Poolside Cabana with Changing Room Build

We want a small standalone structure next to our in-ground pool that combines three things in one footprint: a proper changing room, closed storage for pool gear, and a shaded lounge corner where we can sit out of the sun after a swim. The building will sit on a concrete pad roughly nine by twelve feet, and the first job is getting that slab right so close to standing water — it needs a slight slope away from the pool coping, a vapor barrier under the pour, and edges finished so nobody catches a toe on a lip when walking in wet.

For the walls we want moisture-resistant framing: pressure-treated bottom plates, studs on sixteen-inch centers, and sheathing that can handle splashes and humidity without swelling or going soft over a few seasons — cement board or a comparable exterior-rated panel rather than plain plywood. The changing room itself should be roughly five feet square with a bench, hooks for towels and swimsuits, and a small mirror; a curtain or a door with a louvered vent keeps air moving so things don’t stay damp overnight.

Next to the changing room we’d like a storage bay with shelving for floats, noodles, a pool skimmer, chemical containers on a raised shelf away from anything electrical, and a hook rail for the vacuum hose. The remaining third of the structure is an open-sided lounge bay under the same roofline, with a low half-wall, a couple of built-in bench seats, and enough headroom for two folding loungers to fit under cover during a sudden rain.

The roof should overhang all four sides by at least sixteen inches to keep water off the walls and give real shade over the lounge bay, and we’d like a ceiling fan wired into the lounge section along with two exterior-rated light fixtures — one over the changing room door and one under the lounge overhang — run on a dedicated GFCI circuit from the house panel. All exposed wiring needs weatherproof conduit and boxes given the proximity to the pool.

We’re open to horizontal lap siding or board-and-batten, painted or stained to roughly match the house trim, and a composite or pressure-treated deck board floor in the lounge bay that won’t stay slick when wet. Please include your plan for footings or pad prep, framing and siding materials, roofing (we lean toward asphalt shingle to match the house, but open to metal), the electrical run, and a realistic timeline — we’d like the whole project wrapped up within the next couple of weeks while the weather holds.