Who may build what. CBOS licenses builders in four classes, Domestic, Low Rise, Medium Rise and Open, and none of them is a landscaping class. What decides who can build a garden structure is the Director of Building Control's Determination on categories of building and demolition work (version 1.4, applying since April 2021). Category 1 low-risk work, which an owner, a competent person or a licensed builder may do without a permit, includes a retaining wall holding up to 500 mm of ground within 1.5 m of a boundary, road or right of way and up to 1.2 m elsewhere, set back from any building by at least its own height; masonry or concrete fences and walls to 1.2 m and other fences to 2.1 m; unroofed decks less than 1 m above the ground; pergolas, arches and trellis up to 36 m² and 3.5 m high, left open or covered with a permeable material such as shade cloth, and without masonry; and gazebos or garden shelters up to 18 m². Category 2 covers low-risk work reserved for a licensed builder, with a few items open to a competent person; an engineer-designed wall retaining up to 1.8 m is one of the builder-only items. Bigger structures are notifiable work, which a building surveyor has to assess and certify before it starts. Swimming pools and spas are notifiable work too, and the Determination says a pool's access barrier must be built by a licensed builder. Stormwater drainage is plumbing work for a licensed plumber. Residential contracts for building work of $20,000 or more carry rules of their own, set out on our page for Hobart builders.
The limits that catch garden jobs. Low-risk work also has to meet the Determination's standard limitations. Cut or fill within 1.5 m of a boundary is capped at 500 mm, and further in at 1.2 m, or 1.8 m for a licensed builder. Work in a bushfire, landslip, flood or coastal hazard area can be lifted from low-risk to notifiable. Nothing may be built over an existing drain or within a metre of one without the council general manager's written consent, inside a service easement without the consent of whoever it was created for, or within 2 m of TasWater infrastructure. On Hobart's hillsides the hazard rules matter more than most: our builders page explains the Landslip Hazard Code and the declared landslip areas, and owners can check their own block's overlays on LISTmap. A site that says you check them before quoting, and bring in an engineer or building surveyor when a wall needs one, reads as experience rather than caution.
Nature strips and trees in the City of Hobart. The adjoining resident looks after the nature strip, and the council's guidelines allow lawn, native grasses such as poa, lomandra and dianella, or low shrubs and groundcovers, with no application needed when the rules are met. Plants stay under 600 mm, or 300 mm on a corner, and sit 500 mm back from both the kerb and the footpath; where there's no footpath, 1.5 m from the property line stays as lawn or mulch. Digging is done by hand after a Dial Before You Dig enquiry, and bark mulch of 12 to 25 mm can go down 75 mm deep. Irrigation, artificial turf, concrete, rocks, sleepers, pavers, retaining walls and prickly or woody plants are not allowed, and residents may not plant, prune or remove street trees. Beyond the verge, the Significant Tree Code in the Tasmanian Planning Scheme for Hobart lists trees from the National Trust's register and public nominations, shown on the council's interactive map. Glenorchy, Clarence and Kingborough are separate councils with their own rules, so a verge or tree page should name the council it describes.
Fire, wind and rain. Tasmania Fire Service puts about 98% of the state's land area in bushfire-prone areas, and our page for Hobart tradies covers hazard management plans and BAL ratings. For a landscaper, the useful part comes after the house is finished. Kingborough Council notes that permit conditions often leave owners responsible for keeping their property to the approved bushfire hazard management plan, and that work beyond the plan can need a new permit and a revised plan from an accredited practitioner. Maintaining a hazard management area, or reworking a garden inside one, is a service worth naming, and the Greater Hobart flammability guide, in print from the City of Hobart and online through the Sparking Conversations, Igniting Action program, gives you a local reference to cite. The Bureau's Ellerslie Road records, kept since 1882, average 610.5 mm of rain a year and about 1.3 nights a year at or below freezing, but that station has also logged a 150 km/h gust, and Hobart Airport West averaged 491.8 mm a year between 1958 and 2022.
Plants from the mainland. Biosecurity Tasmania requires plants brought into the state to be free of soil, pests, diseases and weeds, labelled with their scientific names, and covered by a notice of intention lodged at least 24 hours before they leave. If you bring advanced trees or particular cultivars from interstate, a line saying you handle that paperwork helps; if you grow or buy in Tasmania, say that instead. We're an Adelaide team and work with Hobart landscapers by phone and email, at the same prices as anywhere else. Our current clients are in SA, NSW, VIC and QLD, and we haven't yet built a site for a Tasmanian business.