Pool placement in Australian backyards was not always planned with future removal in mind. On older Southern Highlands properties, particularly those developed in the 1970s, 80s and 90s, it’s not unusual to find a pool tucked close to an existing shed, garage, studio or carport. Sometimes the outbuilding was there first and the pool was wedged in beside it. Sometimes the pool came first and subsequent outbuildings were built close by. Either way, proximity to a structure complicates pool removal.
This guide addresses the specific considerations that arise when a pool is adjacent to an outbuilding, covering access, structural risk management and what a contractor needs to plan for.
Quick Answer (BLUF)
Pool removal near a shed, garage or outbuilding is achievable but requires more careful planning than an open-site removal. The main concerns are: confined machine access, vibration from hydraulic breaking potentially affecting the adjacent structure, excavation proximity to the outbuilding’s footings, and ensuring the backfill is compacted in a way that won’t cause future settlement against the building. An experienced contractor will assess all of these at the site inspection stage and price accordingly. This is not a DIY project.
Why Proximity to Structures Matters
When a pool is removed in an open garden setting, the contractor has generous clearance to operate machinery, and the only structural concern is the pool shell itself. When a shed or garage is adjacent, several additional risks emerge:
Footing proximity. Sheds and garages have footings (even simple slab-on-ground structures have edge beams). If the pool wall is very close to a footing, demolition of the pool wall must be done with care to avoid undermining or disturbing the footing. In the worst case, a pool wall that’s been bonded or built against a building footing may require specialist demolition approach.
Vibration. Hydraulic rock hammers used to break concrete pool shells generate significant vibration. Vibration transmits through the ground and can affect adjacent structures, particularly older buildings with unreinforced masonry walls, un-tied weatherboard cladding, or older roof structures. The risk is usually manageable if the distance is adequate (generally 2m or more), but very close proximity may require limiting hydraulic hammer use and hand-breaking sections near the building.
Machine access clearance. A tracked excavator needs working room, typically 1.5-2m on the operating side to manoeuvre and position the boom effectively. If the pool sits within 1m of a shed wall, the excavator may not be able to work from that side, requiring the approach to be entirely from the opposite side or the ends. This complicates the sequence and may add time.
Material handling. Broken pool shell material must be loaded into trucks. If truck access is restricted to one end of the property and the pool is sandwiched between structures, the workflow for loading becomes more complex.
Practical Scenarios
Pool wall directly against a shed wall
This is the most challenging scenario. It sometimes occurs when a shed was built to use the pool fence or pool wall as a side. In this case:
- The shared wall section must be identified and the structural relationship assessed
- The pool demolition must be sequenced carefully to avoid destabilising the shed
- Manual demolition (hand tools, angle grinder) may be used for the sections immediately adjacent to the building
- An engineer may be required to assess the structural independence of the two structures before work starts
Pool 1-2m from an outbuilding
A more common scenario. At this distance:
- Machine access may be restricted on that side, requiring creative sequencing
- Vibration is managed by limiting hammer use close to the building and using the excavator bucket’s push-pull force for close sections
- Standard demolition is achievable with careful approach
Pool 2-3m or more from an outbuilding
At this distance, the proximity is manageable in most cases without significant modification to standard methodology. The contractor notes the outbuilding’s presence, ensures machine clearance is planned, and proceeds.
What Your Contractor Needs to Check
A responsible site inspection for a pool adjacent to an outbuilding will cover:
- The building’s construction type. A concrete slab-on-ground garage is more robust than a timber-framed weatherboard shed. An older brick outbuilding is more vibration-sensitive than a steel-frame structure.
- The separation distance. Measured from pool wall (not pool coping) to the nearest structural element of the building.
- Footing depth and type. If available, checking any plans for the outbuilding reveals footing depth. Without plans, a rough probe or discussion with the owner about when the building was constructed helps.
- Machine access route. Confirming the excavator’s access path, working positions and truck access for loading.
- Services. Any power conduits, water pipes or drainage running between the pool and the outbuilding must be identified and managed.
Vibration Risk Management
For hydraulic hammer work close to an outbuilding, contractors typically apply some or all of the following:
- Distance limits. Restricting hydraulic hammer use to sections of the pool more than 2m from the building, and using alternative methods closer in
- Visual monitoring. Having a crew member watch the adjacent building for any signs of cracking or distress during heavy breaking
- Pre-work condition survey. Photographically documenting the existing condition of the adjacent building before work starts, critical for any potential damage claim management
- Hand-demolition near the building. Using a cold chisel, angle grinder and manual force for pool sections within 1-1.5m of the building
Our property protection guide covers how contractors protect adjacent property during removal more broadly.
Backfill and Compaction Against the Building
When backfilling the pool excavation, the section adjacent to the outbuilding requires careful attention. Over-compacting with a heavy plate compactor right against a building footing can transmit lateral force to the footing and potentially crack an older slab edge.
Good practice is to compact manually or with a smaller, lighter compactor within 300-500mm of the building, and to use standard compaction equipment in the open areas. The layering sequence remains the same, compaction is simply applied more carefully at the interface.
FAQs
Do I need an engineer’s report if my pool is against a shed?
For most residential sheds and garages, a formal engineering report is not required, your contractor’s professional assessment is sufficient. However, if the outbuilding is a significant structure (a large workshop, a garage with a habitable space above, or an older building of heritage significance), commissioning a brief structural assessment before work starts provides both you and the contractor with confidence and protects all parties if any incidental damage occurs.
What if the shed shares the pool fence as one of its walls?
This is not uncommon on older rural properties. In this scenario, the “pool fence” wall is structurally part of the shed, it can’t simply be demolished as pool waste. The approach is typically to retain that wall, remove the other three pool walls from the opposite side, and then assess the retained wall’s status (it may need modification or partial removal once the pool shell beneath is gone). Your contractor will need to inspect and plan this specifically.
Will removing a pool affect my shed’s concrete slab?
If the pool is adjacent to but separate from the shed slab, and proper care is taken during demolition and backfill, the shed slab should not be affected. The main risk is vibration from heavy breaking, mitigated by working carefully near the slab edge and avoiding heavy hammer use within 1.5m of the slab. If you have an existing crack in the shed slab, photograph it before work begins to establish pre-existing condition.
What access width is needed for the excavator?
A compact tracked excavator (1-1.5 tonne class) needs approximately 900mm-1.0m of working width. A standard 2-3 tonne excavator needs 1.5-1.8m. If access between the pool and the outbuilding is very tight, discuss with your contractor, a smaller machine may be possible for the confined section, with the larger machine handling the open portions.