A bedroom suite of your own
A comfortable principal bedroom with an ensuite, dressing space and thoughtfully designed eaves storage.
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LOFT CONVERSION BUILDERS IN LONDON · ESTABLISHED 2010
More space upstairs.
More space upstairs.
Less disruption downstairs.
Transform your roof space into a properly planned bedroom suite, home office or additional living area — with experienced construction management from the first review to the final finish.
Dormer · Mansard · L-shaped · Hip-to-gable · Rooflight conversions
Established in 2010Projects from around £50,000London construction specialists
Established experience.
Carefully managed construction.
Carefully managed construction.
2010Established in London
£25m+Project value delivered
300+Projects completed
4.9/5Published customer rating
MORE ROOM FOR LIVINGMake more of the home
Make more of the home
you already love.
A loft conversion can create an entirely new level of accommodation while keeping the home, neighbourhood and garden you already enjoy. The real opportunity lies in the layout: practical headroom, a natural staircase, useful storage and daylight exactly where you need it.
Space that adapts to you
A dedicated home office, guest room, children's accommodation or a more private space for family life.
Good design makes the differenceHeadroom·Stair position·Natural light·Insulation·Integrated storage
A GENUINE LOFT CONVERSION REVIEW
A client's experience, in their own words.
Completed loft conversion and bathroom renovation · Harrow · Customer review published on MyBuilder
“Although not the cheapest quote we obtained, they were highly professional, kept the noise down and cleaned up after themselves.”
— Harrow loft conversion clientRead the full review on our website ↗COMPLETED CONSTRUCTION
The work is the proof.
Our portfolio includes roof conversions undertaken within comprehensive residential projects. These examples show how we coordinate structural changes, new accommodation, building services and finishes across different scales of work.
Mansard loft conversion
Camden, NW5
A mansard loft conversion delivered alongside a side-infill extension and major refurbishment. Roof-level accommodation, structural alterations and interior finishes were coordinated as one project.
Explore the Camden project ↗
Loft conversion and whole-house works
60 Wavendon Avenue
A whole-house transformation combining a loft conversion, wraparound extension and comprehensive refurbishment. The work demonstrates coordinated delivery across the roof and the existing accommodation.
View the Wavendon case study ↗
Loft conversion and major renovation
57 Sutton Lane South
Substantial residential construction incorporating a loft conversion, structural work, extensions and a comprehensive renovation. Successful delivery led to a subsequent appointment at Wavendon Avenue.
View the Sutton Lane case study ↗Completed projects showing loft conversions delivered as part of wider residential construction work.
Our construction credentials
FIND YOUR CONVERSION TYPE
Five ways to make room upstairs.
Roof geometry, available height, surrounding properties and planning constraints influence which conversion will work. Explore the principal options, then tell us what you have in mind.
REAR DORMER
More height where it matters.
A rear dormer creates useful internal floor area and more practical ceiling height, often making space for a good bedroom and an ensuite.
Often considered forLondon terraced and semi-detached homes.
Important design pointsHeadroom, stair position, external finish and glazing.
Mansard loft conversions
Mansard alterations can create generous usable space and a coherent roof form, particularly on suitable period properties. They require careful structural and planning coordination.
L-shaped dormer conversions
An L-shaped conversion joins the main rear roof addition with an additional roof volume over the outrigger, making room for larger bedrooms, bathrooms or circulation.
Hip-to-gable loft conversions
Converting a sloping roof end to a gable can substantially increase usable width. It is frequently considered with a rear dormer for a larger accommodation layout.
Rooflight loft conversions
Where headroom and roof geometry permit, a rooflight conversion can create habitable accommodation with less alteration to the external roof form.
Explore the different roof configurations. The suitable approach depends on your property, space requirements and planning constraints.
CONSTRUCTION AROUND AN EXISTING HOME
A planned build makes everyday life easier.
With suitable access and sequencing, much of the roof structure and new accommodation can be constructed externally before the loft is connected to the house. We plan protection, access and the intrusive internal stages around the property and proposed works.
