Fiberglass Pool Cost: $25,000–$150,000 in 2026 (Average $65,000)
Author: CostGuideHQ Editorial·✓ Fact-checked·Updated July 2026·5 min read·7 sources Quick answerQuick answer: A fully installed fiberglass pool typically costs $25,000 to $150,000, averaging around $65,000. Small pools under 26 feet start near $45,000; large pools over 35 feet with premium decking can top $150,000. Per-square-foot rates run roughly $100 to $330.
- ✓A fully installed fiberglass pool typically costs $25,000 to $150,000, averaging about $65,000 (PoolResearch, Design Transition Studio, Thursday Pools, Fixr).
- ✓Small pools under 26 feet run $45,000-$75,000; large pools 35 feet or more run $110,000-$150,000+ (Thursday Pools).
- ✓Per-square-foot pricing ranges from roughly $100 to $330 depending on size, finish, and site work (Fixr, This Old House).
- ✓The fiberglass shell alone typically costs $8,000 to $40,000 before decking, equipment, and labor (PoolResearch, Design Transition Studio).
How much does fiberglass pool cost?
National average
$65,000
total project
Typical range
$25,000–$150,000
Most projects
Whole project
$25,000–$150,000
$15,000avg $65,000$210,000+
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Cost by material / type
| Type | Low | High |
|---|
| small pool, under 26 ft | $45,000 | $75,000 |
| medium pool, 27-34 ft | $75,000 | $110,000 |
| large pool, 35+ ft | $110,000 | $150,000 |
What affects the cost?
- Pool size and length — bigger shells cost significantly more, roughly doubling to tripling from a small pool to a large one (Thursday Pools, This Old House)
- Site conditions, including soil type, yard slope, water table, and truck access needed to deliver and set the one-piece prefab shell (Thursday Pools)
- Decking and patio material — concrete, pavers, or stamped concrete change the total meaningfully (PoolResearch, Fixr)
- Added equipment such as a heater, automatic safety cover, or LED lighting, which are typically priced on top of the base install (Thursday Pools)
- Excavation and backfill labor to prepare the hole and set the shell (Fixr, oneanddoneprep)
- Geographic location and local labor/permit rates (PoolResearch)
- Shell shape and size limits — fiberglass ships as one prefabricated piece, so shape options are more restricted than poured concrete (Bob Vila, This Old House)
Why does a fiberglass pool cost so much?
A fiberglass pool installed nationwide typically runs $25,000 to $150,000, with recent 2026 pricing from Fixr and manufacturer Thursday Pools centering the average around $65,000 – most homeowners with a mid-size pool spend $65,000 to $90,000 (Thursday Pools). Per square foot, installed pricing runs roughly $100 to $330 depending on the source and finish level (Fixr, This Old House). Most of that cost isn’t the shell itself: the prefabricated fiberglass shell alone typically runs $8,000 to $40,000, with the rest going toward excavation, decking, plumbing, and standard equipment like a filter and pump (PoolResearch, Design Transition Studio). Older, broader cost guides put full projects closer to $20,000-$70,000, averaging near $40,000 (Bob Vila, PoolResearch) – the spread reflects rising material, freight, and labor costs pushing more recent estimates higher. Fiberglass costs less to maintain long-term than concrete since the smooth gel-coat surface resists algae and needs fewer chemicals (Bob Vila).
What affects the cost?
A handful of factors explain the gap between a $45,000 pool and a $150,000-plus one:
- Pool size. This is the single biggest driver. Small pools under 26 feet run $45,000-$75,000, medium pools (27-34 ft) run $75,000-$110,000, and large pools 35 feet or longer run $110,000-$150,000+ (Thursday Pools).
- Site conditions. Soil type, yard slope, water table, and how easily a crane or truck can reach the yard to set the one-piece prefab shell all affect labor cost (Thursday Pools).
