A finished loft conversion bedroom with a roof window

Loft Conversions In London, Priced On Your Roof

Dormer, hip to gable, mansard and rooflight conversions. Send the roof type and the plan for the space and we route it to a specialist.

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Loft Conversions In London

A loft conversion is the cheapest square metre most London houses will ever add, which is why so many of them have one. It is also the job where the quote moves most between houses, because the roof you have decides the conversion you can get.

Head height, roof pitch, where the stairs can land and whether you are semi-detached or mid-terrace change the answer before anyone talks about finishes. Tell us what the property is and we pass it to someone who converts that roof type. Where the floor below needs opening up too, it usually runs with a house extension.

A finished loft conversion bedroom with a roof window

The Conversion Types

Which one you can have is mostly decided by your existing roof and your planning position, not by preference. A specialist will tell you which are actually available to you at the first visit.

  • Rooflight conversion where head height already works
  • Rear dormer for full-height usable floor area
  • Hip to gable on a semi or an end terrace
  • Mansard where the roof has to be rebuilt
A finished loft conversion bedroom with a roof window

Structure, Stairs And Head Height

The part homeowners underestimate is below the loft. New steels carry the floor, the staircase has to come from somewhere, and the room it comes out of is usually a bedroom you were keeping.

  • Steel beams and a new structural floor
  • A compliant staircase with headroom at the top
  • Fire doors and escape route through the house
  • Insulation and ventilation to current regulations
A finished loft conversion bedroom with a roof window

Permission And Party Walls

Plenty of loft conversions go ahead under permitted development, but the exceptions are common in London: flats, conservation areas, and anything on the front roof slope. Attached houses also bring the neighbours into it.

  • Permitted development limits on volume and position
  • Full planning where the property is excluded
  • Building regulations approval either way
  • Party wall notices to attached neighbours

How A Loft Conversions Enquiry Runs

  1. A completed rear dormer on a London terraced house

    Tell Us The Roof

    House type, roughly when it was built, and what you want the loft to become. A photo from the street and one from inside the loft hatch tell a specialist a great deal.

  2. Steel beams and new floor joists installed in a loft

    We Match The Type

    Dormer work, mansards and hip to gable conversions are different builds. The enquiry goes to a firm that does yours.

  3. A loft conversion at plasterboard stage with the stair opening framed

    They Survey And Price

    Head height gets measured properly and the stair position gets resolved before a number is given. The quote comes from them, direct.

Find Out What Your Loft Will Take

Send the property type and what you want up there, and a conversion specialist will come back to you.

Quick Quote Online

The Kind Of Work That Comes Through

Surveying, structure, extensions and finishing across London property.

Where We Work

RCRO Building works across London and the towns and villages within 20 miles.

Towns And Villages

  • London
  • City of Westminster
  • Islington
  • Chelsea
  • Battersea
  • Holloway
  • Brixton
  • Peckham
  • Fulham
  • Archway
  • Shepherds Bush
  • Canary Wharf
  • Stamford Hill
  • Willesden
  • Cricklewood
  • Putney
  • Streatham
  • Stratford
  • Chiswick
  • Catford
  • Canning Town
  • Acton
  • Wimbledon
  • Tottenham
  • Finchley
  • Leytonstone
  • Walthamstow
  • Mitcham
  • Wembley
  • Beckenham
  • Brent
  • Morden
  • Edmonton
  • Eltham
  • Croydon
  • Barking
  • Ilford
  • Carshalton
  • Enfield Town
  • Chingford
  • Greenford
  • Harrow
  • South Croydon
  • Hounslow
  • Welling
  • Southall
  • Thamesmead
  • Heston
  • Surbiton
  • Sutton
  • Becontree
  • Purley
  • Borehamwood
  • Ewell
  • Bexley
  • Hayes
  • Dagenham
  • Feltham
  • Banstead
  • Ruislip
  • Epsom
  • Cheshunt
  • Esher
  • Romford
  • Dartford
  • Watford
  • Uxbridge
  • North Watford
  • Staines
  • Leatherhead
  • Hatfield
  • Hoddesdon
  • Redhill
  • St Albans
  • Grays

building work in London

Loft Conversions Questions

Can every house be converted?

No. The usual blocker is head height: measure from the ceiling joist to the ridge, and if you are much under 2.2 metres a standard conversion will not work without altering the roof. Mansard and hip to gable conversions get round it by rebuilding part of the structure.

Do I need planning permission for my loft?

Often not, if the property is a house and the work stays inside permitted development. Flats always need permission, and so does anything on a front roof slope or in a conservation area. Building regulations apply in every case.

How long does a loft conversion take?

The build is usually the shorter half. Design, structural calculations, approvals and party wall notices run ahead of it, and on an attached property the notices alone have statutory notice periods to serve.

What happens if the roof height is too low?

You raise the roof or you drop the ceiling below. A mansard or a hip to gable rebuild creates the height; lowering the ceilings of the floor underneath is the other route and means redecorating those rooms.

Do I need a party wall agreement?

If you are semi-detached or in a terrace and the work touches the shared wall, which steels for a loft almost always do, then yes. Notices have to be served on the adjoining owners before work starts.

What is included in a fixed price quote?

Ask specifically about the staircase, the decoration, the en-suite if you want one, and the making good downstairs. Those four are the usual exclusions and together they are not a small number.

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Foundations, excavation, drainage, underpinning and structural alterations, matched to a groundwork contractor near you.

Quick Quote Online For A Loft Conversion

Tell us about the job and we will put you in contact with a trade who does that work in your area.

  • Costs you nothing and commits you to nothing
  • Detail helps: drawings, photographs, a rough budget
  • The trade quotes you directly, not us

Quick Quote Online

Takes under a minute.

RCRO Building is a lead generation service. We do not carry out the work: we put you in contact with a trade who does.

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