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Sealants and Estremoz marble
We supply what we use. Silicone sealants and adhesives by the box, and marble from the Estremoz quarry region in Portugal, cut to size for kitchens, bathrooms and stairs.
Ask about supply
Property modifications & alterations
Extensions, lofts, basements and full refurbishment across West London.
Ogival is a design-and-build contractor for homes and commercial premises, run by Emanuel Franco, with 25 years in London construction. Drawings, planning, structural work and every trade under one roof, and a written schedule of works and payments before anyone lifts a tool.
- 25years of London construction
- 31trades and services under one contractor
- 100%of drawings, planning and calcs in-house
- £0for a site visit and a written quote
Listed, vetted and reviewed on
- TrustATrader Vetted and approved
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4.5 from 6 reviews
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Professional profile
- Yell 5.0 from 2 ratings
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5.0 from 12 reviews
Ogival Ltd, registered in England & Wales no. 15191703 · Public liability insured · NICEIC registered electrical work · Gas Safe registered plumbing and heating
What we build
Ten things we're asked for most, and nine more in the menu.
A renovation needs a structural engineer, a plumber, an electrician, a tiler and a carpenter. Calling one company for all of it is the whole point — and it works the same way on a shop, an office or a showroom as it does on a house.
Outside
Garden & landscaping
Structural
House extensions
Structural
Loft conversions
Structural
Basements
Refurbishment
Kitchens
Refurbishment
Bathrooms
Refurbishment
Tiling & stone
Refurbishment
Carpentry & joinery
Water & damp
Damp proofing & tanking
Commercial
Shops, offices & fit-out
Everything else
Twenty-one more services
Design & drawings · Project management · Renovations & refurbishment · Groundworks · Plumbing & heating · Electrical · Solar & heat pumps · Air conditioning · CCTV & alarms · Drainage · Painting & decorating · Decorative finishes · Structural alterations · Underpinning · Lifts
See all thirty-one →
Plan your project
What are you thinking of doing?
Pick the closest one. We'll show you what the job actually involves, roughly how long it runs, and what we handle so you don't have to.
Side return, rear or wrap-around extension
The most common job we're called for, and the one where the ground conditions and the party wall decide the programme — not the kitchen you've picked.
- Typically on site
- 12–20 weeks
- Permissions
- Permitted development or full planning, plus building regs
- Usually needs
- Party wall award, structural steel, new drainage run
We handle drawings · planning application · structural calculations · groundworks · steels · roof and glazing · first and second fix · kitchen installation · decorating
Dormer and mansard loft conversions
The cheapest square metres you will ever add to a London house, provided the head height and the staircase work. We check both on the first visit.
- Typically on site
- 8–14 weeks
- Permissions
- Often permitted development; mansards usually need planning
- Usually needs
- Steels into the party walls, new staircase, fire-rated escape
We handle feasibility and head-height check · drawings · structural calculations · steels · dormer build · staircase · insulation · en-suite · building control sign-off
Basement conversions, underpinning and tanking
The most technical work we do and the least forgiving. Water has to be designed out from the start, which is why the waterproofing decision comes before the floor plan.
- Typically on site
- 16–28 weeks
- Permissions
- Planning in most boroughs, building regs, party wall award
- Usually needs
- Underpinning, cavity drain membrane, sump and pump, new lighting
We handle structural engineering · party wall process · excavation and muck away · underpinning · tanking and drainage · fit-out · no vehicle access required
Full refurbishment, kitchens and bathrooms
Whole-flat refurbishments, single rooms, or the awkward jobs other firms turn down. If the property is occupied we phase it so you keep a kitchen and a bathroom.
- Typically on site
- 6–14 weeks
- Permissions
- Rarely planning; building regs for electrics, gas and structure
- Usually needs
- Rewire, replumb, plaster, joinery, floors, decoration
We handle strip out · rewiring · plumbing and heating · plastering · tiling and stone · bespoke joinery · flooring · painting · final clean
Timescales are typical for the work we do in West London and are confirmed properly at survey, once we've seen the property.
Why people hire us twice
Most building jobs go wrong in the gaps.
Between the architect and the builder. Between the plumber and the tiler. Between what was quoted and what was actually built. Ogival is set up to close those gaps — one company, one point of responsibility, one schedule you can hold us to.
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01
You get told what it will cost
A written schedule of works and payments, stage by stage, so you can see where the money goes and where it can be saved before you commit.
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02
The drawings are ours too
Architectural and structural drawings, planning applications, building regs and structural calculations, all in-house.
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03
Our own trades, not a rotating cast
The same faces are in your house on week six as on week one. That is unusual, and it is the reason clients come back.
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04
We tell you when it's bigger than it looks
Wet rot under a bathroom, a leak behind a render, movement in a wall. We would rather open it up, show you and re-price than paper over it.
How a project runs
Five stages. You'll always know which one you're in.
- 01
Free site visit
We walk the property with you and flag anything structural, damp or drainage-related early.
