Is a measured survey the same as a floor plan?+
A measured survey is the site data-capture process; floor plans are one of the outputs drawn from it. The same survey can also produce elevations, sections and the existing-layout base drawing for a planning application.
Do I need a measured survey if I am only doing internal work?+
Usually yes if you are removing or altering walls, since accurate existing dimensions and structural features are needed to design and calculate the changes safely, even where no planning application is required.
Can the survey be used for more than one purpose?+
Yes — a single measured survey typically underpins floor plans, planning drawings, building regulations drawings and structural calculations for the same project, so it only needs to be carried out once.
Do I need planning permission for an extension in Kingston?+
The interwar semis of New Malden, Chessington and Tolworth often keep permitted development rights for rear extensions and lofts, so a full application isn't always needed. Conservation areas such as Surbiton, Coombe and the town centre, and riverside flood-zone constraints, can restrict this. We check your address first and can confirm permitted development with a Lawful Development Certificate.
My Kingston home is near the river — does flood risk affect my plans?+
It can. Riverside plots near Kingston lie within the Thames flood zone, and the council expects flood-risk and finished-floor-level considerations to be addressed for works there. We evidence these within the application so the council can validate and approve without repeated revisions.
Can I build a larger extension on a Coombe plot?+
Often, yes. The substantial detached houses on the Coombe hill sit on generous plots that make larger rear and double-storey extensions viable, subject to design and amenity policy. We design to use the plot fully within permitted-development allowances or a well-evidenced full application, checking the limits for detached homes first.
How long does the Royal Borough of Kingston take to decide?+
Kingston determines most householder applications within the statutory eight-week period once validated; conservation and riverside cases can involve additional consultation. We prepare submissions to the council's validation checklist to avoid the drawing queries that cause most delays.
How much do planning drawings cost in Kingston?+
We agree a fixed fee before starting, typically around 30% below an architect's fee for the same council-accepted drawings, with free redraws until Kingston approves. A suburban semi extension and a riverside or Coombe scheme differ in the evidence required, so we quote once we understand your address and project rather than by the hour.
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