Delaware · Inground Pool Builders & Contractors · Updated 2026
25 inground pool builders across Delaware — fiberglass, gunite and vinyl liner — ordered by customer rating and review count, with 2026 installed prices for each type so you can compare before the first site visit. 10 are listed as specialists for this work; the rest are pool builders that routinely handle it. City lists cover 2 Delaware markets.
The order uses a weighted mix of customer rating and review count; open a city below for the full local list. Confirm current credentials, availability and scope directly.
Choose a local list for customer ratings, review counts, 2026 prices and the questions to ask. Cities are sorted by listed company count.
Installed prices in Delaware run from $47,500–$73,500 for a mid-size vinyl liner pool to $79,000–$126,000 for a comparable gunite pool, with fiberglass in between at $61,000–$89,500. Decking, fencing and permits stack on top:
| Job | Typical Delaware price |
|---|---|
| Vinyl liner pool, installed (about 16×32) | $47,500–$73,500 |
| Fiberglass pool, installed (about 14×30) | $61,000–$89,500 |
| Gunite / concrete pool, installed (about 16×32) | $79,000–$126,000 |
| Attached spa or spillover | $12,500–$37,000 |
| Decking and coping around the pool | $6,500–$21,000 |
| Safety fence and gates | $2,100–$6,300 |
| Permits, engineering, utility locates | $500–$3,700 |
| Typical all-in project with deck and fence | $73,500–$157,500+ |
| Ongoing upkeep (chemicals, power, service) | $1,200–$3,100 / year |
Delaware pricing is close to the national baseline used for these estimates. 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.
PoolPad tracks 25 inground pool builders across Delaware, with city lists for 2 markets. 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.
Southern Delaware digs sand with high water tables — dewatering and hydrostatic relief are routine — while New Castle County works clay-loam Piedmont edges. Flat lots keep site work simple by regional standards, and coastal builds spec corrosion-resistant equipment. Vinyl liner and fiberglass carry the volume, gunite leads the high end near the beaches, and salt systems are close to default. Pool-plus-screened-porch combos fit the coastal lifestyle build.
The largest listed markets are Wilmington (19 companies), Dover (11 companies).
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. Delaware licenses contractors at the state level and counties run the permitting — Sussex, Kent, and New Castle each with their own rhythm — covering pool, electrical, and residential-code barriers. Beach-community HOAs add architectural review on many lots; sequence it early.
Installed in Delaware, DE, a mid-size vinyl liner pool typically runs $47,500–$73,500, a fiberglass pool $61,000–$89,500 and a gunite pool $79,000–$126,000. With decking, a fence and permits most complete projects land at $73,500–$157,500+. Delaware pricing is close to the national baseline used for these estimates; 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. Most crews dig in the off-season so the pool is ready when the season opens.
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 outdoor season in Delaware runs mid-May through September — about 4 months unheated. A full professional winterization each fall protects plumbing and equipment through the freeze, and spring openings cluster into the same few weeks. Mid-May through September, with coastal moderation stretching shoulders near the beaches. Winters still freeze — full winterization remains standard statewide.
Clark's Pools has the highest customer rating on this Delaware list at 4.8 stars across 93 reviews. Clark's Swimming Pools has the largest review count (125 reviews at 4.5 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.
Delaware licenses contractors at the state level and counties run the permitting — Sussex, Kent, and New Castle each with their own rhythm — covering pool, electrical, and residential-code barriers. Beach-community HOAs add architectural review on many lots; sequence it early.
Budget $1,200–$3,100 / 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.
If your property is near a state line, check the neighboring directories too.
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