- 02
Drawings and calculations
Architectural and structural drawings, planning and building regs where the job needs them.
- 03
Schedule of works
A written breakdown of works and a payment schedule tied to stages, not to dates.
- 04
Build stage
One site manager, one point of contact, and a tidy site at the end of every day.
- 05
Handover and snagging
Snagging done properly, certificates handed over, and we answer the phone afterwards.
What clients say
Word of mouth, written down.
I have used this company for years for many different jobs including painting my whole house, tiling my bathroom, laying flooring, astroturfing my garden and putting up fences. Very knowledgeable, professional and polite. If you want a company that care, I'd stick with Ogival.
Ogival has a friendly and professional team. Our new bathroom looks great and we're very happy with the choice of products used and the quality of their work.
Great communication, polite workers and excellent tidying up afterwards. Definitely recommend.
They were professional, polite, easy to get hold of and easy to deal with. They did a great deal of work for me including building an internal wall, moving a bathroom, carpentry, electrics and plumbing, they re-rendered my balcony, relaid the decking and repainted the whole flat.
I have used this company for years for many different jobs including painting my whole house, tiling my bathroom, laying flooring, astroturfing my garden and putting up fences. Very knowledgeable, professional and polite. If you want a company that care, I'd stick with Ogival.
Ogival has a friendly and professional team. Our new bathroom looks great and we're very happy with the choice of products used and the quality of their work.
Great communication, polite workers and excellent tidying up afterwards. Definitely recommend.
They were professional, polite, easy to get hold of and easy to deal with. They did a great deal of work for me including building an internal wall, moving a bathroom, carpentry, electrics and plumbing, they re-rendered my balcony, relaid the decking and repainted the whole flat.
He replaced eroded bricks and once the wall was dry replastered ready to decorate. Work was delayed because he uncovered wet rot in the ceiling joists. He fixed the cause of those leaks. Throughout this saga Ogival has been professional, reliable, extremely thorough and honest.
I found them really helpful and honest. They went out of their way to help. They also finished on time and left the place spotless.
I decided to go with them as I liked their ideas and Emanuel knew what he was talking about. He made floor to ceiling units, redecorated my room and laid laminate flooring. I have no hesitation in recommending them.
Good finishing.
He replaced eroded bricks and once the wall was dry replastered ready to decorate. Work was delayed because he uncovered wet rot in the ceiling joists. He fixed the cause of those leaks. Throughout this saga Ogival has been professional, reliable, extremely thorough and honest.
I found them really helpful and honest. They went out of their way to help. They also finished on time and left the place spotless.
I decided to go with them as I liked their ideas and Emanuel knew what he was talking about. He made floor to ceiling units, redecorated my room and laid laminate flooring. I have no hesitation in recommending them.
Good finishing.
Read them in full on MyBuilder, TrustATrader and Houzz.
Not sure where to start?
Send us a photo. We'll tell you what it takes.
You don't need drawings to get a straight answer. Photograph the room, the garden or the damp patch on your phone, send it over, and Emanuel will come back with what the job actually involves, roughly what it costs, and whether it's one for us.
- 01
Photograph it where it is
One wide shot of the whole space and one close-up of the bit that worries you. Daylight if you can.
- 02
WhatsApp or email it over
One tap from your phone. Add your postcode and roughly what you're hoping to do with the space.
- 03
Get an answer back the same day
What's involved, what it's likely to cost, and whether it needs a site visit. No charge, no pressure, no salesman.
A photo gets you an experienced opinion, not a fixed quote. Where it genuinely matters — structural work, damp with a cause we can't see, anything below ground — we'll tell you a site visit is the right next step.
Cleared, dug out, retained, paved and turfed
6 weeks
Steels, dormer, insulation, staircase and second fix
11 weeks
Where we work
Thirty minutes from the yard, most days.
We're based in W10, ten minutes from Notting Hill and twenty from Chelsea. Most of our work sits inside the first ring — close enough that the same team is on your job every morning without an hour on the North Circular first.
- Ogival, W10 5DW
- Everyday patch, within 10 miles
- Regular work, 10 to 20 miles
- By arrangement, out to 30 miles
Areas we're called to most
- Builders in Kensington
- Builders in Chelsea
- Builders in Notting Hill
- Builders in Hammersmith
- Builders in Fulham
- Builders in Westminster
- Builders in Maida Vale
- Builders in Shepherd's Bush
- Builders in Kensal Green
- Builders in Chiswick
- Builders in Acton
- Builders in Ealing
- Builders in Camden
- Builders in Richmond
- Builders in Barnes
- Builders in Wandsworth
Outside this? Ask anyway. We'll tell you honestly whether we're the right firm for the journey.
Beyond the build
Two things we also sell.
Start a project
Tell us what you're planning.
A site visit and a written quote cost nothing. If the job isn't right for us, we'll say so and point you somewhere better.
- Free, no-obligation site visit and written quote
- You deal with Emanuel, not a sales rep
- Drawings and planning can be handled for you
- Covering Kensington, Chelsea, Hammersmith and Fulham