Renovation & Extension Plumbing — Gold Coast & Northern NSW

Create the Home You Want, Without the Plumbing Headaches

Renovations should feel exciting: a spa-style bathroom, a kitchen that flows outdoors for summer dinners, an outdoor shower by the pool. The reality is that plumbing is the backbone of those spaces — if it’s undersized, poorly planned, or rushed, you inherit leaks, rework, failed inspections, and blown budgets.

BWJ Plumbing & Gas plans and installs renovation plumbing that’s safe, compliant and built to last. We integrate new work with existing pipework, size hot water correctly for your family, coordinate with your builder and other trades, and hand over with documentation so you can enjoy the space — not babysit it.

Book Your Renovation Plumbing Consult

Lock in plumbing that supports the way you want to live — indoors and out. Share your plans and we’ll map the services, schedule the rough-in/fit-off, and size hot water correctly for the new layout.

Book a renovation plumbing consult — get a clear plan, schedule and quote.

Prompt Response

Thorough Assessment

Upfront Pricing

Quality Workmanship

Guaranteed Results

What We Do for Renovations & Extensions

Bathrooms

New layouts, rough-in and fit-off, waterproofing interface managed, premium fixtures installed correctly.

Kitchens

Sinks, mixers, dishwashers, water filters, fridge lines, gas cooktops/ovens, correct fall and venting.

Outdoor Living

Outdoor showers (coastal-ready), alfresco sinks, BBQ gas points, garden taps, drainage that won’t pond.

Hot Water Upgrades

Electric, gas or heat-pump units sized for new bathrooms and long runs.

Roof & Gutter Additions

Rainwater connection points, compliant overflows, neat colour-matched finishes.

Under-Slab & In-Wall Pipework

New lines for extensions, pressure-tested before close-up.

Rainwater Systems

Tank installation, pump replacement,

filtration install and maintenance for whole-home or garden use. 

Our Renovation Process

(Clear, Builder-Friendly)

1. Consult & Scope

Review plans, walk the site, confirm fixture schedule, hot-water demand and drainage routes.

2. Quoted Options

Practical choices (repair vs replace/relocate), with inclusions and allowances spelled out.

3. Rough-In

Under-slab and in-wall services installed, pressure-tested and photographed before close-up.

4. Fit-Off

Fixtures and appliances installed precisely; gas work tested and certified.

5. Commission & Handover

System testing, compliance documentation and care notes provided.

6. Trade Coordination

We sequence works around tilers, sparkies and carpenters to minimise disruption and re-visits.

What We Do for Renovations & Extensions

Avoid re-work and delays

Fix the layout and pipe sizing before walls close.

Pass inspection first time

Build to Australian Standards with licensed plumbers and gas fitters.

Protect your investment

No hidden leaks behind brand-new tiles or cabinetry.

Future-proofing

Allow for the next bathroom, the outdoor kitchen, or a future granny-flat connection.

Design for comfort & efficiency

Consistent pressure, shorter hot-water wait times, water-saving fixtures that reduce bills.

Why Choose BWJ Plumbing & Gas

20+ years’ experience delivering renovation plumbing that integrates cleanly with existing homes.

Licensed & insured plumbers and gas fitters; workmanship warranty on completed work.

Detail-driven installs – neat penetrations, square setouts, correct levels and falls.

Transparent communication – clear timelines, progress updates, photos before close-up, straightforward variations.

Gold Coast lifestyle focus – outdoor showers, alfresco kitchens and coastal-ready materials done right.

Frequently Asked Questions

Common Questions About Our Renovation Plumbing Services

Do I need council approval for my plumbing changes?

Some renovations do. We’ll advise what’s required, liaise with your builder, and ensure work meets Australian Standards.

Can you help with sequencing and trade scheduling?

Yes. We coordinate rough-in and fit-off around other trades and can provide a practical schedule so work flows without clashes. 

Can you relocate my hot water system?

Often, yes. We’ll check venting, clearances and pipe runs, then recommend the best position and system size for your new layout.

Do you install outdoor showers and alfresco kitchens?

Absolutely. We build coastal-ready outdoor showers and install water/gas points for BBQs and sinks, with drainage that suits outdoor surfaces.

Can you install rainwater tanks, pumps and filtration?

Yes. We supply/fit tanks, replace pumps, and install filtration so the system is reliable and easy to service.

What if older pipework is uncovered during demolition?

We’ll document what we find, price options clearly, and only proceed with your approval.