Restumping in Melbourne's Northern Suburbs

Period homes on hard-working ground

Much of Melbourne's north was built in waves from the late 1800s through the interwar years, and later post-war homes filled in Reservoir and Pascoe Vale. The result is a mix:

• Victorian and Edwardian weatherboards and brick homes in Brunswick, Northcote and inner Coburg, often with original timber stumps or a combination of stumps and brick piers.
• Californian bungalows through Coburg, Thornbury, Preston and Pascoe Vale, with deep verandahs, low-pitched roofs and suspended timber floors.
• Post-war weatherboards and brick veneers further out in Reservoir, Preston and Pascoe Vale.

Many of these houses have been extended at the back, sometimes more than once, and the junction between old and new is a common trouble spot.

The basalt clay problem

Large parts of the north sit on heavy clay formed from ancient lava flows across the basalt plains. Locals know it as the ground that cracks open in summer and turns to thick mud in winter. That cycle is the main reason northern suburbs homes move so much:

• In wet months the clay swells and can push stumps upwards, especially around the edges of the house.
• In dry months it shrinks and pulls away, letting stumps drop.
• Gardens, trees and leaking pipes create wet and dry spots under the same house, so it moves unevenly.

Owners in Preston, Reservoir and Coburg often notice doors that stick in winter and swing freely in summer, or cracks that open and close with the seasons. Some of that is normal on this ground, but when it gets worse every year, or the floor has a permanent slope, the stumps are usually involved.

Footing design matters more here than almost anywhere in Melbourne. New stumps on reactive clay generally need deeper, larger footings to sit below the most active soil, and the building surveyor may ask for soil information before approving the design.

Protecting period features

Restumping a period home is not just a subfloor job. Lifting and re-levelling a house can affect:

• Ornate plaster ceilings and cornices, which can crack as the house moves back to level.
• Original timber floors, which need careful packing to avoid squeaks and gaps.
• Leadlight windows and old doors, which may need easing once the frame is straight again.
• Front verandahs and tessellated tiles, which often sit on their own footings.

We re-level gradually and talk through what to expect so there are no surprises when ceilings settle. Where a house has dropped a long way over many years, it is sometimes better to bring it most of the way back rather than force it perfectly level, to limit stress on old plaster and joinery.

Heritage overlays in the north

Darebin and Merri-bek councils have extensive heritage overlays across Northcote, Thornbury, Brunswick, Coburg and parts of Preston. A standard restump that does not change the look of the house from the street is usually straightforward. If the job involves raising the floor, replacing visible base boards or a brick plinth, or altering the front verandah or steps, council may need to approve a planning permit before the building permit. We check this at the inspection.

Concrete or steel?

Reinforced concrete stumps are a reliable choice for most northern homes. On very reactive clay, adjustable galvanised steel stumps let the floor be fine-tuned later if seasonal movement continues. Where a house has original brick piers in good condition, these can sometimes be kept and only the failed stumps replaced.

Suburbs we cover in the north

Brunswick, Brunswick East and West, Coburg and Coburg North, Pascoe Vale and Pascoe Vale South, Northcote, Thornbury, Preston, Reservoir, and neighbouring streets. If you are just outside this list, ask and we will let you know.