Trusted Builders for Renovations, Repairs & Maintenance Across Northern Ireland
With over 25 years of experience, Blackthorn Building & Maintenance delivers high-quality construction, insurance repairs, property maintenance, and conservatory builds – all managed from start to finish by a reliable, family-run team.
Family-Run Builders With 25+ Years of Experience You Can Trust
Blackthorn Building & Maintenance is a reliable construction company serving homeowners, landlords, and commercial clients across Northern Ireland. With over two decades of hands-on experience, we offer a full range of services including building, insurance repairs, property maintenance, and conservatory installations.
We’ve built our reputation on quality workmanship, open communication, and delivering projects on time and to standard. Whether it’s a home renovation, a landlord maintenance request, or an insurance repair with our in-house assessor, we manage every project from start to finish with professionalism and care.
Reliable Building, Repairs & Maintenance – All Under One Roof
We offer a complete range of professional services to domestic and commercial clients across Northern Ireland. Whether you're planning a renovation, need urgent insurance repairs, or looking for a long-term property maintenance partner, we have the skills and experience to deliver
Building & Renovation
From new builds and house extensions to garage conversions and structural alterations – we carryout all types of domestic and commercial building work.
Insurance Repairs & Claims Support
We handle insurance-related damage quickly and efficiently, with the help of our in-house assessor. From fire and flood to storm repairs, we take the hassle out of the claims process.
Property Maintenance for Landlords
We offer dependable, cost-effective maintenance services tailored for landlords, letting agents, and housing providers – including repairs, refurbishments, and regular upkeep.
Conservatories & Sunrooms
Add space, light, and value to your home with a new conservatory build or modern refurbishment.
Designed for year-round comfort and finished to the highest standard.
Trusted by Homeowners, Landlords, and Businesses Across Northern Ireland
With decades of experience and a reputation built on reliability, Blackthorn Building & Maintenance stands out for quality service and lasting results. From major building work to quick-response maintenance and insurance repairs, our clients choose us because we deliver – on time, on budget, and to the highest standards.
01. Over 25 Years of Industry Experience
We bring deep knowledge, problem-solving expertise, and hands-on skill to every job – no matter the size or complexity.
02. Fully Insured With In-House Insurance Assessor
We bring deep knowledge, problem-solving expertise, and hands-on skill to every job – no matter the size or complexity.
03. End-to-End Project Management
We bring deep knowledge, problem-solving expertise, and hands-on skill to every job – no matter the size or complexity.
04. Trusted by Landlords & Commercial Clients
We bring deep knowledge, problem-solving expertise, and hands-on skill to every job – no matter the size or complexity.
A Look at the Quality Work We Deliver Every Time
We take pride in every job we complete, from full renovations and insurance repairs to property upgrades and new builds. Here are a few recent examples that showcase our standard of workmanship and the range of services we provide.
House Extension & Renovation – Belfast
A full wrap-around extension including open-plan kitchen-dining area, utility room, and bathroom upgrade. The build included all groundwork, blockwork, roofing, electrics, plumbing, and finishings – delivered on time and to building control standards.
Fire Damage Insurance Repair – Newtownabbey
We carried out a full internal strip-out and rebuild following significant fire damage. With our inhouse assessor managing the claim, we coordinated everything from initial clearance and safety checks to plastering, flooring, and final decoration – restoring the home quickly and professionally.
Got a Question? Here Are Some We’re Often Asked
We’re always happy to chat about your project, but here are a few answers to common questions we get from homeowners, landlords, and commercial clients.
What areas do you cover?
We’re based in Northern Ireland and cover a wide range of areas across the region. Get in touch to confirm if we work in your location.
Do you handle insurance claims?
Yes – we regularly carry out insurance repair work and have an in-house assessor who can manage your claim efficiently from start to finish.
Are you fully insured and qualified?
Absolutely. We are fully insured and CSR registered. All of our work is completed to current building control standards.
Do you work with landlords and letting agents?
Yes, we provide responsive maintenance, refurbishments, and ongoing property upkeep for landlords and agents throughout Northern Ireland.
Can you manage my entire project?
Yes – from planning and design to construction and final finish, we handle every stage of the project so you don’t have to coordinate multiple trades.
Do you offer free quotes?
We do. Contact us with details of your project and we’ll arrange a free, no-obligation quote at a time that suits you.
Hear What Our Clients Say About Working With Blackthorn
We’re proud of the relationships we build with our customers – and even prouder when they share
their experience. See the latest reviews and feedback below.
Embed Code
© 2025 Blackthorn Building & Maintenance. All Rights Reserved.