Restumping in the Dandenong Ranges and Foothills

Why hills homes need a different approach

Down on the flat, a restump is mostly about replacing like with like. In the Dandenongs and their foothills, the block itself shapes the job. A house that sits close to the ground at the front door may be well over head height at the back, with long stumps carrying the floor out over the slope. Those tall stumps take more load sideways, so they need proper bracing and well-designed footings, not just a taller version of a standard stump.

The houses you find up here

• Foothills family homes. Boronia, Bayswater and the lower parts of Ferntree Gully filled with weatherboard and brick veneer homes from the post-war decades through the 1970s, many on gently or moderately sloping blocks.
• Hills cottages and split-levels. Upwey, Belgrave and the Montrose hillsides have older timber cottages, weekenders that became permanent homes, and split-level houses built into steep slopes.
• Additions and decks. Many hills homes have been extended over time, with rooms or decks built out on their own tall posts. These often move differently from the main house.

Damp, shade and rot

The ranges get more rain than the suburbs below, and big trees, fern gullies and south-facing slopes keep a lot of subfloors in shade. Water running down the slope often finds its way under the house, especially where the uphill side has been cut in and there is no drainage behind it. The result is subfloors that rarely dry out properly.

That is hard on timber. Original timber stumps, bearers and joists in hills homes often rot faster than in the same type of house on the flat, and wet ground can also soften the soil around footings. Termites like the same conditions. When we inspect a hills property, we look closely at:

• Moisture and drainage under and around the house, including where water is coming from.
• Subfloor ventilation, because a stuffy subfloor holds damp.
• The condition of bearers and joists, not just the stumps.
• Bracing on tall stumps and whether it meets current expectations.

Restumping without dealing with obvious water problems tends to shorten the life of the new work, so we will tell you if drainage needs attention as well.

The ground underneath

Soils through the ranges are typically deep red and brown clays and clay loams, which can hold a lot of water and lose strength when saturated. Lower in the foothills the ground shifts towards the clay soils common across the eastern suburbs. On steep sites the surveyor may want soil or engineering input on the footing design, particularly for tall stumps on the downhill side.

Access on steep blocks

Many hills properties have steep or narrow driveways, stairs down to the house, or no vehicle access close to the subfloor at all. Concrete, stumps and spoil may need to be moved by hand or with small machinery, and the crew needs safe working space on the slope. This adds time, and it is one of the main reasons hills restumps are quoted only after a site visit.

Concrete or steel on a slope?

Both can work. Reinforced concrete stumps suit most heights, with bracing added as needed. Adjustable galvanised steel stumps are often useful on tall subfloors because they allow fine adjustment and are lighter to carry onto awkward sites. Your site, the stump heights and the surveyor's requirements decide which makes more sense.

Bushfire overlays

Parts of the ranges sit within a Bushfire Management Overlay. Restumping does not usually change a home's bushfire rating, but if the job includes new decks, subfloor enclosures or base cladding, the overlay can affect materials and approvals. We will raise it if it applies.

Where we work in the hills

Bayswater, Boronia, The Basin, Ferntree Gully and Upper Ferntree Gully, Upwey, Tecoma, Belgrave, Montrose and Kilsyth, plus the nearby hills suburbs. If you are not sure we can get to you, ask when you book.