ORANGEVALE, CA — After six decades of exclusive gunite pool construction, Century Pools is clarifying its position on pool construction methods as California homeowners face increasing confusion in a crowded marketplace.
The family-owned company, founded by Brian O’Neal in 1964 and now led by CEO Patrick O’Neal, builds only gunite pools for residential properties. This focus stems from what the company identifies as fundamental differences in how construction methods perform in California’s challenging soil conditions.
The Misconception Driving Market Confusion
“The biggest misconception we hear is that all pools are created equal,” explains the Century Pools team. “Homeowners see fiberglass or vinyl options advertised as ‘durable’ or ‘custom,’ and they assume those will last just like a gunite pool.”
The reality differs significantly in California’s environment.
With shifting clay soils, temperature swings, and drought cycles, pre-fabricated shells and thin concrete layers can crack, leak, or fail within just a few years. Properly engineered gunite with a rebar framework can flex with the soil and last decades.
The construction method matters just as much as the design and finish when it comes to a pool that truly endures.
Understanding California’s Soil Challenge
California’s clay soils create unique structural demands that many pool construction methods cannot address.
These soils expand when wet and contract when dry, putting uneven pressure on anything built on top. According to the American Society of Civil Engineers, as many as one in four houses in the United States has some form of damage caused by expansive soils—with annual damages regularly costing more than tornadoes, floods, earthquakes, and hurricanes combined.
In a gunite pool, the steel rebar acts like a flexible skeleton within the concrete shell.
As the soil moves, the rebar allows the shell to shift minutely without cracking, distributing stress across the structure. You won’t see the movement—it’s just a fraction of an inch—but it prevents hairline cracks, tile separation, and leaks.
Pre-fabricated shells or thinner concrete methods don’t have that built-in flexibility. They’re rigid, so the same soil movement can cause immediate cracking or structural failure.
That subtle, engineered flexibility allows a gunite pool to last decades, even in California’s challenging conditions.
Three Generations of Refined Knowledge
When Brian O’Neal started Century Pools in 1964 with a shovel in hand, the fundamentals of quality were already there: proper rebar placement, careful gunite application, and attention to the site.
But the understanding of soil dynamics and structural engineering has evolved over three generations.
“Back then, it was more hands-on intuition,” the team explains. “Today, we combine that intuition with modern engineering, soil analysis, and decades of experience observing how California soils behave.”
The principle hasn’t changed: build it right from the start.
But the tools and knowledge have refined what “doing it right” really means, ensuring pools last not just years, but decades.
This generational knowledge shows up in unexpected ways. On one project with heavy clay soil and a natural slope, the homeowner wanted a freeform pool matching their Pinterest inspiration. A newer builder might have poured the shell to the plan and hoped for the best.
Drawing on lessons passed down from Brian O’Neal, the team adjusted rebar placement, reinforced key stress points, and slightly modified curves to accommodate soil movement.
Those small decisions were invisible to the homeowner at the time.
But a few years later, the pool settled perfectly—no cracks, no leaks—while similar pools built without that insight were already showing stress.
Balancing Vision with Engineering Reality
Most homeowners assume that pool builders just follow the plan they approve—draw it, pour it, done.
The reality involves more nuance.
Century Pools starts with the homeowner’s inspiration: the shapes, shelves, waterfalls, or curves they love. Then they overlay what the soil, slope, and rebar placement demand.
Sometimes that means subtly adjusting a curve or moving a shelf a few inches.
Homeowners usually don’t notice these changes visually, but they make a huge difference structurally. The pool looks exactly as imagined, but it’s engineered to flex with the soil, avoid cracks, and last for decades.
“We communicate these technical choices in plain language,” the team explains. “We use visuals, examples from past projects, and relatable analogies—so they understand the reason behind each change without needing an engineering degree.”
The goal is transparency and trust.
The Foundation Analogy
One comparison resonates particularly well with homeowners: comparing the pool to a house foundation.
You wouldn’t skimp on the concrete and steel in your home’s foundation. The same logic applies to the skeleton of your pool.
Gunite with properly tied rebar is like reinforced concrete for a home—it gives the structure strength, flexibility, and longevity. Cheaper alternatives might look fine on the surface, but over time they can crack or shift with the soil.
