Greater London · Est. building contractor
BuiltProperly — London construction & refurbishment contractor
Loft conversions, extensions, whole-house renovations and commercial fit outs — delivered by one directly managed team across every London borough.
On site · Directly employed trades
Real tradeson real sites
Bricklayers, carpenters, plasterers, electricians and site managers working to a single programme — scaffold up to final snagging.
Services
Every trade a London building project needs, coordinated under one contract.
Loft Conversions
A dormer loft conversion creating a light-filled top-floor suite with steel framed glazing and full insulation upgrade.
02House Extensions
A single-storey rear extension opening the ground floor onto the garden with slimline sliding doors.
03Full House Renovations
A whole-house refurbishment stripped back to brick and rebuilt with new services, joinery and finishes.
04Kitchen Renovations
A bespoke kitchen with handleless cabinetry, stone worktops and integrated appliance wall.
05Bathroom Renovations
A spa-style bathroom with large format porcelain, walk-in shower and underfloor heating.
06Basement & Cellar Conversions
A cellar dig-out and tanking scheme turning dead storage into habitable living space.
07Indoor Swimming Pools
An indoor pool build with tiled tank, plant room, dehumidification and full environmental control.
08Outdoor Swimming Pools
An outdoor pool with concrete tank, stone coping, heating, cover system and landscaped surround.
09Garden Design
A garden redesign with porcelain terrace, raised planters and layered exterior lighting.
10Landscaping
Hard and soft landscaping with retaining walls, levels correction and planting scheme.
11Driveways
A permeable resin-bound driveway with new drainage and front boundary works.
12Roofing
Full roof strip and re-covering in natural slate with new leadwork and insulation.
13Brickwork
Facade repair, repointing in lime mortar and rebuilt parapet detail.
14Structural Steel
Structural steel installation removing load-bearing walls to open the ground floor plan.
15New Builds
A new-build infill dwelling from foundations to handover on a tight urban plot.
16Commercial Refurbishments
A commercial strip-out and refit delivered in phases around trading hours.
17Office Fit Outs
A Cat B office fit out with glazed meeting rooms, acoustic treatment and new services.
18Shop Fronts
A new shopfront in powder-coated steel with toughened glazing and illuminated signage.
19Restaurants
A restaurant build with commercial kitchen, extract system and bespoke front-of-house joinery.
20Retail Units
A retail unit fit out with display joinery, track lighting and durable flooring.
21Schools
An education refurbishment completed to programme within the summer holiday window.
22Plumbing
Full re-pipe with new manifolds, pressurised hot water and modern sanitaryware.
23Electrical
Full rewire with new consumer unit, lighting design and smart controls.
24Gas Installation
Gas supply upgrade and appliance installation certified on completion.
25Heating
New heating system with zoned controls, upgraded emitters and full commissioning.
26Air Conditioning
Concealed air conditioning with ducted units and discrete linear grilles.
27Carpentry
Bespoke joinery — wardrobes, panelling and a hardwood staircase built on site.
28Flooring
Engineered oak herringbone flooring laid over a levelled and insulated substrate.
29Tiling
Large format tiling with laser-set levels and minimal grout junctions.
30Plastering
Full re-plaster with new beading, skim finish and decoration-ready walls.
31Painting & Decorating
A full decoration package with sprayed joinery and hand-finished woodwork.
32Water Damage Restoration
Escape-of-water reinstatement including drying, strip-out and full rebuild.
33Fire Damage Restoration
Post-fire strip-out, structural repair and complete internal reinstatement.
34Damp Proofing
Damp survey, injected DPC, tanking and re-plastering with breathable finishes.
Transformation
Before
& After
Drag the handle to see how a tired London interior becomes a finished space. Every portfolio entry carries its own before-and-after comparison.
Browse 208 case studies
Selected work
All projects →
SW3Loft Conversions · 2019
Chelsea Loft Conversion
A dormer loft conversion creating a light-filled top-floor suite with steel framed glazing and full insulation upgrade. Sample case study set in Chelsea (SW3).
View project →
SW17Air Conditioning · 2021
Tooting Air Conditioning
Concealed air conditioning with ducted units and discrete linear grilles. Sample case study set in Tooting (SW17).
View project →
HA1Shop Fronts · 2023
Harrow Shop Front
A new shopfront in powder-coated steel with toughened glazing and illuminated signage. Sample case study set in Harrow (HA1).
View project →
SE13Garden Design · 2025
Lewisham Garden Design
A garden redesign with porcelain terrace, raised planters and layered exterior lighting. Sample case study set in Lewisham (SE13).
View project →
W4Fire Damage Restoration · 2020
Chiswick Fire Damage Restoration
Post-fire strip-out, structural repair and complete internal reinstatement. Sample case study set in Chiswick (W4).
View project →
N1Gas Installation · 2022
Islington Gas Installation
Gas supply upgrade and appliance installation certified on completion. Sample case study set in Islington (N1).
View project →208
Portfolio case studies
60+
London postcode districts
33
Trades under one roof
100%
Directly managed sites
AI project assistant
Ask
Foxter AI
Describe your project and get instant guidance on scope, planning, sequencing and realistic London cost ranges — before you ever pick up the phone.
AI guidance is indicative only — a site visit is needed for a fixed price.
Frequently asked
Questions
answered
The things London homeowners ask us most. Anything else — ask the AI assistant or send us a message.
How much does a loft conversion cost in London?+
A rear dormer typically lands between £50,000 and £75,000, and an L-shaped or mansard conversion between £70,000 and £110,000, depending on structure, stairs and finish. Figures are indicative — we price after a site visit.
Do I need planning permission?+
Many lofts and rear extensions fall under permitted development, but conservation areas, flats and larger footprints usually need a full application. We check the constraints for your postcode before any design work starts.
How long will my project take?+
A bathroom is roughly 2–3 weeks, a kitchen 4–6 weeks, a loft conversion 8–12 weeks and a full house refurbishment 16–26 weeks, measured from scaffold up to snagging.
Which areas of London do you cover?+
Every Greater London borough — north, south, east, west and central — plus the immediate commuter belt for larger contracts.
How do you handle payments?+
We work to a fixed price with a staged payment schedule tied to agreed milestones. Nothing is invoiced ahead of the work it covers.
Do you manage building control and party wall matters?+
Yes. We coordinate structural calculations, building control sign-off and party wall notices as part of the contract, and can introduce a surveyor where one is needed.
Are the portfolio projects real client jobs?+
The portfolio is a library of illustrative concept projects showing the type, scale and finish of work we deliver. They are not records of specific completed client contracts.
What guarantees do you give?+
Workmanship is covered by our own guarantee, with manufacturer warranties passed on for materials, appliances and roofing systems.
Start your project
Send us the postcode, the scope and a rough timeline. We'll come back with a realistic programme and a fixed price.
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