Underground Pool Cost Guide 2026
Underground pool installations typically cost a wide range depending on size, soil conditions, materials, and site prep. The main cost drivers are excavation, permits, pool shell material, finishes, and installation labor. This article provides practical price ranges in USD to help budget planning.
Assumptions: region, pool size, soil conditions, material choice, and labor hours.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Pool Build | $40,000 | $70,000 | $140,000 | Includes shell, plaster/finish, basic features |
| Excavation & Site Prep | $8,000 | $20,000 | $60,000 | Soil conditions and site access drive variance |
| Materials (Shell & Finish) | $20,000 | $40,000 | $90,000 | Concrete/gunite or vinyl/plastic options |
| Labor | $15,000 | $30,000 | $70,000 | Includes crew, crane, and safety measures |
| Permits & Fees | $1,000 | $6,000 | $15,000 | Local permit and inspection costs |
| Delivery/Disposal | $2,000 | $6,000 | $12,000 | Soil disposal and material transport |
Overview Of Costs
Estimated total project ranges span from about $70,000 to well over $150,000, with typical installations landing near $90,000–$120,000 for mid-size projects in common markets. Per-unit pricing can be expressed as roughly $50–$150 per square foot of pool surface, depending on shell material and finish. Regional factors and site complexity can shift totals by ±20–40%.
Cost Breakdown
In this section, a typical breakdown is shown in a table.
| Materials | Labor | Equipment | Permits | Delivery/Disposal | Warranty | Contingency | Taxes |
|---|---|---|---|---|---|---|---|
| $20,000–$90,000 | $15,000–$70,000 | $3,000–$15,000 | $1,000–$15,000 | $2,000–$12,000 | $0–$8,000 | $5,000–$20,000 | Varies by state |
Pricing Variables
Site and design factors strongly influence price. For underground pools, two niche drivers are essential: shell material and finish. First, a concrete or gunite shell with plaster or tile finishes increases cost compared with vinyl liners. Second, pool size and depth impact excavation complexity and material needs. A small rectangular pool may cost far less than a large freeform design with multiple tanning ledges or waterfalls.
Regional Price Differences
Prices vary by region due to labor markets, permitting intensity, and material availability. In the chart below, three regions are compared with approximate delta ranges.
- Coast/Metro: +5% to +15% vs national average
- Midwest/Suburban: baseline to +5%
- South/Rural: -5% to +10% relative to national average
Labor & Installation Time
Labor hours and crew costs depend on soil conditions and pool complexity. Typical crews range from 1–3 weeks for mid-size projects, with labor rates commonly $60–$110 per hour in many markets. A heavy excavation or complex rock removal can add 10–30% to labor time and cost.
Extras & Add-Ons
Common add-ons can raise the project total. Isolated examples include a heating system, automated cover, high-end finishes, or in-pool lighting. These can push costs by several thousand dollars apiece and may affect ongoing maintenance budgets.
Real-World Pricing Examples
Three scenario cards illustrate typical outcomes with differing scopes.
Basic
Spec: small rectangular shell, standard plaster finish, simple pump system. Labor: 2 weeks. Total: $70,000–$90,000. Per-unit: $60–$100 per square foot. Assumptions: suburban site, standard access, no major rock.
Mid-Range
Spec: mid-size freeform with tile finish, basic automation, crew crane. Labor: 3 weeks. Total: $95,000–$135,000. Per-unit: $75–$120 per square foot. Assumptions: mixed soil, average access, modest landscape work.
Premium
Spec: large pool with advanced finishes, resort-style features (jets, led lighting, spa integration). Labor: 4–5 weeks. Total: $150,000–$230,000+. Per-unit: $120–$200+ per square foot. Assumptions: complex site, premium materials, extensive site prep.
What Drives Price
Major price drivers include shell material choice (concrete/gunite versus vinyl), pool size and depth, finish quality, and site accessibility. These factors interact with local code requirements and permitting timelines, which can influence total project duration and costs.
Ways To Save
Cost-conscious strategies include selecting standard finishes, sizing the pool to fit typical site constraints, and coordinating with a single contractor to reduce mobilization. Early planning and clear specifications help prevent change orders and keep the project on budget.