- Decking and patio material. Basic concrete decking costs less than pavers or stamped concrete, and decking alone can add several thousand dollars to tens of thousands (PoolResearch, Fixr).
- Equipment add-ons. A heater ($3,000-$5,000+), an automatic safety cover ($10,000-$20,000+), and LED lighting ($1,000-$5,000+) are commonly priced on top of the base install (Thursday Pools).
- Excavation and backfill. Preparing the hole and setting the shell is a meaningful line item, especially on sloped or hard-to-access lots (Fixr, oneanddoneprep).
- Location. Local labor rates and permitting requirements shift the total by region (PoolResearch).
- Shell shape. Because fiberglass ships as a single molded piece, shape and size options are more limited than poured concrete, which can rule out fully custom layouts (Bob Vila, This Old House).
How to lower your fiberglass pool cost
- Right-size the pool. Moving from a large (35+ ft) to a medium (27-34 ft) shell can save tens of thousands of dollars based on Thursday Pools’ size tiers – decide how much pool the household actually needs before shopping shapes.
- Keep decking simple at first. Basic concrete decking costs meaningfully less than stamped concrete or pavers; decking can always be upgraded later without touching the pool shell (PoolResearch, Fixr).
- Treat equipment add-ons as optional line items. A heater, automatic cover, and accent lighting are commonly quoted separately and can be added in a later phase instead of the initial build (Thursday Pools).
- Get the site evaluated early. Because soil, slope, and access affect excavation cost directly, an early site assessment avoids surprise change orders once digging starts (Thursday Pools).
- Compare shell-only and turn-key quotes. Some installers separate shell delivery from full turn-key installation; understanding what’s bundled into a quote (excavation, decking, equipment) makes it easier to compare bids apples-to-apples (PoolResearch).
Prices vary widely by region, pool size, and how a given contractor packages the shell, decking, and equipment into one quote. Get several local bids, and confirm what’s included – shell, excavation, basic decking, and standard equipment – before comparing numbers.
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Frequently asked questions
How much does a fiberglass pool cost on average?+
Nationally, a fully installed fiberglass pool averages around $65,000, with most projects falling between $25,000 and $150,000 depending on size and finish (PoolResearch, Design Transition Studio, Thursday Pools, Fixr).
What is the cost per square foot for a fiberglass pool?+
Fiberglass pools run roughly $100 to $330 per square foot installed, with Fixr citing $100-$200/sq ft and This Old House citing $175-$330/sq ft depending on size and finish quality.
How much does just the fiberglass pool shell cost?+
The shell alone, before decking, equipment, and labor, typically runs $8,000 to $40,000, according to PoolResearch and Design Transition Studio.
Is a fiberglass pool cheaper than a concrete pool?+
Fiberglass pools generally cost less to maintain over time than concrete because the prefab shell needs less upkeep -- Bob Vila notes fiberglass costs the least in the long run among inground pool materials.
How much more does a large fiberglass pool cost than a small one?+
Thursday Pools data shows small pools (under 26 feet) running $45,000-$75,000, while large pools (35 feet or more) run $110,000-$150,000 or more -- roughly double to triple the cost.
What drives the price up beyond the base pool cost?+
Decking material, a heater, an automatic safety cover, LED lighting, site conditions like soil and slope, and shell size all add to the base shell and installation price (Thursday Pools, PoolResearch).
Sources
Figures synthesized and cross-checked across these sources (retrieved 2026-07-24):
- Thursday Pools (manufacturer) — "A fully installed fiberglass pool costs between $45,000 and $100,000 or more"; most homeowners spend "$65,000 to $90,000 for a mid-size pool with standard decking." By project tier: entry-level $45,000-$65,000; mid-range $65,000-$90,000; high-end $90,000-$150,000+. By size: small (under 26 ft) $45,000-$75,000; medium (27-34 ft) $75,000-$110,000; large (35+ ft) $110,000-$150,000+. Add-ons: heater $3,000-$5,000+, automatic safety cover $10,000-$20,000+ (avg $17,580), LED lighting $1,000-$5,000+.
