About us

Passionate about your security

Locked Security Doors brings over 25 years of manufacturing experience to Melbourne's northern suburbs.

25+ years on the tools

We make doors. Properly.

Locked Security Doors exists because too many security doors are sold by salespeople and fitted by whoever's available. We do it the old way: the tradesman who measures your door is the one who installs it. That tradesman is Franz, ex-carpenter, ex-commercial construction manager, owner of this business, and a card-carrying perfectionist. If a door isn't sitting perfectly square, it gets fixed before he leaves.

The doors themselves are Australian made by specialist factories we know personally and have worked with for decades. We're based behind High Street in Preston, and our service area is the suburbs we actually live in: Melbourne's north. Quick site visits, honest lead times, and a warranty backed by people you can find.

Behind the brand is over 25 years of manufacturing experience and more than 10,000 doors and screens fitted across Melbourne.

What we stand for

The non-negotiables

Australian made

Every security door is made in Australia by specialist fabricators we've trusted for decades.

Measured twice

Every opening measured on site before anything gets made. It's why our doors don't rattle.

7-year warranty

Long enough to mean something, backed by the people who built the product.

10,000+ installs

Old terraces, new builds, odd-sized openings, we've fitted them all.

Trade skill

Real fabrication and installation experience, not a sales script.

Local for real

Based in Preston, servicing the north. If we're not nearby, we don't take the job.

Our team

Meet the team

Franz

Owner & Lead Installer. Preston local Franz started as a chippy, then spent years running large commercial builds as a project manager and construction manager, so he's a perfectionist about measurements, schedules and finish in a way only ex-construction people are. Security doors run in the family too: his brother-in-law and their dad have been manufacturing and installing them for decades. Franz has personally fitted thousands of doors across Melbourne, and if you book a quote, he's the one knocking on yours.

Scott

Measure & Install. Another ex-construction manager who swapped site sheds for security doors. Scott measures and fits across the north with the same eye for detail Franz has, which is saying something. Between them they've run jobs a lot bigger than your front door, and it shows in the finish.

Minty

Security Consultant (Canine Division). Minty rides shotgun in the van on most jobs. Duties include perimeter inspections, supervising the install from a respectful distance, and personally testing every pet door we fit. Yet to approve a dodgy hinge.

Reviews

What our customers say

★★★★★

"The best part which made me leave this review was the installation. Super professional, clean, nice and tidy job was done."

- Google review
★★★★★

"The team did a wonderful job installing our new security door and we are very happy with the quality of the product and service provided! Couldn't recommend them more highly!"

- Simon H.
★★★★★

"Great product, amazing attention to detail, better pricing, friendly service, clean up after job complete."

- Pauline W.
Free measure & quote

Ready to lock it in?

Book a free measure and quote at your place, we'll size it up, talk options and give you a firm price on the spot. No fees, no pressure.

Request a Free Quote Or call 1300 000 000