It’s one of the first questions homeowners ask, and it’s a fair one. You’re about to invest significantly in your property, your lifestyle, and the way your family spends time at home. Knowing how long the process takes helps you plan, set expectations with your household, and time the project around what matters, whether that’s a summer entertaining season or a major home renovation already in progress.
The honest answer? Most custom inground pool projects in Marietta fall within the 10- to 16-week range once construction begins, though some extend beyond that depending on design complexity, permitting, and site conditions. The full process, including design and permitting, often spans several months from your first conversation to your first swim.
Working with an experienced inground pool builder who knows Cobb County’s permitting process and local soil conditions from the start makes a meaningful difference in how smoothly that timeline moves.
Here’s what that timeline actually looks like, phase by phase.
Phase One: Design and Pre-Construction (Weeks 1 to 4)
Before a single shovel breaks ground, there’s real work happening behind the scenes. At Watershed, this phase begins with a site evaluation and design consultation, during which we learn how you use your backyard, what you’re drawn to aesthetically, and how the pool will integrate with your home’s architecture and existing landscape.
From there, our design team develops a detailed plan that includes the pool shape, finish materials, water features, decking, and any required structural coordination. If you’re incorporating a cabana, outdoor kitchen, or fire feature, those get built into the plan from the beginning rather than treated as afterthoughts.
Once the design is finalized and approved, we move into the permitting phase. In Cobb County and throughout the greater Marietta area, pool permits require structural drawings, site plans, and inspections coordinated with local building departments. This is not a step to rush. A permit pulled the first time correctly protects your investment, ensures code compliance, and keeps the construction schedule from stalling mid-project.
Phase Two: Excavation and Structural Work (Weeks 5 to 7)
Once permits are in hand, excavation begins. Depending on your yard’s topography and soil composition, this phase can move quickly or require additional coordination. Marietta’s terrain varies considerably across neighborhoods, from flat suburban lots near East Cobb to sloped properties in West Cobb and around the Kennesaw area. An experienced builder accounts for these variables in the bid, not after the fact.
After excavation, the structural shell is formed. For concrete pools, this means placing steel rebar in the exact configuration specified by the engineering drawings, then applying shotcrete or gunite to form the shell. This is where structural expertise becomes visible. How well this phase is executed has a major impact on the pool’s long-term durability.
What can affect this phase?
Unexpected rock, high water tables, and utility conflicts are the most common causes of delays during excavation. A builder who has worked extensively in Marietta and Cobb County will have encountered these conditions before and will be better positioned to navigate them without derailing the schedule.
Phase Three: Plumbing, Electrical, and Mechanical (Weeks 7 to 10)
With the shell in place, the work shifts below the surface. Plumbing lines, drains, returns, and any water-feature plumbing are roughed in and pressure-tested before backfilling. Electrical runs for lighting, equipment, and any automation systems are installed and inspected. If the project includes a gas line for a fire feature or an outdoor kitchen, that coordination happens here as well.
This phase involves multiple licensed subcontractors working in sequence, which is one reason builder coordination matters so much. At Watershed, we manage all permitting and inspections for every trade and keep the schedule moving, so you’re not left tracking down subcontractors or waiting on inspection updates.
Phase Four: Tile, Coping, and Decking (Weeks 10 to 13)
This is where the pool starts to look like what you imagined. Waterline tile gets set, coping is installed along the pool’s perimeter, and the decking material, whether that’s natural travertine, bluestone, brushed concrete, or another finish, begins to take shape around the pool.
If your project includes an outdoor living area, a cabana, or an outdoor kitchen, the construction typically runs in parallel during this phase. The goal is a finished space that feels cohesive and intentional, where the pool, the deck, and the surrounding elements all belong together rather than looking like separate projects assembled over time.
Phase Five: Interior Finish and Water (Weeks 13 to 16)
The final major phase covers the pool’s interior surface. Watershed works frequently with PebbleTec and similar aggregate finishes, which offer durability, texture, and a naturalistic quality that complements the organic pool designs we’re known for. Once the interior is applied and cured, the pool is filled, water chemistry is balanced, and equipment is commissioned.
This is also when final inspections take place, and any punch-list items get addressed. You can see how these phases come together in practice across our project stories. We don’t consider the project finished until the space is exactly what we designed together.
What Can Extend the Timeline?
A few variables are worth knowing about upfront:
- Permitting delays. Cobb County’s permitting office processes applications on its own schedule. Submitting complete, accurate drawings the first time reduces back-and-forth, but review times can vary, and some wait time is always possible.
- Design changes during construction. Changes made after construction begins can add time and cost. The more resolved your design is before we break ground, the smoother the build will be.
- Weather. Concrete work, in particular, is sensitive to temperature and rainfall. Extended wet periods in spring or unusual cold snaps in late fall can pause certain phases.
- Scope additions. If you decide mid-build that you want a water feature you hadn’t originally planned, or you want to expand the deck area, that’s workable, but it extends the timeline. If you’re considering a more significant change, our pool renovation services are worth understanding as a separate conversation.
FAQs About Inground Pool Build Times in Marietta
How long does it take to get a pool permit in Cobb County?
Permitting timelines vary. Homeowners should plan for several weeks for permit review and approval in Cobb County, typically in the two to four-week range, though review volume and revision requests can push that longer. Submitting a complete application with proper engineering drawings from the start is the best way to avoid unnecessary delays.
Can I start planning for a summer pool in the fall?
Yes, and that’s often the ideal approach. Starting the design and permitting process in fall or early winter gives you the best chance of being in the ground by late winter or early spring and swimming by early summer. Waiting until spring to start the process often means a late-summer completion at best.
Does pool complexity affect how long construction takes?
It does. A freeform pool with a grotto, beach entry, flush-overflow spa, and integrated water features requires more phases and greater coordination than a straightforward rectangular pool. We’re transparent about what your specific design requires, so there are no surprises.
What’s the difference between a 10-week and a 16-week build?
Scope and site conditions are the primary drivers. Simpler designs on straightforward lots tend to come in closer to 10-12 weeks. More complex projects with elevated outdoor living components, challenging terrain, or extensive feature sets typically run 14 to 16 weeks or more.
Does Watershed handle the permitting, or is that the homeowner’s responsibility?
We handle all permitting and coordination with local building departments, including structural, electrical, plumbing, and gas. That’s part of what you’re hiring us for.
Building on Marietta’s Terms
Every lot in Marietta tells a slightly different story. The slope of the yard, the proximity to mature trees, the soil beneath the surface, and the rhythm of the neighborhood all shape what’s possible and how long it takes to get there. That kind of local knowledge isn’t something you develop from a brochure.
Robert Davis and the Watershed team bring decades of experience building pools in Marietta and across Cobb County. We know what the permitting process requires, what the terrain tends to throw at a job site, and what it takes to deliver a finished space that still feels exactly right a decade later. When you’re ready to move from thinking about a pool to actually building one, we’re ready to walk through the process with you.
Find your Watershed moment. Reach out to start the conversation.