★★★★★4.9 on Google from 10+ reviews
Protostar Construction — builders in London
Protostar Construction is an architect-led London builder and a family company established over 20 years. It builds, renovates and designs residential and commercial projects for property developers and homeowners, aiming to deliver on time and to budget. Based in Golders Green, NW11, it serves North London and surrounding areas.
What Protostar Construction does — and what it typically costs in London
Every job below can be priced from this page. The ranges are what London homes typically pay, from Locufy's price guides. Protostar Construction confirms the exact figure in a written quote — asking is free, with no obligation.
Building & extensions
Kitchens, bathrooms & interiors
Roofs, walls & windows
Typical prices from Locufy's UK 2026 price guides — each guide explains what the job involves and what moves the price. Rendering and insulation installer are also offered, priced on survey.
About Protostar Construction
Protostar Construction is an architect-led London builder and a family company established over 20 years. It builds, renovates and designs residential and commercial projects for property developers and homeowners, aiming to deliver on time and to budget. Based in Golders Green, NW11, it serves North London and surrounding areas.
You can ask for a written price on any building job from this page — an extension, a kitchen refit, a roof that leaks — and compare it with other London builders if you want to.
At a glance
- Trade
- Building and construction
- Based
- London
- Covers
- London and 15 km around
- 4.9 · 10+ reviews
- Hours
- Mon–Thu 8:00–18:00, Fri 8:00–12:00
- Quotes
- Written, free, no obligation
A written price, with no obligation
Describe the job
A line or two and a photo if you have one — it takes a minute.
Protostar Construction prices it
It goes directly to them by email; they come back to you with a written price.
Book, or compare
Happy? Book the date directly with them. Not sure? Compare quotes from other London builders.
How Protostar Construction is rated
As published on Google, refreshed on each visit.
Read the reviews on Google →Reviews from Locufy bookings appear here
Every Locufy review comes from a job booked through Locufy, so each one is a real customer. Booked Protostar Construction? You can leave the first one after the job.
Have a question before you book?
Do they handle planning? Are they on the voluntary construction register? Your message goes directly to Protostar Construction by email.
London and the towns around it
Based in London, Protostar Construction works across the city and about 15 km around it.
- London
- Islington
- City of Westminster
- Enfield Town
- Harrow
- Tottenham
- Walthamstow
- Wembley
- Fulham
- Edmonton
Before you book
Where is Protostar Construction based?
Protostar Construction is based in Golders Green, NW11, London, and serves North London and the surrounding areas.
Does Protostar Construction take on commercial projects?
Yes, it works on both residential and commercial projects, providing high-specification full construction services for new builds and renovations.
Do I have to pay a deposit?
No, there is no deposit required.
Is aftercare available once a project is finished?
Yes, long aftercare is offered.
Who does Protostar Construction work for?
It works for property developers and homeowners, aiming to complete projects on time and to budget.
Does Protostar Construction offer design and build?
Yes, design and build is one of its services, alongside home extensions and conversions, home renovation and refurbishment, and property development.
Get a written price from Protostar Construction
You can compare it with other London builders too.
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