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Free 2026 London Planning ReportBuilding Regulations Drawings in Kennington SE11

Rear garden extension on a Georgian terraced house in Kennington SE11, Lambeth
Kennington · SE11 · Lambeth

Building Regulations Drawings in Kennington SE11

Fixed-fee, MCIAT-chartered building regulations drawings for Kennington (SE11) homeowners — London Borough of Lambeth validation and local constraints handled from the start.

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Kennington SE11 is a tight grid of late-Georgian and early-Victorian terraces a short walk from the Oval, where most homeowners look to rear kitchen extensions and loft conversions to add space without altering the protected street frontage.

Because the Kennington and Walcot Conservation Areas cover much of the outcode, we always confirm which boundary a property sits inside before advising permitted development versus a full householder application — conservation-area status quietly removes several rights a comparable house outside would keep.

Rear garden extension on a Georgian terraced house in Kennington SE11, Lambeth
Isometric illustration of a Kennington SE11 home building regulations drawings design
Proposed floor plan
Kennington SE11

Planning in Kennington (SE11): what to know before you apply

Most Kennington projects run as full householder applications to Lambeth given the conservation-area coverage, with rear extensions and rooflight lofts the usual approvable route. Front and roof changes need the closest attention. We check the exact CA boundary and any listing before choosing the route.

Typical Kennington housing stock

Smart brick terraces that grew from the late 18th century onward, including the Georgian set pieces around Cleaver Square. Many are three- and four-storey flat-fronted houses, now often split into flats or run as family homes with scope for rear and lower-ground extensions.

Streets we regularly draw for in Kennington

Cleaver Square · Cardigan Street · Courtenay Street · Kennington Road

What SE11 is actually built of

Measured from 291 classified residential buildings in SE11, not from a description of the area.

Kennington SE11 housing mix

Residential building form across the SE11 postcode district, from 291 classified buildings.

Attached on more than one side73%
Attached on one side23%
Detached4%
Median building footprint59 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate4.87
Buildings classified291

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.

Building Regulations Drawings for Kennington (SE11) homes: the package and the process

A Full Plans submission is a technical argument, not a picture. The sheets carry construction build-ups for floors, walls and roof, insulation values and junction details, drainage runs and invert levels, fire escape routes and protected stairs, ventilation provision and the structural elements that carry it all. Building Control checks each against the Approved Documents before work starts.

We coordinate the structural design with the architectural sheets in-house, so the beam sizes on the calculations are the beam sizes on the sections, and the openings your builder prices are the openings that were approved. Where a detail is unusual, we draw it rather than leave it to be resolved on site.

Construction details follow the existing fabric. Solid brick walls, suspended timber floors and uninsulated roofs each need a different build-up to reach the required performance, and a terrace has party wall junctions to detail that a detached house simply does not.

What do building regulations drawings cover?

A building control package translates the approved design into a buildable, compliant specification.

  • Construction sections and detailed junctions
  • Structural drawings and calculations (steel beams, foundations, loadings)
  • Part L thermal performance and insulation specification
  • Fire safety — escape routes, protected structure, alarms
  • Drainage and ventilation layouts

Full Plans or Building Notice — which should I choose?

A Full Plans application has your drawings checked and approved by Building Control before work starts, giving certainty and a document lenders and buyers like to see. A Building Notice lets simpler work start sooner but is inspected as it proceeds, with less up-front certainty. For most London extensions and loft conversions we recommend Full Plans, and prepare the package accordingly. Building regulations are a separate consent from planning permission, and the two are often confused — the explainer on permitted development rights sets out which projects escape a planning application but still need building-regs approval, and Architectural Drawings covers the same building-regs package where you want a chartered practice to carry it through to sign-off.

Why coordinate structural calculations in-house?

When the same team draws the building and calculates its structure, the steel schedule matches the drawings and the builder never waits on a missing detail. It removes the classic gap between an architect's drawings and a separately-appointed engineer's calculations.

Full Plans vs Building Notice for a London project
FactorFull PlansBuilding Notice
Drawings checked before work startsYesNo
Up-front certaintyHigh — approval in writingLower — inspected as built
Best forExtensions, lofts, structural workMinor, simple works
Evidence for lenders and buyersFull approval recordCompletion certificate only
Risk of costly on-site reworkLowHigher if issues are found late
Sheet from a building regulations drawings package drawn for a Kennington property in SE11, showing the existing and proposed arrangement at scale
A sheet from the building regulations drawings package we submit to London Borough of Lambeth for Kennington (SE11) properties.
FAQ

Building Regulations Drawings in Kennington SE11 — FAQs

Do I need building regulations approval as well as planning permission?+
Almost always, yes. Planning permission covers what the building looks like; building regulations cover how safely it is built. Most extensions and loft conversions need both.
How long does Building Control approval take?+
A Full Plans application is typically assessed within about five weeks. We prepare a complete package and respond to any conditions promptly, so approval is not held up by missing detail.
Can building regulations drawings be done after planning approval?+
Yes. Many homeowners secure planning permission first, then commission the building regulations package before starting on site. We can pick a project up at either stage.
Are structural calculations included?+
Yes — we produce structural drawings and calculations in-house as part of the building regulations package, so your builder has everything to price and build.
Can you submit to Building Control for me?+
Yes, we prepare and submit the Full Plans package and respond to any Building Control queries.
Do I need planning permission for a side-return extension in Lambeth?+
On many of Lambeth's Victorian and Edwardian terraces in Brixton, Clapham and Streatham, a single-storey side-return or rear extension can fall within permitted development, so a full application isn't always required. Conservation areas such as Clapham Common and Brixton Water Lane can restrict this. We check your street's designation first and can confirm permitted development with a Lawful Development Certificate.
My Lambeth home is a converted flat — does that change things?+
It often does. Many Lambeth houses are converted flats, so ownership, lease and party-wall considerations can matter as much as the planning route, and the freeholder's agreement is usually needed alongside planning. We resolve the ownership and shared-structure context before drawing so the scheme is deliverable, not just consentable.
What does Lambeth's HMO Article 4 direction affect?+
Lambeth applies an Article 4 direction removing permitted development rights for HMO conversions (C3 to C4) in designated parts of the borough, so a change of use to a house in multiple occupation needs a full application there. It doesn't affect a standard family extension, but we confirm whether it applies to your address and use before advising on a route.
How long does Lambeth Council take to decide?+
Lambeth determines most householder applications within the statutory eight-week period once validated. The terraced grids around Clapham and Brixton are party-wall-sensitive with well-established design expectations, so the commonest delay is a drawing query — we prepare submissions to the borough's residential extension guidance to keep them moving.
How much do planning drawings cost in Lambeth?+
We agree a fixed fee before starting, usually around 30% below an architect's fee for the same council-accepted drawings, with free redraws until Lambeth approves. A side-return, a loft and a flat-conversion scheme differ in complexity, so we quote once we understand your street and project rather than charging by the hour.
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