How to Build A Simple Outdoor Fire Pit For Less Than $100
A simple outdoor fire pit can make a courtyard, backyard or rental garden more inviting without turning into a major landscaping project. With careful shopping and a compact design, it is possible to build a safe wood-burning fire pit for less than $100 in Australia, using readily available landscape blocks, gravel and a basic steel insert or ring.
The most important parts are location, local fire rules and heat-safe materials. A low-cost fire pit should still have a stable, non-combustible base, plenty of clearance from structures and an easy way to put the fire out. The following approach suits a modest entertaining area rather than a large open bonfire.
| Build option | Approximate cost | Best feature | Main limitation |
|---|---|---|---|
| Steel bowl on gravel | $50–$95 | Fastest installation | Smaller fire area |
| Block ring with steel liner | $70–$100 | Solid, built-in appearance | Needs careful levelling |
| Brick ring on pavers | $60–$100 | Flexible shape and finish | Bricks must tolerate heat |
| Portable chiminea or fire pit | $80–$100 | Easy to move or store | Less suitable for groups |
| Recycled metal drum | $20–$60 | Very inexpensive | May breach local rules or have unsafe coatings |
Choose A Safe Location And Check Rules
Begin by checking your local council website and state fire authority before buying materials. Rules differ between suburbs, councils and seasons. In Victoria, CFA restrictions can affect the use of outdoor fires; in New South Wales, the RFS provides guidance on fire danger periods and total fire bans. Queensland, Western Australia and South Australia have their own requirements, and some councils prohibit solid-fuel fires in built-up areas altogether.
A fire pit may also count as an outdoor fire, brazier or backyard incinerator under local regulations. Look for information from your council, Fire and Rescue NSW, Country Fire Authority, DFES or Queensland Fire and Emergency Services, depending on where you live. During a Total Fire Ban or other prohibited period, do not light it simply because the weather looks calm. Rules can also cover smoke, nuisance, wind and how close the fire is to neighbours.
Select a level spot at least several metres from the house, shed, fence, pergola, clothesline, trees and stored timber. Avoid areas beneath eaves or low branches. Keep the pit away from dry grass, garden mulch and synthetic turf, which can melt or catch fire. A clear patch of soil, concrete or paving is safer than a lawn surrounded by flammable garden materials.
Gather Budget Materials That Can Handle Heat
For a small circular pit, plan on a diameter of roughly 700 to 900 millimetres. This is large enough for a useful fire but compact enough to control. A typical shopping list includes 20 to 30 heat-rated retaining wall blocks or fire pit blocks, one steel fire ring or bowl, a bag of drainage gravel, a few pavers for the base and a metal spark screen if the budget allows.
Prices vary between Bunnings, Mitre 10, independent landscape suppliers and local marketplace listings, but the materials can often be kept below $100. A basic steel ring may cost around $30 to $50, while pavers and gravel can add another $25 to $40. Look for end-of-line blocks, second-hand pavers or leftover landscaping materials on Gumtree and Facebook Marketplace, checking them for cracks and unknown coatings before use.
Do not use painted, pressure-treated or galvanised metal inside the fire. Galvanised coatings can release unpleasant and potentially harmful fumes when heated, while paint and treated timber are unsuitable for burning. Ordinary concrete products may crack or spall under repeated high heat, so choose products specifically described as fire-rated, heat-resistant or suitable for fire pits whenever possible. Never substitute plastic edging, decorative resin blocks or lightweight garden wall products.
Build The Fire Pit Base And Walls
Mark the circle using a stake, string and a small amount of spray chalk or flour. Remove grass, roots and loose mulch from the area, then excavate approximately 75 to 100 millimetres. A shallow excavation stops the base from shifting and creates a clear mineral zone around the fire. Check the local ground conditions first, particularly if the yard contains irrigation lines, drainage pipes or buried electrical cables.
Add a compacted layer of road base or crushed rock, followed by several centimetres of coarse gravel. Tamp it firmly with a hand tamper or the flat end of a short piece of timber. Lay a ring of pavers over the compacted surface and check them with a spirit level. Adjust the gravel beneath individual pavers until the whole circle is stable and reasonably even.
Place the steel fire ring in the centre, then arrange the first course of blocks around it with small, consistent gaps. Stagger the joints in the next course so each block overlaps the joint below. Two courses are generally enough for a low backyard fire pit; a taller wall can restrict airflow and make the fire harder to supervise. Keep the inner wall clear of loose gravel, and do not permanently mortar the blocks unless the product instructions approve it.
Before lighting anything, push gently against the wall from several directions. It should not rock, slide or have a noticeable lean. Leave an open area of gravel around the pit rather than filling the surrounding space with bark chips. If children or pets use the yard, consider a removable spark screen and a simple barrier that keeps them away from the hot metal.
Light The Fire Responsibly
Use dry, untreated firewood from a reliable source. In many Australian areas, firewood movement is regulated to help prevent the spread of pests and plant disease, so buying locally is sensible. Hardwood offcuts, fallen branches that have fully dried and split logs work well. Never burn painted timber, MDF, particleboard, pallets with unknown markings, household rubbish or glossy paper, as these can produce toxic smoke and excessive sparks.
Start with a small amount of kindling and two or three dry logs rather than filling the bowl. Leave space between pieces so air can circulate. Avoid petrol, kerosene and other accelerants; they can flash back towards the person lighting the fire. A long lighter or match, dry kindling and patience are safer and usually just as effective.
Wind can carry embers across a yard, onto a roof or into a neighbour’s property. Do not use the fire on a windy evening, during hot and dry conditions or when smoke is blowing towards nearby homes. Keep a hose connected and ready, with a bucket of water or sand close by. The fire should be supervised continuously by a sober adult, and children should remain outside the clear zone.
When the evening ends, spread the logs so they stop burning actively, then douse them thoroughly with water. Stir the ash and embers with a long metal tool, add more water and repeat until everything is cold to the touch. Do not assume a fire is out because it has stopped glowing; coals can remain hot for hours, especially inside a steel bowl.
Keep The Project Affordable And Long-Lasting
The easiest way to stay under budget is to keep the design small and avoid unnecessary finishes. Decorative caps, coloured gravel, built-in seating and permanent paving can quickly take the project beyond $100. A simple compacted gravel pad with two courses of heat-rated blocks will look tidy and can be upgraded later if the fire pit becomes a regular part of the backyard.
Transport costs can also affect the final price. Landscape blocks and gravel are heavy, so compare delivery charges with the cost of collecting them in a trailer or borrowing a ute. Buying one type of block in a standard size reduces waste and makes the circular layout easier. Ask a local landscape yard about slightly weathered stock or discontinued colours, which may be sold at a discount without affecting performance.
Protect the pit between uses by removing ash once it is fully cold and keeping the bowl dry. A fitted cover or upside-down steel lid helps prevent rainwater collecting in the base, though it must be removed before lighting. Inspect the blocks and steel ring at the start of each season. Replace cracked pieces, clear blocked drainage and move the pit if nearby plants have become overgrown.
A well-positioned fire pit can provide warmth and atmosphere without dominating a small Australian backyard. Measure the available space, confirm the rules for your suburb, buy heat-safe materials and build the base carefully. Once the pit is complete, keep water, tools and a spark screen nearby so every fire remains controlled from the first flame to the final cold ember.