Business Details
20 Years
experience
Trusted Builders in Northampton for Domestic & Commercial Projects
Established in 2006, ATJ Building & Groundworks is a family-run business with over 15 years of experience in the construction industry. We specialise in delivering high-quality domestic and commercial building projects across Northampton and surrounding areas, including Milton Keynes, Bedford, and Kettering. Our services encompass new builds, extensions, loft conversions, underpinning, and commercial refurbishments, all executed with a commitment to precision and client satisfaction. Unlike many competitors, we do not subcontract work, ensuring full control over quality and timelines. Our team of NICEIC and Gas Safe-certified professionals brings technical expertise to every project, from initial design to final construction.We pride ourselves on transparency, offering free consultations and design services when undertaking build projects. Trusted by homeowners, educational institutions, and government departments, we maintain a reputation for reliability and craftsmanship. Our approach combines traditional values with modern techniques, ensuring projects are completed on time, on budget, and to the highest standards. This dedication has earned us long-term client relationships and industry recognition as one of Northamptonshire's leading construction firms.
Services
Domestic Building
Commercial Building
Loft Conversions
Extensions
Underpinning
Details
- Year established: 2006
Highlights and features
- We have 15+ years of experience in domestic and commercial construction.
- We guarantee high-quality workmanship with no subcontracting to third parties.
- Our team includes NICEIC and Gas Safe-certified professionals.
- We serve educational institutions, government departments, and private clients.
- We offer free design services when undertaking full build projects.
What people say
First-class finish
Minimal disruption
High standard
Completed on time
Professional service
Services
Domestic Building
We deliver comprehensive domestic building solutions including new homes, extensions, and renovations. Our team ensures structural integrity while meeting individual client needs. Projects are managed from planning to completion, with a focus on energy efficiency and modern design standards.
Commercial Building
Our commercial building services cater to educational institutions, government departments, and private enterprises. We handle large-scale projects like office conversions and factory renovations. Compliance with health and safety regulations is prioritised throughout the construction process.
Loft Conversions
We transform loft spaces into functional rooms while adhering to building regulations. Services include dormer, rooflight, and hip-to-gable conversions. Free feasibility assessments ensure optimal use of available space and structural compatibility.
Extensions
From traditional conservatories to modern glass extensions, we create tailored solutions for residential and commercial properties. Our designs balance aesthetics with practicality, incorporating energy-efficient materials and bespoke architectural features.
Underpinning
We provide underpinning solutions for subsidence issues and basement construction. Traditional excavation methods are used alongside engineer-approved techniques to ensure structural stability and long-term durability for residential and commercial buildings.
People
Terry Jwanczuk
Founder
With over 25 years in construction, Terry established ATJ Building & Groundworks in 2006. His expertise in structural engineering and commitment to quality has driven the company's growth while maintaining family-run values.
Questions
What areas do you serve for domestic projects?
We operate within a 40-mile radius of Northampton for domestic work, covering Milton Keynes, Bedford, Wellingborough, and surrounding areas.
Do you handle commercial projects outside Northampton?
Yes, we undertake commercial projects throughout the UK, with recent clients in educational and government sectors.
Is planning permission included in your services?
We can apply for planning permission and building regulations approval on your behalf as part of our design and build package.
What guarantees do you offer on workmanship?
All projects come with a guarantee covering workmanship standards, with timelines varying based on the specific service provided.
Can you assist with disabled access adaptations?
Yes, we specialise in accessibility modifications including ramps, widened doorways, and wet rooms for both domestic and commercial properties.
Do you offer free consultations?
We provide free initial consultations for all domestic and commercial projects to discuss requirements and feasibility.
