TL;DR
- -Pool proposals aren't standardized — a $28,000 gap between bids often means two different pools, not two prices for the same pool.
- -The equipment package is where bids diverge most: insist on specific brand and model numbers, not vague descriptions like 'energy-efficient pump.'
- -Deck square footage caps and coping pricing are the two most common sources of post-contract change orders — confirm both in writing before signing.
- -Every pool needs a bonding grid and a dedicated electrical run; if a bid doesn't mention them explicitly, ask for it in writing.
- -Pool safety fencing, irrigation repairs, landscaping restoration, and retaining walls are almost never in any contractor's base price — budget for them separately.
- -Build a side-by-side spreadsheet comparing shell specs, equipment models, and stated exclusions before deciding which bid is the better deal.
Why the Cheapest Bid Is Often a Different Pool
Your neighbor got three pool bids. Two came in within ten grand of each other. The third was $28,000 cheaper. They signed the low one. Six months later, a change order arrived for the decking they assumed was included, the equipment upgrade the original scope had quietly omitted, and the electrical run that "wasn't in the base price."
Pool proposals aren't standardized. Every contractor structures their bids differently, and what looks like a direct comparison almost never is. Understanding what a quote actually includes — and what it quietly doesn't — is one of the most valuable things you can do before signing a six-figure contract.
Here's how to read a pool proposal like someone who's reviewed a thousand of them.
Start With the Shell Specifications
The pool itself — the concrete structure, rebar grid, and plumbing rough-in — is where most of the structural cost lives. A solid proposal should specify the exact dimensions and depth, the construction method (gunite or shotcrete), rebar spacing (typically 6" on center for residential pools), the number of return jets and skimmers, and the plumbing material (PVC Schedule 40 is standard; flex pipe is cheaper and degrades faster).
Proposals that leave this section vague — "custom pool, approximately 16x32" — are telling you something. If the scope isn't written down precisely, it can be reinterpreted later at your expense.
The Equipment Package Is Where Bids Diverge Most
An equipment pad proposal should name specific brands and model numbers. Vague language like "energy-efficient pump" or "name-brand filter" is a red flag. You want to see: the pump brand, horsepower, and whether it's variable-speed; the filter type and tank size; the heater BTU rating if one is included; the automation system brand; and the sanitization method (salt cell, UV, ozone, or standard chlorinator).
Equipment quality shapes your operating costs for the next 15 to 20 years. A variable-speed pump from a manufacturer like Pentair or Jandy can reduce your monthly energy bill by $80 to $120 compared to a single-speed unit. If one bid includes a single-speed pump and another doesn't, those quotes aren't truly comparable — and the apparent savings evaporate within three years.
Decking: Square Footage and What's in Scope
Pool deck line items are a frequent source of post-contract surprises. A bid might say "up to 800 square feet of concrete decking." That sounds reasonable — until your design needs 1,100 square feet to properly connect the pool to your home. The overage becomes a change order.
Look for the specific square footage, the exact material (brushed concrete, pavers, travertine, or a cool-deck coating), and whether the scope covers the area between the pool and your home or just the pool perimeter itself. Also confirm whether coping — the stone or concrete cap that borders the pool edge — is priced separately or bundled with the deck. It's often one or the other, and the difference runs $4,000 to $12,000 depending on the material and pool size.
Electrical and Bonding
Every pool requires a bonding grid — a continuous copper wire that grounds all metal components and prevents electrical shock — and a dedicated electrical run from your home's panel to the equipment pad. If a bid doesn't mention bonding or electrical scope explicitly, ask for it in writing.
In North Carolina, the bonding inspection is required as part of the permitting process. The cost of the electrical run varies based on how far your main panel sits from the equipment pad. Proposals that include an "electrical allowance" are telling you the final number is still an estimate. Confirm what triggers costs beyond that figure before you sign.
Permits and Site Engineering
Reputable contractors pull permits — full stop. The fees themselves are modest, typically $400 to $900 in Iredell and Mecklenburg counties. What matters more is whether structural engineering is included in your proposal. Pools built on sloped lots or expansive clay soils may require a stamped engineer's letter. If your property has any meaningful grade change, confirm the bid explicitly addresses it.
A contractor who suggests you can work around the permit is not someone you want managing your project.
What's Almost Never Included
Even thorough proposals typically exclude: landscaping disturbed during excavation, irrigation line repairs, pool safety fencing (required by state law in both North Carolina and South Carolina), retaining walls on sloped lots, and electrical subpanel upgrades if your home's existing service is at capacity. These aren't tricks — they're genuinely outside most pool builders' scope. But knowing this upfront lets you budget accurately before you're holding an invoice you didn't expect.
Comparing Bids Side by Side
Build a simple spreadsheet. List the shell specs, equipment brand and model, deck square footage and material, and what's explicitly excluded from each proposal. If one includes a variable-speed pump, 1,100 square feet of travertine, and a salt system — and the other includes a single-speed pump, 800 square feet of standard concrete, and a chlorinator — those bids aren't $18,000 apart. They're quoting two different pools.
The cheapest bid is often cheap because it's building a cheaper pool. Your job is to know exactly what you're agreeing to before the first shovel moves.
Before You Sign
Rock Water Pools has been building custom pools across the Lake Norman area for over a decade. When you sit down with our design team, we walk through every line item before a dollar changes hands — scope, specs, equipment, exclusions, and what to expect at every stage of construction. No surprises, no change-order games. Call us at 704-450-1023 to schedule your consultation.
About the author
Rock Water Pools - Custom Pool Designer & Builder. Mooresville-based custom pool design and build team. Serving Lake Norman, Charlotte metro, and the Carolinas since 2008. Hundreds of completed concrete and fiberglass builds across NC and SC. Questions? Call or text (704) 450-1023.
17+ years building custom inground pools across the Carolinas.
