The Short Answer
From the day you sign a contract to the day you swim, expect 4–8 months total for a gunite pool and 2–4 months for fiberglass. Construction itself is faster than most homeowners expect — it's the permitting, scheduling, and finishing work that takes time.
Timeline Summary by Pool Type
The Full Gunite Pool Timeline
Gunite pools are built from scratch on your property, which is why they take longer. Here's what the process actually looks like:
Design & Contracting
2–4 weeksFinal design approval, contract signing, material selections. Your builder will conduct a site visit and finalize the plans before permit submission.
Permitting
4–8 weeksYour builder submits permit applications to your town's Building Department and any other required agencies (Inland Wetlands, Zoning, Health). Processing times vary significantly by town — Great Neck and Manhasset tend to run longer than other municipalities.
Excavation
2–5 daysOnce permits are approved and the ground has thawed, excavation begins. In rocky areas like Bedford and Redding, this can take longer and cost more than in softer soil towns near the coast.
Steel & Plumbing
1–2 weeksA steel rebar framework is installed in the excavated hole, and all plumbing lines are roughed in. Inspections are typically required at this stage before gunite can be applied.
Gunite Application
1–2 daysConcrete is sprayed onto the steel framework to form the pool shell. This is one of the most dramatic days of the project — the pool's shape becomes visible for the first time.
Curing Period
3–4 weeksThe gunite shell must cure properly before any further work. During this time the pool is wet-cured daily. Rushing this step leads to structural problems down the road.
Tile, Coping & Decking
2–6 weeksWaterline tile is installed, coping stones are set, and the surrounding deck — bluestone, concrete, pavers — is built out. This is often the longest phase because it involves the most tradespeople working in sequence.
Equipment & Electrical
1–2 weeksPool equipment (pump, filter, heater, automation) is installed and electrical connections are made by a licensed electrician. Electrical inspection is required before the pool can be filled.
Interior Finish & Fill
1–2 weeksThe interior plaster, pebble, or tile finish is applied and the pool is filled with water. Chemical balancing takes a few days before swimming is safe.
Final Inspections & Fencing
1–2 weeksFinal inspections are completed and the required perimeter fencing is inspected. Connecticut law requires fence inspection before the pool can legally be used.
What Causes Delays
Even well-planned projects run into delays. The most common in Nassau County:
- Permit processing delays — especially in Great Neck, Larchmont, and during busy spring periods when Building Departments are overwhelmed
- Rocky excavation — hitting ledge rock is common in northern Nassau County and can add days and significant cost
- Rain and weather — concrete and plaster work can't happen in wet conditions
- Subcontractor scheduling — tile setters, electricians, and other tradespeople work on multiple jobs simultaneously
- Change orders — mid-project design changes always add time
- Material lead times — specialty tiles, coping stones, and equipment can have long lead times
A good builder will build reasonable buffer into the schedule and communicate proactively when delays occur. Ask any prospective builder how they handle delays and what their track record looks like — it's a telling question.
The Bottom Line
Plan for longer than you think, start earlier than feels necessary, and choose a builder with a strong local reputation for sticking to schedules. The homeowners who are happiest with their pool projects are the ones who gave the process the time it deserves.