What drives the scope and budget of a villa pool in Phuket

Site and access

The site often shapes the budget before anyone talks about the pool itself.

• Access for machinery and materials: narrow lanes, steep driveways and finished gardens can mean more work by hand and careful protection.
• Where the excavated soil and rock go, and how far they have to travel
• Space to store materials and to work around a villa that is lived in or a hotel that is open
• The distance from the pool to the pump room and to the water and power supply

Soil, slope and groundwater

Phuket's hillsides and coastal flats bring different challenges. Rock sometimes has to be broken out. Soft or filled ground can need more engineering beneath the shell. On a slope, one side of the pool can stand above ground and need retaining walls. Near the coast or on low ground, groundwater, garden runoff and monsoon flooding affect both the shell and where the pump room can go. Where garden water floods into a pool, besides raising the pool edge we can install perimeter drainage channels around the pool to take runoff away. High groundwater also means dewatering during construction and a shell designed for the water pressure from outside when the pool is empty, for example when it is drained for repair later.

These factors are not always visible at the start. That is why a site visit, and an engineer's investigation where needed, comes before a firm quotation. Even then, the ground can hold surprises once excavation starts, so any change of scope is shown to you and agreed before it goes ahead.

Size, depth zones and the edge

Volume matters, but layout matters just as much. Shallow beach entries, Baja shelves (standing or tanning ledges), steps, sunken seating and a deeper swimming zone each add formwork, detailing and finish area. People stand and walk on these shallow zones, and a textured exposed-aggregate finish feels different underfoot from smooth glazed tile, so the surface for them is worth choosing with this in mind.

The edge is one of the biggest decisions. A skimmer pool is simpler. An overflow edge gives a brimming water look, and for a lagoon pool an overflow looks most natural and hides the waterline, whereas a skimmer pool shows a waterline band on the wall and does not give the full lagoon effect. An overflow needs a precisely levelled weir, a collection channel, and a balance tank with its own pipework, waterproofing and controls. An overflow set too high can push water into the joint under the terrace and cause leaks.

Structure, engineering and waterproofing

The shell holds back water and soil, and in some cases carries the weight of a terrace or building. Structural design of the shell, including reinforcement and calculations, and drawings for permits are prepared and signed by a licensed engineer who is our partner. Engineering decisions are taken with you and your engineer — or, if you don't have one, with our partner engineer.

Waterproofing is a separate item from the finish. The shell, the balance tank and any underground pump room each need waterproofing of their own; in the pool it sits beneath the render and finish, not in the finish itself. A quotation that does not say what is waterproofed is hard to compare with others.

Much of the pipework ends up cast into concrete, where it is hard to reach later. Ask how the pipes are tested during construction — normally under pressure before they are cast in — so that damage is caught while it can still be repaired.

Equipment, finish and water features

Features are often where the scope grows quietly. It is worth deciding early which ones matter to you, so they are designed in rather than added later.

• Equipment: pumps, filtration, water treatment, app-controlled lighting and controls, and how simple they are for your staff or manager to run
• The pump room: its position above or below ground, ventilation, water removal, noise near bedrooms and protection against flooding
• Incoming water: whether the pool will be filled from a borehole or another raw source and needs filtration
• The finish: we build pools ourselves with any finish — tile, mosaic, stone or a continuous PebbleCrete finish — along with the coping and steps that go with it
• Features: jacuzzis, air massage across a shallow ledge, waterfalls of any kind (natural stone, lit waterfalls, water curtains or cascades), fibre-optic lighting and projection onto the water, each with its own pipework and equipment

Timing around the season and the monsoon

For rental villas and hotels, the shutdown window matters as much as the work itself. If you plan the shutdown for the low season, bear in mind that in Phuket it overlaps with the monsoon.

Rain affects excavation, concrete work and finishing, so the programme needs room for the weather. A new cement-based finish is filled straight after its final wash. The pool, the plant and the water supply therefore need to be ready for filling before that stage begins. Planning these dependencies early helps avoid delays and rework. The programme is agreed for each project. For an existing pool, the monsoon also matters for draining: an empty shell in waterlogged ground is under pressure from outside, and render and repairs dry slowly in wet weather, so the drained period is kept as short as the work allows.

Renovate or rebuild

An older pool in Phuket does not always need demolishing. If the concrete shell is sound, it can often be remodelled. A shallow beach entry, a Baja shelf (tanning ledge) or new steps can be added where the shell, levels and circulation allow, which is assessed at inspection. Extending a pool and joining old and new concrete is technically demanding and has limitations, so what is possible is assessed per project without blanket promises.

Rebuilding makes more sense where the shell is badly cracked or poorly built, or where the layout cannot be adapted. Repeated leaks that point to deeper structural problems are another reason. An inspection, with a written report and photos, gives you the facts you need to decide. It cannot find every hidden problem at once: once the pool is drained and opened up, other defects can appear, especially when its history is unknown, so a remodel budget needs room for that, and any change of scope is shown to you and agreed before it goes ahead.

How to get comparable quotations

Quotations are easier to compare when they describe the same pool. Ask each contractor to list the following.

If a quotation is vague on any of these points, ask about it. When prices differ, check first whether the scope differs.

• Dimensions, depth zones, steps, Baja shelves or ledges and the edge type, with drawings or sketches
• Who prepares the structural design, and what the shell construction includes
• Which parts are waterproofed: the shell, the balance tank, the pump room
• Pipework, inlets, drains and how the pipes are pressure-tested before they are cast in
• The equipment list, with sizes, and where the pump room goes
• The finish type and colour, the coping, the steps and any features
• Draining, cleaning, filling, start-up, and care instructions at handover
• The fill water source and any incoming filtration
• What is excluded, such as electrical work agreed with your electrician or engineer, landscaping or terrace work

What to send us for a first discussion

Send us what you have, even at an early stage.

• A site plan, drawings, or photos of the site or the existing pool
• The location, and the approximate size and use of the pool
• Whether you want a new pool, a remodel, a design review or an inspection
• For an existing pool, what you see now: leaks, loose tiles, flooding or equipment problems
• Any references for the shape, edge and colour you have in mind

Further reading

• Planning the whole-life cost of a pool finish
• Pool interior finishes compared