House Extensions & Loft Conversions · West London
This is the home you imagined. We build it.
Rear extensions. Side extensions. Double storey and wrap around extensions. Hip-to-gable, dormer, and mansard loft conversions. One fixed price. One named project manager. Directly employed trades throughout. Serving TW, W, UB, HA and KT postcodes.
- TW
- W
- UB
- HA
- KT
- RG
- Berkshire
- Surrey
Book Your Consultation
Fill this form. Our team will get in touch with you within 24 hours.
By submitting this form you agree to be contacted by Anamorphic & Co. regarding your enquiry.
enquiries@anamorphicandco.co.uk | +44 20 8068 2000
- Fixed-price contracts. No variations.
- Named Project Manager
- Directly Emplyed Trades. No Subcontractors.
- 8500 sq ft showroom.
- See Finishes Before You Commit
What we build
Every project. From the structure to the final room.
We do not hand over at the structural stage. Anamorphic takes every project from planning application and foundations through to interior fit-out with CasaVera, under one contract, with one team.
House Extensions, West London
A rear extension that opens your kitchen into the garden. A side extension that reclaims the space beside your house. A double storey extension that adds a bedroom above and a living room below. A wrap around extension that transforms the entire back of your home.
Your project has one price. It does not change. Every extension is delivered under a fixed-price contract with your named project manager accountable from ground break to handover. We serve TW, W, UB, HA and KT postcodes across West London.
Loft Conversions, West London
A hip-to-gable loft conversion on your 1930s semi. A dormer loft conversion that opens the rear roof plane into a full master bedroom with ensuite. A mansard loft conversion on your terraced property that gains the maximum space the structure allows. A loft conversion and extension combined, under one contract.
We handle planning. We manage building regulations. We carry out the structural work and the full interior fit-out. We are the loft conversion specialist West London homeowners appoint when the result has to be right.
Full Refurbishment & Remodel
Some properties need more than an extension. A full strip-out, structural remodel, extension, and complete CasaVera interior fit-out. Marble floors. Lacquer kitchens. Bespoke joinery. Designed around how you live.
Anamorphic takes full-scope projects from the initial survey to the final furnished room. You make one decision: who to trust with your home. Then we handle everything else.
CasaVera Interiors
Every Anamorphic project has the option to continue into a full CasaVera interior fit-out. Bespoke kitchens. Bathrooms specified to your exact brief. Wardrobes built for your space, not adapted from a catalogue.
Come and see it in person. 8,500 sq ft of bespoke interiors across 16 product lines, all live, all touchable, at our West London Experience Centre. The price reflects what it costs to make. Not the retail chain around it.
How it works
From the first conversation to the final furnished room.
Every project follows the same accountable process. You know what happens next at every stage. Nothing happens without your sign-off.
Site Consultation
Your named project manager visits. We listen. We assess. No obligation.
Fixed Price Proposal
One price. Fully itemised. No provisional sums. No hidden variations.
Planning & Regs
We handle all planning applications and building regulation sign-off.
Build & Interior
Our directly employed trades carry out every stage. No subcontractors.
Handover & After-Care
12 months of after-care, standard. We do not disappear at handover.
Why Anamorphic
What serious clients expect. And get.
Your project has one price. It does not change.
Every project is priced under a fixed-price contract before work begins. There are no provisional sums, no retrospective variations, no surprises on your invoice. If we discover something during the build that we missed, that is our cost to manage, not yours.
One team. No subcontractors. Ever.
See the finishes before you commit.
One named project manager. One number.
Planning handled. Sign-off included.
We manage your planning application and all building regulation sign-off as part of the contract. You do not need to engage an architect separately, coordinate submissions, or chase the council. We do all of it.
Foundations to Furnishings. One contract.
Anamorphic is the only West London construction firm that delivers from structural groundwork through to fully furnished interior rooms under a single contract. No gap between the builder and the interior designer. No gap between the structure and the finish.
