Every number below comes from a named source listed at the bottom of this page. National figures are labeled as national; they are not Phoenix quotes. Checked October 23, 2026.
Angi says an average-sized in-ground pool takes about 12 weeks, the quickest builds roughly 8 weeks including permits and excavation, and complex custom designs 6 months or longer[8].
The stages (Angi, national)
| Stage | Typical time[8] |
|---|---|
| Design and hiring a contractor | 1–8 weeks (design about 3 weeks) |
| Permits | 2–6 weeks; varies by city |
| Land preparation and excavation | About 1 week |
| Steel, plumbing and electrical | 1–2 weeks |
| Decorative elements and finishes | 1–4 weeks |
| Filling the pool | 2–3 days |
By pool type
- Fiberglass: installed in 1–2 days once permits and excavation are done[8].
- Vinyl liner: about 2 weeks after excavation, longer for complex designs[8].
- Concrete / gunite: the longest; the concrete needs about 30 days or more to cure, and 3–6 months in total with finishes[8].
What stretches the timeline
- Angi lists weather, site access and depth, financing, inspections and extra features[8].
- Season: Angi says many contractors are booked solid in spring and summer, and many offer deals in late fall and winter[8].
In Phoenix
The City of Phoenix says it conducts two inspections, pre-gunite and pre-plaster, to check pools against its barrier rules[9].
Local permit steps: Arizona pool permits and HOA approval.
Frequently asked questions
How long does it take to build an in-ground pool?
Angi says about 12 weeks on average, roughly 8 weeks at the quickest, and 6 months or more for complex custom designs[8].
How long do pool permits take?
Angi puts permits at 2–6 weeks and says every municipality is different[8].
When is the best time to book a pool builder?
Angi says many contractors are booked solid in spring and summer and many offer deals in late fall and winter[8].
Resurfacing or replastering an existing pool instead of building one? See our sister site, Phoenix Pool Resurfacing Guide (same operator, same scoring rules).
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More guides
- In-ground pool cost in Phoenix (2026)
- Fiberglass vs gunite vs vinyl
- How long it takes to build a pool
- Arizona pool permits and HOA approval
- Phoenix pool building cost and licensing guide (2026)
- Best pool builders in Phoenix