- Fixr — Overall range "$50,000 - $95,000"; average "$70,000" for a 15'x30' pool with concrete deck, filter, heater, and pump. Low-end "$15,000" for a small spool; high-end "$200,000" for a 20'x40' pool with stamped concrete deck and enclosure. Cost per sq ft "$100 to $200". By size installed: 10'x20' $20,000-$40,000; 12'x24' $28,800-$57,600; 15'x30' $45,000-$90,000; 20'x40' $80,000-$160,000. Shell alone $10,000-$30,000.
- This Old House — Fiberglass installation cost per sq ft "$175-$330" (installation only, no extras). By size: 10'x20' $35,000-$66,000; 12'x20' $42,000-$79,000; 12'x24' $50,000-$95,000; 10'x30' $53,000-$99,000; 12'x30' $63,000-$119,000; 14'x28' $69,000-$129,000; 15'x30' $79,000-$149,000; 16'x32' $90,000-$169,000. 10-year maintenance $5,000-$15,000.
- PoolResearch — "On average, a fiberglass pool (including installation) costs about $40,000", with labor "about $15,000" and pool/materials "roughly $30,000". Shell only "$8,000 and $27,000". Standard installation "$25,000 to $70,000"; turn-key "$40,000 to $85,000". By size (median): 8'x15' $22,000; 10'x20' $28,000; 10'x30' $40,000; 12'x20' $35,000; 15'x20' $45,000; 16'x32' $52,000; 20'x40' $67,000. Monthly maintenance $40-$200.
- Bob Vila — "An inground fiberglass pool costs $20,000 to $60,000." Inground pools generally cost "$50 to $125 per square foot to build." Fiberglass "is low maintenance and costs the least in the long run" among inground pool materials and "can last 25 to 30 years."
- oneanddoneprep.com — National average total installed: "$28,000" low, "$40,000" average, "$60,000" high. Per sq ft: "$60" low, "$75" average, "$110" high. By size: 12x24 ft $28,000-$52,000; 14x28 ft $32,000-$60,000; 16x36 ft $40,000-$75,000; 16x40 ft $44,000-$85,000. Materials $15,000-$40,000; labor $8,000-$18,000; decking $3,000-$12,000.
- Design Transition Studio — "A typical fiberglass pool installation in the United States ranges from roughly $25,000 to $60,000"; low tier $25,000-$35,000, average tier $35,000-$50,000, high tier $50,000-$70,000+. Shell comprises 60-70% of total cost; shell alone $20,000-$40,000. Real-world examples: basic 12x24 ft $60,200 total; mid-range 14x28 ft $80,500 total; premium 16x32 ft $120,500 total.
Published figures vary a lot by source and by how recently each was updated. Broader, somewhat older cost guides (Bob Vila, PoolResearch, oneanddoneprep) put a full installed project between about $20,000 and $70,000, averaging near $40,000. More recent 2026 data from Fixr, This Old House, and pool manufacturer Thursday Pools runs higher -- $45,000 to $150,000+, with most mid-size pools landing between $65,000 and $90,000 -- reflecting higher material, freight, and labor costs. This guide's headline high end and average lean on the more recent, manufacturer- and 2026-dated figures. The $25,000 headline low end is a synthesized figure reflecting PoolResearch's standard-installation range ($25,000-$70,000) and Design Transition Studio's low-tier estimate ($25,000-$35,000), rather than the still-lower ~$20,000 floor some older guides cite. Similarly, the shell-alone range of $8,000-$40,000 blends PoolResearch's shell-only low ($8,000) with Design Transition Studio's shell-alone high ($40,000). Quoted totals typically include the shell, excavation, basic decking, and standard equipment; a heater, automatic cover, custom decking, or an enclosure cost extra and can push a project well past $150,000. Small spools or plunge pools can start under $20,000 and are not the focus of this guide.