Costa Mavros — 13 years in window replacement across Berwick.

Costa grew up in Berwick and has worked in window replacement here for 13 years. That matters more than the years on the ticket — the Berwick ground, the Berwick weather, the Berwick permitting process, and the Berwick suppliers are the things you only learn by doing the work in the place. There are tradies who can do window replacement anywhere; we only do it here, and we'd rather pass a job to a mate than do a job in a suburb we don't know.

The Berwick side of it.

Berwick is not a market we read about; it's the market we live in. Costa volunteers at the Cardinia 4WD club track-clear weekends — the kind of detail that doesn't fit on a quote but does explain why the crew is on time, why the price doesn't drift, and why we'd rather pass a job to a mate than do work in a suburb we don't know. Every quote we issue is from someone you can put a face to.

Credentials & memberships.

• AGWA member
• AS 2047 compliant
• Public liability + workmanship insurance current; certificates available on request.
• Written, fixed-price quotes (no "from $X" range pricing).
• Same-person quoting and supervision — not a call-centre handoff.

One person, start to finish.

Costa quotes the job and runs the crew that does the job. There is no handover, no junior estimator who lowballs the quote then upcharges on the day, and no third-party project manager who hasn't been on a job site in five years. If you ring at 7pm on a Wednesday, you get the person who's going to be on your property on Monday morning.

Written, fixed-price quotes.

Every quote we issue is all-inclusive — site assessment, weather risk, access risk, permit work if relevant. No "from $X" range pricing, no day-of-build surprise variations, no mid-job upsell. If a surprise lands on the dig that we did not allow for, it's our cost, not yours.

A crew that stays the same.

The Berwick crew is the same five people it has been for four years. We don't sub work out to chase-cheap labour-hire crews, we don't put apprentices on a job without a registered tradesperson actively supervising, and we don't run a roster of fly-in workers. Continuity is what makes the work hold up at the 10-year mark.