About us

Who we are

Building contractors in the heart of London

Niblock Building Contractors is a leading refurbishment and maintenance contractor, delivering high-quality refurbishment, modernisation and retrofit projects across London and the South East. Through continued growth and investment, we have built a reputation for technical excellence, collaborative working and exceptional customer service, developing long-term partnerships with clients across the social housing, public and private sectors.

As our business has evolved, we have remained true to the values that have shaped us for more than six decades. We believe successful projects are built on trust, open communication and a genuine commitment to understanding our clients’ objectives. By combining experienced people with technical expertise and a collaborative approach, we consistently deliver safe, high-quality projects that benefit our clients, residents and the communities they serve.

The old adage that a company is only as good as its staff is never more true than at Niblock. Established in 1959, we are proud to have built a loyal, knowledgeable and experienced team, with an average management tenure of 17 years. This continuity enables us to develop long-standing client relationships, retain valuable expertise and consistently deliver the high standards our clients expect.

We believe this is a reflection of the traditional values that continue to shape our business and our philosophy of working with our clients, rather than simply working for them. This collaborative approach is embedded throughout the company – from board level through to our site teams – and underpins every project we deliver.

Meet the team

Meet the team

Our history

Niblock was founded in 1959 as a Carpentry & Joinery contractor by Mr. Joseph Niblock. By the early 1960’s, Niblock had begun to venture into general building contracting; working primarily for the Greater London Council and local authorities, undertaking an element of new construction of flats and houses close to their workshop in Anerley, South East London.

During the late 1970’s, Niblock decided to intensify its efforts on general building, and as a result, the carpentry division gradually declined. This concentration on general building led to the company being approved by most London local authorities, numerous housing associations and selected private clients. By the early 1980’s, Niblock’s reputation was widely recognised as a contractor that delivered what was promised, and this helped to build the relationships with major consultants within the industry; private enterprises; housing associations; and local authorities.

It was in the early 1980‘s that the present Managing Director, Martin Waters, began his association with the company. Martin joined Niblock as a Quantity Surveyor, but his talents were quickly recognised by the Board of Directors and he was soon promoted to Director. In 1992, the Directors were considering retirement and Martin recognised that Niblock had a good reputation and considerable potential. He therefore made the decision to take the bold step of buying out the retiring Directors. Martin’s aim was to retain the positive and traditional elements that were associated with Niblock, but also inject foresight and a positive attitude. 

Kevin Hartland joined the business as a Director in 2012. With over 35 years of industry experience, Kevin has consistently focused on enhancing capabilities in process and service management, ensuring effective and efficient project implementation from design through to delivery. His work has been instrumental in driving continual improvement in Key Performance Indicators across all Niblock business activities.

In May 2025, Kevin was appointed Joint Managing Director. In this role, his responsibilities have expanded to include strategic leadership across the organisation, overseeing operational performance, strengthening client relationships, and supporting the long-term growth and development of the business. He continues to play a key role in enhancing operational excellence while helping to shape the company’s future direction.

Today, Niblock has a turnover in excess of £24 million and a healthy order book for the future, with repeat business being the cornerstone of the Company’s turnover. The Company’s success is attributed to its professional management and the employment of highly competent staff. The key element which sets Niblock apart from its competitors is the extremely high staff retention rate and very loyal workforce.

Our accreditations

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Our independently assessed accreditations reflect our commitment to delivering construction projects safely, responsibly and to the highest industry standards. They provide assurance that our systems, processes and technical competence meet the expectations of clients.

  • Constructionline Gold – Independently verified against recognised procurement, governance and compliance standards for public and private sector projects.
  • CHAS Elite – Certified against the Common Assessment Standard, demonstrating compliance with recognised health and safety, environmental and business management requirements.
  • CHAS SSIP Approved Contractor – Independently assessed against the SSIP Core Criteria, demonstrating compliance with recognised UK health and safety legislation for both Contractor and Principal Contractor roles.
  • Federation of Master Builders (FMB) – Registered member of the UK’s largest trade association for builders, having met strict membership requirements and passed an independent inspection.
  • SafeContractor Approved – Independently assessed to demonstrate effective health and safety management systems and compliance with recognised industry standards.
  • ISO 9001:2015 – Certified quality management system demonstrating a commitment to consistent service delivery, continuous improvement and customer satisfaction.
  • ISO 14001:2015 – Certified environmental management system demonstrating a structured approach to environmental responsibility and continual improvement.
  • ISO 45001:2018 – Certified occupational health and safety management system demonstrating a commitment to protecting employees, clients and the wider public.
  • Cyber Essentials Certified – Government-backed certification demonstrating a commitment to cyber security and the protection of company and client information.
  • NICEIC Approved Contractor – Independently assessed as competent to design, install, inspect and test electrical installations in accordance with BS 7671.
  • NHBC Registered House Builder – Registered with the National House Building Council, demonstrating the technical and financial competence required to provide the Buildmark warranty for new-build homes accepted by UK mortgage lenders.
  • Upper Tier Waste Carrier Licence – Registered with the Environment Agency to transport and manage controlled waste in accordance with environmental legislation.
  • Mates in Mind Supporter – Demonstrates our commitment to promoting positive mental health, wellbeing and a supportive working culture across the construction industry.
  • Construction Health and Safety Group (CHSG) – Active member of an industry association dedicated to improving occupational health, safety and best practice across the construction sector.

Niblock Building Contractors is the trading name of Niblock (Builders) Limited and is registered in England and Wales. Company Number 833825
Registered Office: 43-45 Dorset Street, London W1U 7NA

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