Fiberglass vs. Concrete Pools in Gilbert

Most new in-ground pools in Gilbert are either concrete, built from gunite or shotcrete with a plaster or pebble finish, or a one-piece fiberglass shell. Both can work well in the East Valley, but they differ in price, install time, design flexibility and long-term upkeep in desert sun and hard water.

This guide compares the two for Gilbert homeowners.

Published cost comparison

Published 2026 national estimates put fiberglass in-ground pools at $55,000–$100,000 installed and concrete pools at $65,000–$120,000. The overall typical installation range is about $44,499–$87,349. Decking, barriers, landscaping and equipment upgrades can add substantially to either.

Design flexibility

Concrete can be formed to almost any shape, depth or feature, including beach entries, tanning ledges and custom spas. Fiberglass shells come in set shapes and sizes limited by what can be trucked and craned into the yard, so tight Gilbert side yards and overhead lines can limit choices.

Install time and access

A fiberglass pool can often be set and filled in far less time than a concrete pool once the hole is dug, because the shell is factory-made. Concrete pools require steel, shotcrete, curing and finishing. Fiberglass usually requires a crane to lift the shell over the house or wall, which adds cost and depends on access.

Heat, sun and hard water

Gilbert's hard water and strong sun affect finishes. Plaster and pebble finishes on concrete pools need periodic resurfacing; published resurfacing estimates run $6,000–$15,000. Fiberglass gelcoat resists algae and needs less acid washing but can fade or blister if water chemistry is poorly managed. Either way, good chemistry and a cover reduce maintenance.

Permits and barriers

Both types need Town of Gilbert pool permits and a barrier meeting Land Development Code §4.107 B and ARS §36-1681 before the pool holds water. Pool location rules apply to both.

Which is right for you

Choose concrete for custom shapes or features, and fiberglass for speed and lower surface upkeep where access allows. Get bids for both on the same yard.

Long-term ownership costs

Purchase price is only part of the comparison. Concrete pools need resurfacing at intervals, more brushing and often more acid and chemical use because plaster is porous. Fiberglass surfaces are smoother and less porous, which can reduce chemical use and algae, but shells can be harder to repair if damaged and colors can fade under strong UV. Both need pumps, filters and possibly heaters or salt cells that wear out over time. Ask each builder for expected maintenance tasks and costs over ten years, and read warranty terms on the structure and the surface separately.

Budgeting and timing

Use the published ranges below as a starting point, not a quote. Add a contingency of roughly ten to fifteen percent for surprises such as hard digging, wall repairs or equipment upgrades found once work begins. Ask each contractor to break out permits, barriers, decking, electrical and landscaping so you can compare like for like. In Gilbert, the cooler months from fall through spring are popular for construction and renovation, so schedules fill early; booking ahead can help, while summer work may need early-morning crews and careful curing. Check whether your HOA's review calendar adds weeks to the timeline, and plan any draining around the Town's published options so the job is not delayed while water is waiting to go somewhere.

Resale and how buyers see each type

In the East Valley resale market, buyers tend to judge a pool by condition more than by construction type. A stained, rough plaster pool can read as a repair bill, while a faded fiberglass shell can raise questions about the gelcoat. Keep service records, resurfacing invoices and warranty paperwork for either type; documentation helps a buyer's inspector separate cosmetic wear from structural concerns.

Shade, heat and water temperature

Gilbert pools often run above 90°F in late summer. Darker interior finishes and shallow sun shelves warm fastest. Concrete pools can incorporate shade structures, deeper zones or water features designed in from the start, while fiberglass shells limit how much the shape can change. If you plan to swim through July and August, discuss shade and depth as part of the type decision, not as an afterthought.

Repairs over the life of the pool

Concrete pools can be patched, replastered or reshaped during a remodel. Fiberglass repairs are typically limited to gelcoat touch-ups and specialist structural repairs. Ask each builder how they handle cracks or blisters under warranty and after.

Equipment matters for both

Whichever type you choose, pumps, filters, heaters and automation drive operating cost. A variable-speed pump and properly sized filter suit either, and a cover reduces evaporation in Gilbert's summer for both. Visiting a finished pool of each type, ideally one that has been through a few summers, gives a better feel for surface texture, color and upkeep than photos.

Ask each builder how their shell handles Gilbert's summer heat and intense sun over time, including fading of colored finishes and surface roughness on plaster.

Published pool cost estimates

Sources: Angi: In-ground pool cost (2026); Angi: Pool fence cost (2026). Figures are published national or regional estimates compiled by those sites, labeled as estimates; they are not quotes and not prices from any provider on this site. East Valley sites with caliche, tight side-yard access or HOA design requirements tend to price toward the upper end.

Local rules and code references

• Town of Gilbert Land Development Code §4.107 B (pool enclosures and gates): enclosure of walls, solid wall, chain link or wrought iron not less than 5 feet nor more than 6 feet high; openings must stop a 4-inch sphere; gates self-closing and self-latching; padlocked double-width (RV) gate exception.
• Arizona Revised Statutes §36-1681 (pool enclosures): state minimum: at least a 5-foot barrier measured on the outside, no 4-inch openings, latch at least 54 inches high or on the pool side, gates open outward, barrier at least 20 inches from the water, and alternatives where the house forms part of the enclosure.
• Town of Gilbert Permits, Applications & Checklists: where the Town posts current residential pool and spa application checklists and submittal requirements.
• Arizona Department of Health Services, Residential Pool Safety Guidelines (GD-108-PHS-EDC): state summary of the §36-1681 requirements and the pool-safety notice a pool builder must give the buyer.

Code text and department procedures change; confirm current requirements with the jurisdiction before work starts.