Access and protection
Scaffolding, material handling and suitable temporary roof protection are assessed before roof alterations commence.
Roof and structural works
Roof alterations, steelwork, dormer or mansard construction and building-envelope works follow a coordinated sequence.
Connection and finishes
Staircase installation and integration with occupied rooms are planned carefully. Living arrangements are agreed for each project.
Temporary roofs and external access depend on scope and site conditions. We review these requirements with the homeowner before agreeing the construction programme.
COSTS & INVESTMENT
A useful starting point for your budget.
Typical projects start around £50,000. The right budget depends on the roof, the structure and the finish.
A rooflight conversion, a rear dormer and a substantial mansard involve different roof works and different amounts of new living space. These benchmarks help with early discussions; a detailed quotation is prepared against your design and specification.
ENTRY-LEVEL GUIDE£50,000+
Rooflight and more straightforward conversion projects where the existing roof configuration is suitable.
REAR DORMER GUIDE£60,000+
An indicative starting point for a straightforward rear dormer, subject to the works and specification.
LARGER ROOF ALTERATIONS£90,000+
A preliminary guide for certain L-shaped and mansard proposals; extensive or premium schemes can cost substantially more.
Starting budget guides, not fixed quotations or offers. Applicable VAT, design and professional fees, roof protection, specification and exclusions will be identified when reviewing your project. Prices may be substantially higher where the scope requires it.
Temporary roof & accessScaffolding, coverings, protection and site logistics.
Structural steelworkExisting roof arrangement, new loads and supports.
Roof covering & glazingDormer cladding, roof finish, windows and rooflights.
Bathrooms & joinerySanitaryware, fitted storage and quality of finishes.
Existing propertyHeadroom, access, services and opening-up conditions.
What our quotation sets out: defined construction scope, specified products and allowances, contractor and client responsibilities, exclusions, programme assumptions and the proposed payment arrangements.
PROJECT READINESS
Have drawings? We can assess the next step.
Approved planning drawings are an important milestone. Construction pricing also depends on structural details, Building Regulations information, staircase design, specification and how the existing house will be protected and connected.
Ready for a contractor
If you have a tender pack with construction drawings and structural information, send us the plans. We'll review the scope, clarify key assumptions and discuss a quotation.
Planning or drawings underway
Tell us what has been designed and which approvals remain. We can discuss the technical information and professional input needed before construction.
Early ideas
We can talk through likely conversion options and the practical route to developed drawings, while keeping the proposed investment and timescale in mind.
Construction-ready projects may be able to mobilise in around 2–4 weeks, subject to current availability, approved information and site arrangements. Many domestic loft conversions require around 7–20 weeks of construction; larger schemes are assessed individually.
SPACE, LIGHT & DETAIL
The finish makes it feel like home.
The best loft conversions use their geometry intelligently: carefully placed glazing, usable headroom, fitted wardrobes, considered lighting and a well-integrated stair. Where an ensuite is included, waterproofing, ventilation and sanitaryware detailing matter just as much.
These choices are discussed early so that electrical positions, joinery, plumbing and the overall finish work together.
Completed bathroom · 60 Wavendon Avenue, Chiswick
OUR CONSTRUCTION PROCESS
A clear programme from appointment to completion.
We review the scope, coordinate procurement and establish who is responsible for design information, temporary works, inspections and product choices. The project team manages work on site and keeps you informed of the decisions that affect programme and cost.
Review & quotation
Survey and available drawings, tender scope, specification and key construction constraints.
Agreement & mobilisation
Written contract, agreed payment and valuation arrangements, programme and access plan.
Structural works & fit-out
Roof alterations, inspections, services, partitions, joinery and internal finishes coordinated in sequence.
Inspection & handover
Relevant compliance documentation, snagging, practical completion and contractual aftercare.
CLEAR ANSWERS
The questions that matter before work begins.
From feasibility and planning to temporary protection and payment arrangements, these are the practical points we discuss with clients planning a loft conversion.
