The disadvantages of container pools come down to flexibility and customization. Shipping containers come in standard sizes, so the sizes and shapes are limited. They also have a very distinctive look, which may not suit the aesthetic of your backyard. 

Beyond that, while container pools are more affordable than in-ground pools, certain models can be more expensive. This includes the cost to heat your pool, since the metal walls have more heat transfer than other types of pools (which some brands circumvent with insulation).

The total time to install an inground pool typically ranges from 8 weeks to 4 months. This timeline can be influenced by several factors, including permitting, site preparation, and the construction process itself.

Key phases and their typical durations include:

• Permits: Obtaining necessary permits can take anywhere from two to six weeks.

• Excavation and Site Preparation: This phase takes about a week but can be extended by problematic soil, unexpected ground conditions, or the need to move underground utility lines.

• Construction: The actual build, including plumbing and electrical work, often takes one to two months. The pool material is a major factor here; a concrete pool needs about 30 days to cure, while installing a fiberglass or vinyl liner is much faster.

External factors can also cause significant delays:

• Contractor Availability: Spring and summer are busy seasons, and high demand can lead to long waitlists, potentially adding months to your start date. It is often recommended to start planning and getting estimates up to a year in advance.

• Other Delays: Weather, material shortages, complex designs, and other unforeseen challenges can extend the project timeline.

Generally speaking, most municipalities require you to get a permit when you build a pool. Whether or not you need a permit to install a plunge pool will depend on your local laws. It’s always better to check with your HOA and town clerk before digging for a new pool. Otherwise, violations could result in hefty fines. 

DIY is possible for minor repairs like patching liners. Professional services handle structural and mechanical issues.