Research supports this perspective. Gunite pools can last 50 years or more with proper maintenance, compared to fiberglass pools with typical lifespans of 20 to 30 years.
That represents decades of additional family use and memories.
Investing in gunite upfront saves money, stress, and repairs decades down the line.
Why Residential-Only Matters
Century Pools works exclusively on residential projects—no commercial work.
This focus reflects a specific philosophy about where meticulous attention matters most.
“Residential pools might be smaller than a hotel or a celebrity mansion, but the stakes are just as high,” the team explains. “These are family backyards—kids, pets, and daily use—and the soil and site conditions are every bit as challenging.”
Cutting corners on rebar, gunite thickness, or plumbing doesn’t just risk leaks or cracks. It risks safety and ongoing maintenance headaches.
By focusing exclusively on residential projects, Century Pools can give every homeowner the same level of meticulous engineering, hands-on oversight, and quality control that ensures the pool lasts decades.
Every backyard deserves that attention.
The Engineering Behind Gunite Excellence
Gunite construction involves specific technical requirements that directly impact long-term performance.
Building codes place limitations on rebar size and spacing in gunite construction. Maximum size is No. 5 bars, with minimum clearance of 2.5 inches between parallel bars. Proper steel placement prevents shadowing—voids behind rebar—and ensures structural integrity.
In extremely expansive clay soils, contractors sometimes build double steel cages for the entire pool and might put 8 to 10 yards of concrete into a single sun shelf.
This demonstrates the extreme engineering required for California’s challenging soil conditions.
Gunite is applied as a dry mix that’s hydrated at the spray nozzle, creating a dense, rock-hard monolithic shell with no seams or weak points. It’s the same commercial-grade method used for resort and hotel pools.
Addressing the Investment Question
The initial cost of a gunite pool runs higher than alternatives.
But the comparison shifts when you consider the full timeline.
Over a 10-year period, gunite pools’ structural integrity and resurfacing needs compare favorably to the complete replacement costs and structural failures common with inferior construction methods in California’s challenging soil conditions.
California building codes require “prudent action” from contractors when dealing with expansive soils, including pre-saturation, control joints, adequate thickness, and sufficient reinforcement.
Legal liability falls on contractors who skip these steps.
Century Pools’ approach addresses these requirements from the start, protecting both the homeowner’s investment and peace of mind.
The Century Pools Position
After 60 years of building pools in California, Century Pools maintains a clear position: gunite construction with proper rebar engineering represents the only method that reliably addresses California’s soil challenges while delivering true customization.
“We know backyard pools are more than a luxury,” the company states. “These are the treasured meeting places where memories are made, family events are held, and new beginnings are celebrated.”
That understanding drives the meticulous construction approach that has defined the company since Brian O’Neal picked up a shovel in 1964.
The company continues to operate under the mission “Building Your Dreams Since 1964,” with a vision of offering custom pools as a quality and affordable solution to escaping the California heat.
Now led by Patrick O’Neal, who has served as CEO for 15 years, alongside Michael and Casey O’Neal, the company represents a multigenerational commitment to excellence in residential pool construction.
Building lasting relationships based on trust and shared dreams remains central to every project.
Looking Forward
As the pool construction market continues to evolve, Century Pools maintains its focus on gunite excellence for California homeowners.
The company’s short-term goal is straightforward: build more swimming pools than last year.
The long-term vision reaches further: create a sustainable business that carries on over the years, continuing the family legacy by creating spaces that families cherish for generations.
For homeowners considering a pool project, Century Pools’ position offers clarity in a confusing marketplace: the construction method you choose determines whether your pool becomes a decades-long family gathering place or a source of ongoing maintenance challenges.
In California’s challenging environment, that choice matters more than most homeowners realize.
About Century Pools
Founded in 1964 by Brian O’Neal, Century Pools specializes in custom gunite pool construction for residential properties in California. Headquartered in Orangevale, California, the family-owned company is now led by CEO Patrick O’Neal and continues the founder’s commitment to meticulous craftsmanship and lasting client relationships. Century Pools serves homeowners throughout the region, building custom pools designed to withstand California’s unique environmental challenges while creating cherished family spaces for generations.
For more information about Century Pools’ gunite construction approach, visit their website or contact their Orangevale office.