Is my loft suitable for conversion?
Suitability depends on existing roof height and form, available staircase space, supporting structure, layout and planning constraints. Some properties need extensive alterations to achieve practical headroom. Drawings or a site review allow us to assess the most viable options.
Which type of loft conversion would work for my property?
Rear dormers often improve headroom; mansards can create more substantial upper-floor accommodation; L-shaped layouts can suit certain homes with rear outriggers; hip-to-gable alterations can enlarge a hipped roof; and rooflights can suit roofs with sufficient existing volume. The choice depends on your property and the relevant permissions.
How much will my loft conversion cost?
Our initial budget guide begins at around £50,000, with a straightforward rear dormer sometimes starting around £60,000 and certain larger L-shaped or mansard schemes around £90,000 or more. These are initial budget guides. Your quotation will define scope, allowances, exclusions, VAT treatment and payment terms.
How long will construction take, and when could you start?
Many domestic projects require roughly 7–20 weeks on site, depending on roof works, bathroom and finish specification, access, approvals and procurement. Where drawings and permissions are ready, commencement can sometimes be arranged in 2–4 weeks, subject to current capacity. We prepare a project-specific programme before mobilisation.
Can we stay in the house during the loft conversion?
Often, yes. Where site conditions permit, scaffolding and external access allow much of the roof and loft construction to proceed before the staircase connection and other internal works. We agree protection, access, noise, services and any temporary relocation requirements in advance.
Do you use a temporary roof?
Temporary weather protection can be appropriate for substantial roof alterations or exposed existing accommodation. The arrangement depends on the roof design, construction sequence, weather exposure and available access. We assess the protection required for each project.
Will I need planning permission?
Some house loft conversions can fall within Permitted Development rights, subject to conditions and restrictions. Other projects require planning approval, especially where roof alterations, conservation constraints or property status affect the proposal. Flats generally do not benefit from the same householder Permitted Development rights. We can discuss the relevant approval route with your design team.
What about Building Regulations and fire safety?
A loft converted to habitable accommodation must satisfy applicable Building Regulations. Design and works commonly involve structure, fire protection and escape arrangements, insulation, ventilation, stairs and electrical safety. We coordinate construction against the agreed technical information and relevant inspections.
Will a Party Wall agreement be required?
Party Wall etc. Act notices or agreements may be relevant to works affecting shared walls or structures, including certain loft steel installations. Requirements depend on the design and legal relationship of the structures. A party wall surveyor can advise where necessary.
Can you build an ensuite, dressing room or fitted wardrobes?
Yes, where the space, plumbing and ventilation arrangements allow. We can coordinate bathroom installation, lighting, flooring, bespoke or fitted joinery, electrical fittings and decorating as part of the defined construction scope.
What do you need to prepare an accurate quotation?
Ideally a complete tender package: architectural and Building Regulations drawings, structural calculations and details, a specification or schedule of finishes and relevant planning information. We can also discuss preliminary budgets when the design is still developing, with clear assumptions.
Why might quotations from different contractors vary?
Quotations may differ in the assumed scope, temporary roof protection, steelwork allowances, roof coverings, glazing, bathroom specification, client-supplied items and provisional sums. We aim to clearly identify what our price covers so that you can compare proposals on a consistent basis.
How are deposits, valuations and changes managed?
The deposit and payment schedule are agreed in writing before work begins. Interim valuations may be weekly, fortnightly or monthly depending on the project. Changes are considered through the agreed variation process, including any effect on cost and time.
What happens at completion?
We coordinate the completion inspection, relevant documentation, snagging and handover under the contract. Defects and aftercare arrangements follow the contractual provisions and any applicable product warranties.
LET'S TALK ABOUT YOUR HOME
Tell us about your loft conversion.
Your drawings, proposed accommodation, planning stage, budget and preferred start date help us understand the project. Complete the form below and our team will review the details and explain the appropriate next step.
PROJECT ENQUIRY
Tell us what you're planning.
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