Business Details
Emergency
services
Your Trusted Building & Roofing Partner in Northampton
Established over three decades ago, JB House has built a reputation as a trusted name in building and roofing services across Northamptonshire. As a family-run business, we combine extensive industry experience with a commitment to quality craftsmanship, serving both domestic and commercial clients. Our team of skilled professionals delivers tailored solutions for projects ranging from home extensions and loft conversions to commercial roofing and new builds. Accredited by the Federation of Master Builders, Trustmark, and Checkatrade, we prioritise customer satisfaction through transparent communication, competitive pricing, and adherence to strict quality standards.With insurance-backed guarantees and structural warranties, we ensure peace of mind for every client. From initial design consultations to project completion, our end-to-end services streamline the construction process, minimising disruption while maintaining exceptional standards. Our proven track record includes a diverse portfolio of projects, reflecting our adaptability to varying client needs and budgets. Regularly featured as Northampton's Premier Building Contractor, we remain dedicated to evolving with industry advancements while upholding traditional values of reliability and integrity.
Services
Building Extensions
Loft Conversions
Roofing Services
Property Renovations
Commercial Building
Highlights and features
- 30+ years of combined experience in domestic and commercial construction
- Free site surveys and transparent pricing with no hidden fees
- Insurance-backed guarantees and structural warranties on all services
- End-to-end project management from design to completion
- Accredited by Federation of Master Builders and Trustmark standards
Associations and certifications
- Federation of Master Builders
- Trustmark
- Checkatrade
- The Guild of Master Craftsmen
What people say
Reliable, skilled team
High standard work
Impeccable results
Exemplary communication
Seamless experience
Services
Building Extensions
We design and construct single and double-storey extensions to create additional living or commercial space. Our services include structural steelwork, brickwork using traditional or reclaimed materials, and bespoke carpentry. Every project receives architectural drawings, planning permission assistance, and full project management to ensure seamless integration with existing properties while meeting modern building regulations.
Loft Conversions
Transform unused loft space into functional rooms with our comprehensive conversion service. We handle structural modifications, insulation, staircase installation, and finishing touches like plastering and tiling. Our team ensures compliance with building regulations while maximising headroom and natural light, creating valuable additional space for homes or businesses.
Roofing Services
We provide complete roofing solutions including pitched and flat roof installations, tiling, slating, and lead work. Emergency storm damage repairs are available with temporary protection followed by permanent fixes. All new roofs include a 10-year insurance-backed warranty, while EPDM rubber and TPO flat roofing systems offer durable, low-maintenance options for residential and commercial properties.
Property Renovations
From minor refurbishments to full property overhauls, our renovation services cover electrical rewires, plumbing upgrades, and structural modifications. We specialise in modernising older properties while preserving architectural character, offering coordinated tradespeople to handle carpentry, tiling, and decorative finishes to enhance functionality and value.
Commercial Building
We deliver commercial construction projects including new builds, extensions, and maintenance for offices, warehouses, and retail units. Our services encompass full project management, compliance with commercial building regulations, and coordination of specialist trades. Clients benefit from fixed deadlines, transparent budgeting, and minimal operational disruption during construction phases.
Questions
What building services do you offer?
We provide extensions, loft conversions, property renovations, commercial building projects, and full property refurbishments, including structural steelwork and traditional brickwork.
Are your services insured and guaranteed?
Yes, we offer insurance-backed guarantees and structural warranties, accredited by the Federation of Master Builders and Trustmark for quality assurance.
Do you handle both domestic and commercial projects?
We serve both residential and commercial clients, offering tailored solutions from home extensions to large-scale commercial construction and maintenance.
How experienced is your team?
With over 30 years of combined experience, our skilled tradespeople deliver expert craftsmanship across all projects, supported by formal accreditations and industry recognition.
Can you assist with design and planning?
Yes, we offer end-to-end services including architectural drawings, planning permission applications, and full project management from concept to completion.
