IT Support for Construction Companies in Northern Ireland

Managed IT, cybersecurity and Microsoft 365 for builders, contractors and developers across Northern Ireland and the UK. Connected site offices, protected payments, and IT you never have to manage yourself.

The problem your firm actually has

Technology that has to work on site as well as in the office

A building firm runs across an office, a van and a site that changes every year or so. Sites have no broadband, staff work from phones and iPads, and money moves between you, your suppliers and your subcontractors every week. Criminals know that. So do the clients and main contractors now asking about your security.

What we do for construction firms

We take full responsibility for your technology and security

So your site managers can focus on the build, and you can stop worrying about IT.

Managed IT, owned end to end

Your systems monitored, maintained and improved, with one monthly bill and no surprises. Office and site staff supported the same way.

Cybersecurity, built in

Email and payments protected against the fraud that targets builders, with every device monitored around the clock.

Microsoft 365, for office and site

Email, Teams and files for everyone, with site staff on the right licence for how they work.

Connected site offices

Site cabins connected with satellite broadband and 4G backup, with printers, scanners and Wi-Fi that work from day one.

Why building firms choose INNOSEC

Specialists in your sector, not generalists

We understand how a building firm actually runs: the office, the site and the van.

Specialists, not generalists

Architecture, engineering, construction, legal, accountancy and finance are all we do.

Fluent in your world

Site connectivity, CIS, payment fraud and the reality of running a business across office, van and site.

One monthly bill, no surprises

Simplicity scales, complexity fails.

Security-first, and we own the outcome

If we commit to it, we measure it, test it and deliver it.

Local, and close to you

Based in Northern Ireland, serving firms across Ireland and the UK.

Accountable support

A team that answers, not a ticket queue that goes quiet mid-project.

Built around your sites, your people and your payments

How do we get reliable internet on a site with no broadband?

Usually satellite, with 4G as a backup. On one site, set into a hill behind high retaining walls, mobile signal was unusable and the cabin itself blocked what little there was. Satellite broadband with an automatic 4G backup gave the site office fast, reliable internet from day one. Where the generator goes off at night, the site’s connection can run on battery, so it’s still up in the morning.

The kit belongs to you and moves with you to the next site. We set it up, watch it and fix it, so the site manager never has to. Printers, scanners and Wi-Fi for subcontractors come as part of the same set-up, with visitors kept off the network your business uses. When the satellite connection changes address, the security around the site’s printers and scanners updates itself, so nothing stops working and nothing is left open.

How do we stop payment fraud with suppliers and subcontractors?

Most of it starts with an email: a supplier’s “new bank details”, an invoice that looks right, a message that seems to come from you. We lock down your email domain so faked email is rejected, filter what arrives before staff see it, and train staff to check any change of bank details by phone, on a number they already hold.

CIS adds another layer. You hold subcontractors’ tax references and bank details, so access to them should be limited to the people who process payments, and protected with multi-factor sign-in.

Related insights

Useful reading for construction firms

Illustration of a site cabin with a satellite dish and wifi signal

How Do You Get Reliable Internet on a Building Site With No Broadband?

Most sites will never see a fixed line. Here is what actually works for site internet in Northern Ireland: satellite,

Illustration of a laptop showing an email warning beside an invoice and a hard hat

How Does Payment Fraud Hit a Building Firm, and How Do You Stop It?

Construction moves large sums to a long list of suppliers and subcontractors, often on the strength of an email. That

Illustration of a locked folder of documents beside coins and a hard hat

Who in Your Firm Can See Your Subcontractors’ Tax and Bank Details?

CIS means every building firm holds tax references, National Insurance numbers and bank details for its subcontractors. Here is where

Show more articles

Questions construction firms ask

Straight answers

Do our site staff need a full Microsoft 365 licence?

Often not. Staff who work mainly from a phone or iPad can use Microsoft’s frontline licences, which cost a fraction of a full office licence and still give them email, Teams and files, protected the same way. We set the split per person, so you only pay for what each role needs.

What happens if a site manager loses their phone or iPad?

Every device is managed. A lost one can be locked and wiped remotely, company data sits in protected apps, and nothing important lives only on the device.

How do we share drawings with architects and subcontractors?

Through a shared project space with named people, not email attachments or open links. Everyone works from the current drawing, and access ends when the job does. If the architect works in Autodesk Construction Cloud, we make sure your team can connect to it properly. How we support architects.

Do we need Cyber Essentials to win work?

Central government requires it for contracts that involve personal data, and it is a straightforward way to answer the security questions on tender and pre-qualification forms. INNOSEC certifies Cyber Essentials directly. For Cyber Essentials Plus, which needs an independent audit by a licensed assessor, we prepare you for that audit.

How do you protect us from ransomware and data loss?

Every device is monitored around the clock for signs of attack. Your files are backed up every night, with a copy held offsite that can’t be changed or deleted for 14 days, and restores are tested rather than assumed. If you ever leave us, your backup data is returned to you within 45 days, in a form you control.

We’re opening a new site. How quickly can the office be running?

A site office kit is the same every time: internet, router, Wi-Fi, printer and screen, prepared before it arrives on site, so the cabin works the day it is delivered.

Can you help us choose accounts or job-costing software?

We help you work out what you actually need before anyone sells you something. For builders that usually means tracking costs against each job and handling CIS. We test the options against those requirements, so the decision is yours with the facts in front of you. How we support accountancy practices.

Do you work with firms outside Northern Ireland?

Yes, we support construction companies across Ireland and the UK.

What does it cost?

Managed IT starts from £500 a month + VAT for firms of up to five users: around £100 per user per month, all-inclusive, with no onboarding fees. See what’s included and how that compares.

Next step

Talk it through with us

Book a 15-minute call. We will talk about how your business runs today, what is worrying you, and whether we are the right fit. If we are not, we will say so.

Not ready to talk? Take the 3-minute IT Ownership and Risk Self-Assessment.