Five Costs Homeowners Often Miss When Budgeting for a Swimming Pool

Authored by: Terry Johnston

When homeowners start planning a swimming pool, the first number they usually look at is the price of the pool itself.

That makes sense, but it rarely tells the full story.

A fibreglass pool is not simply delivered and dropped into the backyard. It forms part of a larger construction project that may involve excavation, machinery access, engineering, drainage, fencing, paving, landscaping and repairs to the surrounding property.

The pool shell may be the most obvious expense, but it is often the work around the pool that causes the biggest budget surprises.

In my experience, the homeowners who feel most comfortable during construction are not always those with the biggest budgets. They are the ones who know what the complete project is likely to involve before the first machine arrives.

Here are five costs that are commonly overlooked.

1. Excavation and site access

Not all backyards are equally easy to excavate.

A flat block with wide side access may allow a large excavator and truck to move in and out quickly. A sloping property with a narrow side path, established gardens or nearby buildings can require a completely different approach.

Restricted access may mean using smaller machinery, removing soil by conveyor, bringing in a crane or paying for additional labour. The work may also take longer because less material can be moved at one time.

Ground conditions matter too. Rock, unstable soil or groundwater can change how the excavation is carried out and what it costs.

I have seen homeowners compare two quotes and assume one builder is simply more expensive. In reality, one quote was based on easy access, while the other allowed for the actual conditions at the property.

Before relying on a price, ask what the builder has assumed about access, soil conditions, excavation and soil removal.

2. Retaining walls and structural work

On a sloping block, installing a pool is rarely as simple as digging a hole.

The project may need retaining walls, reinforced concrete, structural supports, additional engineering or changes to the surrounding ground levels. Without this work, the area around the pool may not be stable, level or practical to use.

These costs are often quoted separately, so they may not appear in the initial pool price.

They can also change the layout of the whole backyard. A retaining wall may affect where the pool can sit, how people enter the area and where paving, gardens or fencing can be installed.

This is why the pool and the surrounding space should be planned together. Deciding on the pool first and dealing with the rest later can create expensive design problems.

3. Drainage and water management

Drainage is not the part of a pool project that homeowners get excited about, but poor drainage becomes very noticeable once it rains.

Installing a pool changes how water moves through the backyard. New paving, retaining walls and changes in ground level can send water toward the house, the neighbour’s property or the pool.

Depending on the site, the project may need surface drains, new stormwater connections, changes to ground levels, agricultural drainage or other measures to control water.

It is much cheaper to solve these issues before the paving and landscaping are finished. Once water starts pooling in the wrong place, fixing it may mean lifting completed surfaces and redoing part of the backyard.

A proper plan should answer three basic questions: where will the water come from, where will it flow and how will it leave the property?

4. Fencing, paving and landscaping

Many homeowners prepare a pool budget but not a budget for the finished backyard.

The pool may be installed, but the area still needs to be safe, compliant and usable. That can include fencing, paving, decking, turf, garden beds, lighting, steps, outdoor showers and screening for the pool equipment.

Individually, some of these items may seem manageable. Together, they can add a significant amount to the project.

They are also connected. The fence position affects how much usable space remains. Paving levels affect drainage. Garden choices affect maintenance. The equipment location can influence both noise and the appearance of the finished area.

A practical way to manage the budget is to separate the work into three groups:

• Essential work needed for construction, safety and compliance
• Functional work needed to make the area comfortable and usable
• Optional finishes that can be added later

This gives homeowners room to adjust the budget without removing work that the project genuinely needs.

5. Site restoration and unexpected work

The construction zone usually extends beyond the outline of the pool.

Machinery may travel across lawns, driveways or garden beds. Sections of fencing may need to be removed. Soil and building materials must be moved through the property. Irrigation lines, drainage pipes or other services may need to be relocated.

Even when the pool installation goes smoothly, homeowners may still need to repair turf, gardens, paving, fencing or access areas once construction is complete.

It is also sensible to keep some money aside for conditions that cannot be confirmed before excavation begins.

Old concrete, buried pipes, unexpected rock and poor soil are not always visible during the quoting stage. Even an experienced builder cannot guarantee exactly what will be found underground.

This does not mean assuming the project will go badly. It simply means avoiding a budget where every dollar has already been committed before digging starts.

Plan the complete project, not just the pool

A realistic pool budget should cover the full project, from the first day of excavation to a safe and usable backyard.

Before accepting a proposal, check what is included, what is excluded and which prices are only allowances. Make sure the quote reflects the actual access, slope, soil, drainage and surrounding work required at your property.

A lower starting price does not always produce a lower final cost.

The best budget is not necessarily the cheapest one. It is the one that gives you a clear idea of what the completed project will cost before construction begins, rather than revealing major expenses halfway through the build.

Author byline: Terry Johnston is the owner of Tranquility Pools and an experienced business leader with a background in engineering, project management and operational improvement. After leading complex projects, multidisciplinary teams and significant budgets across technical and commercial environments, Terry entered the fibreglass pool industry in 2019 with a clear objective: to bring greater structure, transparency and planning to an industry often associated with unclear pricing and unexpected project costs.