
Measured Building Survey in Earlsfield SW18
Fixed-fee, MCIAT-chartered measured building survey for Earlsfield (SW18) homeowners — London Borough of Wandsworth validation and local constraints handled from the start.
Earlsfield (SW18) is one of Wandsworth's most uniform late-Victorian and Edwardian terraced neighbourhoods, sitting between Garratt Lane and Wandsworth Common. Because so many houses share the same footprint, the borough's design expectations for side-return, rear and loft projects here are well established — meeting them first time is straightforward when the drawings follow Wandsworth's residential extension guidance.
The main designated control is the Wandsworth Common conservation area along the western edge, where roofline changes and dormers face tighter assessment than on the surrounding streets. We check where an Earlsfield property sits relative to that boundary, and whether it backs the railway, before recommending a permitted-development or full-application route.


Planning in Earlsfield (SW18): what to know before you apply
SW18 has no borough-wide householder Article 4 direction, so many Earlsfield houses retain permitted development rights for rear and loft work — but the Wandsworth Common conservation area is the exception, and the consistent terraced grain means Wandsworth has clear, well-documented expectations for side-return and rear depth.
Typical Earlsfield housing stock
Long runs of late-Victorian and Edwardian terraces on the 'Magdalen' and Tonsleys streets between Garratt Lane and Wandsworth Common, with Edwardian mansion flats and railway-side plots around Earlsfield station.
Streets we regularly draw for in Earlsfield
Garratt Lane · Magdalen Road · Trewint Street · Penwith Road
Measured Building Survey for Earlsfield (SW18) homes: the package and the process
Every measured building survey we prepare for an Earlsfield property is drawn to London Borough of Wandsworth’s validation standards and tuned to the SW18 constraints above. Here is what the drawing package covers and how the process runs from first survey to approval.
Every accurate drawing starts with an accurate survey. Before any proposed extension, loft conversion or alteration can be designed, we need to know exactly what already exists — the true dimensions of each room, the position and size of every door and window, floor-to-ceiling heights, wall thicknesses, roof pitches and the exact shape of the plot. A measured building survey captures all of this on site using a laser distance meter, recording existing plans, elevations and sections to millimetre accuracy, rather than relying on old estate agent floor plans, a previous owner's drawings, or rough on-site guesswork.
This matters more than it might seem. A design drawn on top of an inaccurate existing survey can look correct on paper and then not actually fit once a builder is on site — a wall that is 200mm out of position, a ceiling height that is lower than assumed, or a roof pitch that does not match reality can all force a costly redesign mid-build. A fresh, laser-measured survey de-risks that from the outset: the proposed extension, loft conversion or internal alteration is designed against the real dimensions of your home, not an approximation, so what is drawn is what can actually be built.
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.
| Output drawing | Relies on the measured survey for |
|---|---|
| Floor plans | Accurate room dimensions and layout for sale, letting or lease use |
| Planning drawings | Existing plans, elevations and sections to compare against the proposal |
| Building regulations drawings | Accurate existing structure to design technical compliance against |
| Structural calculations | True spans, floor-to-ceiling heights and existing structural elements |
Measured Building Survey in Earlsfield SW18 — FAQs
How much does a measured building survey cost?+
How long does a measured survey take?+
Is a measured survey the same as a floor plan?+
Do I need a measured survey if I am only doing internal work?+
Can the survey be used for more than one purpose?+
Do I need planning permission for a side-return extension in Wandsworth?+
What does Wandsworth's basement Article 4 direction mean for me?+
How long will Wandsworth take to decide my application?+
Can you design an extension for a converted flat near the commons?+
How much do Wandsworth planning drawings cost?+
Get your free Earlsfield planning assessment
Tell us your Earlsfield (SW18) address and ambition — we'll confirm feasibility, local constraints and a fixed fee within one working day.