Memento Design & Build designs, extends and refurbishes homes across London and the South of England. Every job comes with one itemised quote covering every trade, and a 24-month guarantee on our workmanship.
Call 020 8087 4729 or WhatsApp 07376 432613
All types of building and refurbishment work, from a single room to a whole property.
Drawings, planning applications and structural calculations arranged for you.
Rear and side extensions, loft conversions, wall removal and steel beams.
Whole homes or single rooms stripped back, refitted and finished.
Offices, gyms and studios, insulated and fully fitted out.
Rewires, heating, and painting and decorating, inside and out.
For councils, housing associations and main contractors.
A few of the homes we have extended, refitted and finished.
Most refurbishment problems start in the gaps between trades. We close those gaps by taking responsibility for all of them.
An itemised quote covering every trade, so you can see exactly what is included before any work starts.
We sequence the work, so the electrician, plumber and plasterer arrive in the right order and the job keeps moving.
You deal with the same person from the first site visit to handover, with progress photos along the way.
If something needs putting right, you call us. You never have to work out which trade was at fault.
Tell us about it and we will arrange a site visit. One quote will cover everything it needs.
All types of building and refurbishment, from a single room to a full property. Whatever the job needs is priced and managed by us.
Start with us before you have drawings. We arrange the design, the applications and the structural calculations, then build what has been approved.
Drawings and calculations are prepared by architectural designers and structural engineers working with us on your project.
More space without moving. We build the shell and finish the inside, so the new space is ready to use.
Changes to the layout of the home you already have, with the structural work designed, approved and built properly.
Extra space at the end of the garden, built to last and finished like a room in the house.
Whole homes stripped back and rebuilt to a finished standard, ready to live in, sell or let.
Fitted by one team, so the plumbing, electrics, tiling and units all line up and nobody is waiting on another trade.
The trades every job needs, included in the same quote and programme, so you don't have to find or book anyone else.
Electrical work is carried out by registered electricians and gas work by Gas Safe engineers.
Shops, offices, bars and restaurants refitted by one team, with the work planned around your opening date.
One contractor for the work a rented property needs, from a refresh between tenants to a full conversion.
Repairs, redecoration and refits turned round quickly, so the property is ready to let again.
New layouts, fire doors, alarms and extra bathrooms, built to your council's licensing requirements.
Electrical and gas safety checks by registered engineers, with certificates for your records.
Ongoing repairs for one property or a portfolio, including damp and mould treatment.
Send the property address and a description of the work, or your specification and drawings.
We survey the property and send one written, itemised quote covering every trade, with a start date and programme.
We run the job day to day. You have one named contact and get progress photos as each stage is completed.
We walk the finished job with you, put right any snags and hand over certificates and completion photos.
Yes. Our quote covers every trade the job needs, including demolition, structural work, electrics, plumbing, plastering, joinery and decorating. You don't need to find or manage anyone else.
Not always. Many extensions, loft conversions and garden buildings can be built under permitted development, without a planning application. We check at the start, and where an application or a lawful development certificate is needed, we arrange it.
Yes. We arrange the survey, the drawings and the structural calculations, then build what has been approved.
It depends on the size and type of job. Your quote includes a programme with start and finish dates, and we tell you straight away if anything changes.
Yes. We work on anything from a single room or a one-day repair to a full property refurbishment or extension.
Payments are staged against completed work and set out in your contract. A deposit secures your start date, and the final payment is due only when the job is finished.
Yes. All our workmanship carries a 24-month written guarantee. If anything we built or fitted needs putting right in that time, we come back and fix it.
Yes. We agree working hours and access in advance, protect floors and furniture, and leave the property safe and tidy at the end of each day.
Yes. We hold £5 million public liability and £10 million employers' liability insurance. Certificates are available on request.
Homes and commercial spaces built and fitted out by our director and team. Choose a type of project, or tap a photo to enlarge it.
For councils, housing associations and main contractors
Void works, adaptations, and damp and mould repairs across London and the South of England. We take small works packages directly, or work as a subcontractor on housing repair and refurbishment contracts.
An empty home earns no rent and keeps a household waiting. We agree a return date for every void before we start, and sequence the trades to meet it.
We work to your schedule of rates, or give a fixed quote for each property. Any extra work is photographed, priced and approved by you before it goes ahead.
We agree appointments and access with residents in advance, protect their belongings, and leave the home safe and tidy at the end of each day.
A named supervisor runs each job, and electrical and gas work is done by registered engineers. You deal with us alone, from instruction to handover.
Empty homes brought back to your lettable standard and returned on the agreed date.
Upgrades are easiest while a home is empty. If a kitchen, bathroom or heating system is near the end of its life, we flag it at the survey, so you can decide before the next tenant moves in.
Social landlords now work to legal deadlines for damp and mould. We find the cause, put it right and redecorate, then send a written report with photos for your records.
Changes that let residents stay safely and independently in their own homes.
Yes, for specialist trades. Our supervisor runs every job, and electrical and gas work is carried out by registered electricians and Gas Safe engineers. Every trade is insured and checked by us, and one company answers for the whole job.
Yes. We take complete packages, or supply labour to main contractors on housing repair and refurbishment contracts.
The keys, gas and electrical certificates where that work was done, and before and after photos of the property.
Send us the address and your specification. We will survey the property and come back with a price and a return date.
We are a new company built on many years of trade experience. Our tradespeople have spent their careers extending, refurbishing and fitting out properties, and Memento Design & Build brings them together under one name, one quote and one guarantee.
We are based in West London and work for homeowners, landlords, businesses, housing providers and main contractors across London and the South of England.
Every job is priced as one itemised quote and run by one point of contact. Our own team and trusted trade partners carry out the work, so you never have to find, book or manage separate trades.
All of London and the South of England. If you are not sure whether we cover your area, ask us.
The information procurement and supply chain teams usually ask for first.
Insurance certificates are available on request.
Call, message or email us about the job and we will arrange a site visit. One quote will cover everything it needs.
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WhatsApp messages and emails sent outside these hours are answered within one working day.
How Memento Design & Build Limited collects, uses and protects personal information. Last updated October 2026.
Memento Design & Build Limited is a company registered in England and Wales, company number 17285089. Our registered office is 128 City Road, London, EC1V 2NX. We are the controller of the personal information described in this policy.
You can contact us about this policy, or about your information, at info@mementodesignbuild.co.uk or on 020 8087 4729.
We use your information because it is needed to take steps before a contract and to carry out a contract with you, because the law requires it, or because we have a legitimate interest in running and promoting our business in a way that does not override your rights. Where we rely on your consent, for example to publish photos of your property, you can withdraw it at any time.
If we have written to you about a planning application, we took your name and address from the council's public planning register. We use those details only to send you the letter. If you tell us you do not want to hear from us, we will not write to you again.
We do not sell personal information, and we do not share it with other companies for their marketing.
We publish photos of a client's property only with the client's permission, and we never publish the address.
This website does not use cookies or analytics. It loads its typeface from Google Fonts, so Google receives your internet address when you visit. If you email us, we receive your email address and whatever you choose to send.
Some of the companies that provide our email and IT services may store information outside the UK. Where they do, they are required to protect it to the standard UK law requires.
You have the right to ask for a copy of your information, to have it corrected or deleted, to limit or object to how we use it, and to have it passed to another organisation. You can object to marketing at any time. To use any of these rights, email or call us using the details above. We will reply within one month.
If you are not satisfied with how we have handled your information, you can complain to the Information Commissioner's Office at ico.org.uk, or by phone on 0303 123 1113.
We will update this page if the way we use personal information changes.
