B&Lonzer Construction
Skills
- Kitchen Fitters - Installation
- Kitchen Doors - Repair
- Kitchen Designers
- Worktops - Granite
- Worktops
- Kitchen Appliance Supplier
- Kitchen Supplier
- Worktops - Marble
Services
Customer Reviews
Write a review9.33 /10
Based on 2 reviews over the past 12 months
Quality of work
9
Reliability
9.5
Communication
9.5
Reviews (28)
9.67 Replacement Doors and Drawers
Posted 15 September 2025
Highly recommended company
My experience with Bart and his whole team, particularly Leszek, has been very positive and I would highly recommend his company. They completed a wide variety of jobs, including sanding, repairing and painting original 1906 sash windows, plastering, wiring, plumbing, repair jobs, building new wardrobe doors, and repairing, plastering and repainting some water-damaged walls. Bart and all the professionals he contracted were reliable, very hard-working, courteous and tidy. At all stages, Bart's communication was excellent, and he always went the extra mile with professionalism and good humour.Verified reviewerJob location: W49 Bespoke Kitchens - Supply & Installation
Posted 03 July 2025
All round building contractor for three of my properties
B & Lonzer have consistently provided a highly professional and reliable service for three of my properties. From Kitchen fitting and decoration in one property, to redecoration of an entire second property to a full refurbishment of an entire apartment in a third property (covering Kitchen, Bathroom, Bedrooms, balcony etc.). This is a thoroughly reliable company that delivers results to a very high standard. I recommend Bart and his team without hesitation!Verified reviewerJob location: SW1510 Bespoke Kitchens - Supply & Installation
Posted 09 May 2025
Complete kitchen refit
Excellent communication and knowledge from Bart and his team I would have all the faith in using them again. Very clean, reliable, and considerate workforce.Job location: TW1810 Refurbishments
Posted 17 February 2025
Complete refurbishment of 2-bed apartment done in record time to a very high standard.
Complete refurbishment of 2-bed apartment carried out in record time to a very high standard.Verified reviewerJob location: SW159.67 Refurbishments
Posted 03 January 2025
Full house renovation with kitchen extension and loft conversion
Bart and his team are very good. We did 2 large building works with him, one being home renovation with kitchen extension and 2 years later we worked with him in a loft conversion. Good time and budget management and also very reliable to come and fix issues after building works. Would highly recommend!Verified reviewerJob location: SW209.25 Bespoke Kitchens - Supply & Installation
Posted 05 November 2024
Loft conversion
Excellent experience with Bart, Andrew and their team. Very efficient and good communication, which made the process easy for us as the client. The work was completed to a very good standard and they made excellent suggestions and went beyond what was asked of them. The project was completed in good time without any complications.Verified reviewerJob location: HA6
Photos
Company Info
Owner
Mr Bartosz Lonzer
Partnership
7 years on Checkatrade
VAT Registered
Yes:
Created over ten years ago to provide a complete building service for our clients, Lofts and Extensions are more than just a local builder. We will work with you to discover the full potential of your home and offer a one-stop shop for your project, from the creative planning stages, right through to completion.
Accreditations and awards
This trade passed up to 12 Checkatrade vetting checks
Member since September 2019
Individual checks
Identification
Proof of address
Financial
Qualifications and accreditations
County court judgement
Open source media
Business checks
Customer Reviews
Company trading history
Company duplication
County court judgement
Enhanced business check
Director checks