Experience Centre
Come and see it before you decide.
8,500 sq ft of live, touchable interiors across 16 product lines. Kitchens, bathrooms, wardrobes, joinery, flooring, and lighting. All manufactured to spec. All on display in West London.
No other firm can offer this
Sixteen product lines. One vision. Yours.
Most extension builders and loft conversion companies hand you a brochure and ask you to imagine. We show you the actual materials, the actual finishes, and the actual quality your home will be built with.
Every CasaVera product is manufactured through direct factory relationships. There is no retail chain. No distribution margin. The price reflects what it genuinely costs to produce a bespoke product at European quality.
If you are commissioning a house extension or loft conversion in West London, come and see what your home could look like before you appoint anyone.
Who we work with
Clients who will not accept the gap between vision and reality.
The homeowner who wants the right result, not the cheapest quote.
The loft conversion specialist who explains the difference before you decide.
You have researched hip-to-gable, dormer, and mansard conversions. You know what your roof allows. You want a loft conversion company in London who can manage planning, handle building regulations, and deliver a fully specified master bedroom or home office. One firm. One contract.
Full Build
The client who wants it all done under one contract.
Book your consultation
Tell us about your project.
Your named project manager will contact you within one working day to arrange a site visit at a time that suits you.
No obligation. A site consultation is not a commitment. It is the first step in understanding whether we are the right firm for your project.
No hard sell. We present a fixed-price proposal. You decide. There is no follow-up pressure if it is not the right fit.
One named contact from day one. The person who responds to this form is the project manager who will run your project if you proceed.
We cover TW, W, UB, HA and KT postcodes across West London, Berkshire and Surrey.
Rated 5/5 on Google
Common questions
What clients want to know first.
What does a house extension cost in West London?
A rear or side extension in West London typically starts at £80,000 for a single-storey project. A double storey extension or wrap around extension typically ranges from £130,000 to £220,000 depending on specification. Every Anamorphic project is priced at a fixed sum before work begins. Your project manager will provide a fully itemised fixed-price proposal after the site consultation.
What is the difference between a dormer, hip-to-gable, and mansard loft conversion?
A dormer loft conversion extends vertically from the existing roof slope, adding standing headroom and windows to the rear. A hip-to-gable loft conversion rebuilds the sloping hip end of a semi-detached roof into a vertical gable wall, significantly increasing floor area. A mansard loft conversion replaces the entire rear roof slope with a near-vertical mansard wall, gaining the maximum possible space. Your property type determines which conversion is possible. We explain all options at the site consultation.
Do I need planning permission for a loft conversion or extension?
Many rear extensions and most loft conversions fall within Permitted Development rights, meaning no full planning application is required. However, this depends on your property, postcode, and the scale of the project. Anamorphic manages all planning submissions and building regulation sign-off as part of the contract. You do not need to navigate this separately.
How long does a loft conversion or extension take?
A single-storey rear extension typically takes 10 to 16 weeks from ground break. A double storey extension typically takes 16 to 24 weeks. A dormer or hip-to-gable loft conversion typically takes 10 to 14 weeks. A combined loft conversion and extension is typically 20 to 28 weeks. Timelines are confirmed in your fixed-price proposal before work begins.
What postcodes do you cover?
Our primary coverage area for house extensions and loft conversions in West London covers TW, W, UB, HA and KT postcodes. We also take projects in Berkshire and Surrey. If your postcode is not listed, contact us directly and we will confirm whether we can take your project.
Can I see the finishes and materials before I commit?
Yes. Our CasaVera Experience Centre in West London is 8,500 sq ft across 16 product lines, all live and all on display. You can walk through complete room sets, touch the materials, confirm your kitchen specification, select bathroom finishes, and see the quality of joinery before a single decision is finalised. This is included as part of the Anamorphic project process.
Anamorphic & Co. · West London
Your project has one price. It does not change.
Book a consultation. Your named project manager responds within one working day.