Master Builder

Covering Welwyn Garden City and the surrounding areas of Hertfordshire. We solely focus on large scale projects.

07367 196362

Membership number TT31054

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4.98 out of 5
21 reviews

Initial impression Initial impression: 4.95 out of 5.0
Punctuality Punctuality: 5.0 out of 5.0
Cleanliness Cleanliness: 5.0 out of 5.0
Quality Quality: 5.0 out of 5.0
Value Value: 4.95 out of 5.0
Overall opinion Overall opinion: 5.0 out of 5.0

0 missed appointments in the past 6 months

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About Master Builder, Welwyn Garden City

Master Builder is a trusted building company focusing on large scale house extensions, full home renovations, kitchen renovations and bathroom refurbishments across Welwyn Garden City, Hertfordshire and surrounding areas.

With over 20 years of experience, our fully qualified and insured team delivers high-quality workmanship, reliable project management and excellent customer service from start to finish.

We focus solely on larger scale renovations and refurbishment projects, including:

House Extensions
Full Property Renovations
Kitchen Renovations
Bathroom Renovations
Structural Alterations
Brickwork
Roofing
Plastering & Rendering
* External Works

Whether you are expanding your family home, upgrading your living space or planning a complete refurbishment, we provide tailored building solutions focused on quality, value and long-term results.

To find out more about the services we offer or to view our gallery, please visit our website: https://masterbuilderluton.com

Please view our customer reviews on TrustATrader to see why local homeowners choose Master Builder for reliable, professional building services.

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Master Builder

Sole trader

Verified on 8th October 2025

Identification checked
Company address verified
Customer references checked
Agreed to TrustATrader's high standards
Agreed to complaints procedure

Welwyn Garden City
Hertfordshire

Insurance details

Provider	Simply Business
Verified	22nd June 2026

Associations

TrustATrader.com

Average rating: 5.0 out of 5

Review by Den Mackintosh

on 8th October 2026

"We appointed Istvan from Master Builder Luton Ltd for a very large renovation and extension project, and we have been extremely impressed with the work. The project involved a substantial 17m x 4m side and rear extension, complete demolition of the existing garage and rebuilding it from the foundations, including a new ground floor and first floor above. The work also included three new bathrooms, a complete new kitchen installation, structural works, plumbing, electrics, plastering, tiling, flooring and decorating. This was a major project requiring a lot of planning and coordination, and Istvan and his team managed everything professionally from start to finish. Communication was excellent, the team worked hard and the quality of the workmanship was very high. We would highly recommend Istvan and Master Builder Luton Ltd, particularly for large extensions, full property renovations and major building projects."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
Average rating: 5.0 out of 5

Review by Trinity Rivero

on 26th September 2026

"We hired Master Builder for a major project on our home, including a rear and side extension. From the beginning, Istvan and his team were professional, reliable and very hardworking. The project involved extensive building and structural work, and everything was managed very well from start to finish. Communication was good throughout the project, the team always kept us informed about the progress, and the quality of the workmanship was excellent. We are extremely happy with the finished extension and the additional space it has created for our family. We would definitely recommend Master Builder to anyone looking for a reliable builder for a large extension or renovation project."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
Average rating: 5.0 out of 5

Review by Katie Miles

on 21st September 2026

"We used Master Builder for a complete renovation of our house in Welwyn Garden City and are very pleased with the result. This was a large project which included a new kitchen, three new bathrooms, complete rewiring of the house, replacement of the water pipework throughout the property and installation of a new system boiler and heating system. Istvan and his team managed the different trades and stages of the renovation professionally and kept the project moving. The workmanship and attention to detail were excellent, and any questions we had during the work were dealt with quickly. The house has been completely transformed and we are very happy with the final result. We would highly recommend Master Builder for full house renovations and other large building projects."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
Average rating: 5.0 out of 5

Review by Arnold Roby

on 20th June 2026

"We had a fantastic experience working with Master Builder on our home extension. Istvan and his team were professional, organised, and committed to delivering great results. The project was managed efficiently, communication was consistent, and the finished work exceeded our expectations. Highly recommended."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0

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Master Builder

About Master Builder, Welwyn Garden City

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Master Builder

Insurance details

Associations

Reviews (21)

Review by Den Mackintosh

Review by Trinity Rivero

Review by Katie Miles

Review by Arnold Roby

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