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Projects delivered
London’s trusted construction partner
We turn plans into places you love
Looking for a reliable and experienced construction company in London? At Bluestone State, we specialise in new builds, extensions, loft conversions, full house renovations, roof replacements/repairs, landscaping and underpinning across North, East, West and Central London. With 24+ years’ experience and CHAS accreditation, we handle everything from design coordination and structural works to Building Regulations sign-off. Expect clear, itemised quotes, honest timelines, weekly updates, tidy sites, and workmanship that lasts.
Our track record|your peace of mind
Your project, our expertise let's make it perfect.
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Experience
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Average client rating
OUR SERVICES
How we work
Our Process
A transparent, quality‑first approach from first call to final handover. Scroll to explore each step.
01
01
Consultation
Tell us your goals, budget and timeline. going through this step allows us to prepare an accurate quote.
- Site visit
- Early risk and cost guidance
- Planning & regs overview
02
02
Design & Survey
Measured survey, drawings and specifications aligned to your brief.
- Measured survey
- Architectural drawings
- Structural input as needed
03
03
Detailed Quote
Transparent pricing, programme and inclusions, no surprises.
- Fixed‑cost work packages
- Payment schedule
- Timeline & milestones
04
04
Build
Experienced teams deliver with safety and quality controls throughout.
- Site setup & H&S
- Weekly progress updates
- Snagging Process (Identify → Fix → Sign-Off)
05
05
Handover
We complete snags, issue certificates and user manuals, then hand you the keys.
- Final QA & snag list
- Building regs sign‑off
- O&M manual
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06
Aftercare
We stand by our work with responsive aftercare and warranties.
- Defects period support
- Manufacturer warranties
- Planned maintenance options
What clients say
Kolapo
★★★★★
I am happy with Bluestone State work and will recommend this to friends and colleagues.
Mohammad
★★★★★
Very good works in reasonable price
Funmi
★★★★★
What an outstanding work by Halim and his team. Halim and his team are patient, understanding and easy to work with. I was informed at every step of the project (ground floor extension and kitchen) and Halim made suggestions oh what to improve on. The project has a wow factor. The team worked well and to deadline. I will use Bluestonestate for my next project ie outer house/ loft. Bluestonestate is highly recommended for reasonable price, completing projects on time, caring about your work, cleanliness and attention to detail including after-care.
omar
★★★★★
Had the pleasure of finding Bluestone on google as they were local but once they started the work could see that is was a good choice and now will work with them again. Good overall quote Excellent communication Clean workmanship They go the extra mile Will definitely use them again. Omar
Marcela
★★★★★
The job well done and no delay We are happy for such a good team
Ahmad Zia
★★★★★
I hired Bluestone state as a subcontractor, they have completed several extention projects for me, my client and i are unbelievably happy from the service we received from them. They do thier job, while remaining professional and helping you through every process of your project from design to completion. I am very looking forward to work with them on many other projects. If you value time and want a high quality work Bluestone state is the go to company. Thanks again Bluestones.
Rjjd Djjdjd
★★★★★
We have been using Bluestone state for many years, they have done a loft conversion and a front portch for us. I am extremely happy with the service I have received from them as they have always been honest, professional and valued my time.
William Gomez
★★★★★
I first used Bluestone State 2 years ago just when lockdown was being eased. Had a loft conversion and granny annexe built. Great team, listened to us and met all our requirements from using metro tiles in a chevron pattern to getting anthracite windows. So happy I have used them twice
Accreditations & memberships
FAQs
Do you help with planning and building control?
Yes. We liaise with architects and inspectors and schedule visits around key milestones.
How do stage payments work?
We break down the programme into stages (e.g., strip‑out, first fix, second fix). You only pay once a stage is signed off.
Are you insured?
Yes — public liability and Employee liability insurance. Certificates available on request.