Construction2 min read

Ten questions for a design and build firm

Ten things worth asking any contractor before you appoint one, from who prices the drawings to how a change on site gets costed.

Design and build company in London. Designers, a quantity surveyor and builders, under one contract.

Choosing a contractor decides how the next year of your life goes. NU Projects is a design and build studio on Fulham High Street. We have worked on London homes since 2010. Below are ten things worth asking any firm about, and how we answer them.

1. Built in London since 2010

NU Projects has been building in London since 2010. The work is mostly prime residential: whole house renovation, extensions, basements and fit out. Every job runs under one contract, with one project manager and one site foreman. You can see finished work on the projects page.

2. What you hear while the job runs

You get a named project manager and a site foreman. You keep both to the end. Cost and programme are reviewed with you as the work goes, not at handover. A change is priced before it is built. The number in front of you is the number you pay.

3. The design is drawn for your house

No two London houses share a plan, party wall position or planning history. We survey, draw and price for the house you actually own. A single room and a whole house get the same process at different sizes.

4. Who is in the studio

Architectural designers and interior designers draw the work. Our in-house quantity surveyor prices it. Our MEP director takes the mechanical and electrical. They sit in one studio on Fulham High Street. A drawing is costed by the people who will build it.

5. Materials and workmanship

Kitchens, wardrobes, libraries and fitted furniture are made by Cochrane Bespoke, our joinery partner. Finishes are specified and scheduled before the price is fixed. That is the difference between choosing a tile in a drawing or on site. Otherwise three trades wait.

6. Energy and waste

Insulation, airtightness, heating and controls are decided at design stage. They are not bolted on later. Better fabric lowers what the finished house costs to run. Waste is sorted on site and the transfer notes are kept.

7. How the price is set

The drawings are measured and priced line by line. They are then quoted as a lump sum. You see the cost plan behind the total, trade by trade. Published rates for this kind of work are on our cost calculator. There is no form in front of them.

8. After handover

The job does not end at practical completion. There is a defects period afterwards. We come back to put right what that period covers. You are handed the manuals and the warranties for what was installed.

9. Safety on site

Sites are run to CDM 2015. There is a construction phase plan and a principal contractor. There is an induction for anyone working there. A well run site is also a quicker one, because nothing stops.

10. How to check any of this

References are the part most people skip. Ask any contractor for two recent clients and telephone them. Ask what changed during the job and what the change cost. Ask how long it took to get an answer. Ask ours too.

For those answers about your own house, tell us on our contact page. Or call the studio on 020 7731 6841.

This is the work we do. Design and build company in London, or ask for a cost estimate.

Published 8 December 2025. Written by the NU Projects studio, edited since for house style and accuracy.

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