California · Inground Pool Builders & Contractors · Updated 2026
Compare 127 inground pool builders in the Ontario area for new inground pool construction. Ratings, review counts, contact details and 2026 planning prices by pool type are below. 58 are listed as specialists for this work; the rest are pool builders that routinely handle it. This page shows the top 20.
Ordered by customer rating and review count across the Ontario area. Listings include the available rating, contact details and location; confirm current credentials and scope directly.
Installed prices in Ontario run from $58,500–$91,000 for a mid-size vinyl liner pool to $97,500–$156,000 for a comparable gunite pool, with fiberglass in between at $75,500–$110,500. Decking, fencing and permits stack on top:
| Job | Typical Ontario price |
|---|---|
| Vinyl liner pool, installed (about 16×32) | $58,500–$91,000 |
| Fiberglass pool, installed (about 14×30) | $75,500–$110,500 |
| Gunite / concrete pool, installed (about 16×32) | $97,500–$156,000 |
| Attached spa or spillover | $15,500–$45,500 |
| Decking and coping around the pool | $8,000–$26,000 |
| Safety fence and gates | $2,600–$7,800 |
| Permits, engineering, utility locates | $700–$4,600 |
| Typical all-in project with deck and fence | $91,000–$195,000+ |
| Ongoing upkeep (chemicals, power, service) | $1,400–$3,400 / year |
California pricing is above the national baseline used for these estimates, mainly on labor and permitting. Soil, access for excavation equipment, slope, utility relocation and the finish and feature package move a quote more than the pool's footprint does — compare itemized bids for the same size and type.
Fiberglass, gunite and vinyl bids are not comparable to each other — settle the type (or ask each builder to bid two), then compare like for like.
Ontario market
4.7 average customer rating · 2196 reviews · 127 companies · 58 specialists
See All on the Map →127 inground pool builders in the Ontario area. 58 are listed as specialists for this work; the rest are pool builders that routinely handle it. The ranked companies average 4.7 stars across 2,196 customer reviews. PoolPad orders the list with a weighted score that combines customer rating and review count, so a long track record counts for more than a handful of scores.
Terrain drives engineering: hillside lots need soils reports, caissons, or retaining structures, and every shell is built to seismic-conscious standards. Expansive soils show up across the state, so structural engineering isn't the place to save money. Title 24 energy rules mean variable-speed pumps are the standard spec, not an upgrade. Infinity edges on view lots, pebble interiors, baja shelves, and increasingly small, deliberate pools — plunge pools, cocktail pools, and spools that fit tight lots and tighter water budgets. Automation and solar heating adoption lead the nation.
For statewide rankings, city counts and California prices, see the California inground pool builders directory, or check the nearby cities below.
Get at least three itemized bids for the same type and size, visit finished pools that are a few years old, and read the warranty for the shell, the finish and the equipment separately. Ask how the company handles rock, groundwater and access problems once digging starts. Pool builders need a CSLB C-53 swimming pool contractor license — verify it (and the bond) on the state's site in about a minute. California also requires new and remodeled pools to include two of seven approved drowning-prevention safety features, and many water districts add rules on filling and draining during drought years.
Installed in Ontario, CA, a mid-size vinyl liner pool typically runs $58,500–$91,000, a fiberglass pool $75,500–$110,500 and a gunite pool $97,500–$156,000. With decking, a fence and permits most complete projects land at $91,000–$195,000+. California pricing is above the national baseline used for these estimates, mainly on labor and permitting; the size, finish, features and site conditions move the number most.
There is no single best type. Fiberglass installs fastest and is the easiest to maintain but comes in fixed shapes; gunite can be any shape with any feature but costs more to build and to resurface later; vinyl liner has the lowest upfront price but needs a new liner every eight to twelve years. Match the type to your budget, your yard, how long you plan to stay and how much maintenance you want.
A fiberglass pool is often swimmable two to six weeks after excavation; a vinyl liner pool four to eight weeks; a gunite pool eight to sixteen weeks because the shell has to cure before tile, coping and the finish go on. Permitting adds two to eight weeks up front, and decking and landscaping follow the pool. Builders here work year-round; the spring rush books first.
Most residential pools are 3 to 6 feet with a deep end of 6 to 8 feet; diving depths of 8 feet or more need a longer pool and a larger excavation. Fiberglass shells are limited to the manufacturer's molds (commonly 6 to 8 feet), while gunite and vinyl liner pools can be built to almost any profile, including sport pools that are shallow at both ends.
The prime outdoor season in Ontario runs May through October along the coast, longer inland — roughly 6 months of comfortable unheated swimming — and pools stay open and running year-round rather than being winterized. The coast swims May through October (heaters stretch it), while the Central Valley and desert run hot enough for six-plus unassisted months. Pools stay open all year, winter is mild, and evaporation — not freeze — is the seasonal enemy, especially inland.
Pool Icons has the highest customer rating on this Ontario list at 5 stars across 57 reviews. Above & Beyond Pool Remodeling has the largest review count (384 reviews at 4.9 stars). PoolPad orders the list with a weighted score that combines customer rating and review count, so a long track record counts for more than a handful of scores.
Pool builders need a CSLB C-53 swimming pool contractor license — verify it (and the bond) on the state's site in about a minute. California also requires new and remodeled pools to include two of seven approved drowning-prevention safety features, and many water districts add rules on filling and draining during drought years.
Budget $1,400–$3,400 / year for chemicals, electricity and routine service, more for a heated pool or a weekly cleaning route. Fiberglass and vinyl surfaces use fewer chemicals than plaster; a variable-speed pump and an automatic cover cut running costs the most.
Check inground pool builders in cities near Ontario, or open the California directory for every listed market in the state.
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