Turn your unused City of London garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulations drawings with Part L thermal compliance, structural calculations for any removed walls, all fixed fee.
Turn your unused City of London garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulations drawings with Part L thermal compliance, structural calculations for any removed walls, all fixed fee.
Housing stock in City of London: Very limited residential — Barbican Estate (listed post-war), Golden Lane Estate, modern luxury flats; overwhelmingly commercial.
Character: Overwhelmingly commercial; residential planning extremely constrained; listed building density the highest of any London borough.
Article 4: Multiple Article 4 Directions around office-to-residential, demolition, and shopfront changes.
We check whether your City of London garage conversion needs planning permission or qualifies as Permitted Development — most integral garages don't need planning.
Full laser-measured survey of the existing garage, plus adjacent rooms where walls are being removed.
Existing and proposed floor plans, elevations and sections at 1:50 — full council-ready specification.
Garage conversions must meet current energy-efficiency standards — upgraded insulation, glazing U-values, heating specification.
Steel beam and padstone design where garage doors are replaced with walls and windows, plus any load-bearing wall removals.
Full Plans submission to City of London Corporation Building Control or an approved inspector with inspections coordinated through to completion certificate.
Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Direct answers to the questions City of London homeowners ask every week about garage conversion drawings.
Start a free quote →Most integral garage conversions in City of London do not require planning permission — they're classed as an internal alteration, which is not development under the TCPA 1990. However, if the conversion materially alters the external appearance (new windows, raising the roof), planning permission may be required. Detached garage conversions to habitable use always need planning. Article 4 Directions in City of London may also affect eligibility. We confirm the planning route before quoting.
Our fixed-fee architectural package for a City of London garage conversion starts at £995 (planning assessment + building regs + structural). Typical build costs in City of London are £15,000–£25,000 for an integral garage or £20,000–£40,000 for a detached garage, depending on insulation, flooring, and services.
Yes — every garage-to-habitable conversion in City of London needs Building Regulations approval. Key requirements include minimum insulation values (Part L), fire safety and escape routes (Part B), damp-proofing (Part C), ventilation (Part F), and structural adequacy if removing the garage door opening.
Typically yes — a well-executed garage conversion in City of London adds 10–15% to property value and costs far less per square metre than an extension. In areas where parking is not at a premium, converting an underused garage is one of the most cost-effective ways to gain living space.
A standard integral garage conversion in City of London typically takes 4–6 weeks to build once drawings are approved. Our architectural package takes 3–4 weeks from instruction to Building Control submission. Total timeline: approximately 3–4 months from initial survey to completion.
We cover every London borough with the same fixed-fee approach. If your property sits on a boundary, here are the neighbouring options.
We cover every architectural technology service in City of London with one chartered team.
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Free quote in 60 seconds. Fixed fee from £995. MCIAT chartered.
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