Outdoor Shower
The muddy bike ride back from the Burke-Gilman that ends at the back porch with the homeowner standing in cycling clothes deciding whether to track mud through the house or strip in the back yard and freeze. The post-beach day at Alki or Golden Gardens that ends with sand in every fold of clothing and a child whose hair has dried into a salt helmet. The post-trail-run quick rinse before walking into the house after a Mount Si or Cougar Mountain morning. The garden cleanup with hands and forearms covered in dirt that needs more than the hose-bib at the back wall. The wet-dog rinse after a Discovery Park beach session. Outdoor shower is the Pacific Northwest practical luxury — the carpentry build that turns the side-yard or back-yard corner into a usable cedar-enclosed shower space with a real mixing valve, a real fixture, and a real drainage plan. Handis owns the carpentry — cedar enclosure framing and slats, concrete base or cedar slat decking with the grated drain, fixture mounting, drainage trenching. The licensed Washington L&I plumber handles the hot and cold water supply (tee'd from indoor plumbing) and the drain connection (to a drywell or a permitted sewer connection). From $3,000 for a cold-only basic cedar enclosure on a drywell to $8,000 for a top-end build with hot/cold mixer, premium fixture, and pergola overhead. Three to six working days. The most-used outdoor-wellness build we do.
Service
How the Outdoor Shower Install Works
Six sequential phases from site review to first hot rinse — the actual working sequence we run on every outdoor shower install, with the licensed Washington L&I plumber on two scheduled visits inside the project timeline.
Site Review + Plumbing Tap Plan + Drainage Plan
Estimate visit walks the property and identifies the best location for the shower (typically against an exterior wall that backs to indoor plumbing for the shortest hot/cold supply run), confirms the supply tap location (bathroom plumbing, basement mechanical room, or laundry room), maps the drainage route (drywell location, surface drainage, or sewer connection per Seattle DCI permit requirements), and confirms the cedar enclosure dimensions and the mixing valve and fixture selection.
Plumber Visit 1 — Supply and Drain Rough-In (Day 1-2)
Licensed Washington L&I plumber arrives to tee the hot and cold supply from the indoor plumbing (typically a short run through the bathroom wall or up from the basement), run insulated supply piping through the house wall to the outdoor shower location, install the rough-in valve body. Drain trenched from the shower location to the drywell or sewer connection point, drain pipe set with proper slope, the drainage build (drywell excavation and gravel-and-fabric installation) completed. Plumber pulls the plumbing permit under their license.
Base Construction — Concrete Pour or Cedar Slat Frame (Day 2-3)
For concrete bases, the location excavated, formed, reinforced, poured 4 inches thick with a central or off-center drain (sloped 1/4-inch per foot toward the drain), cured for 3 to 4 days before the enclosure goes on (high-early-strength concrete cures in 2 days if the schedule is tight). For cedar slat decking, the sleeper system framed over the prepared drainage substrate, slats fastened with stainless screws at 1/2-inch slat spacing for water shed.
Cedar Enclosure Construction (Day 3-4)
Cedar 4x4 posts set at the enclosure corners (anchor-bolted to concrete base, or set into post bases on the cedar slat decking), 2x4 cedar rails framed between posts, cedar 1x4 or 1x6 slats fastened at the slat spacing specified (1/2 to 3/4-inch for full privacy with airflow). Enclosure typically three-sided with the fourth side opening to the house exterior; four-sided with a swing access door is an upgrade. All stainless-fastened.
Plumber Visit 2 — Mixer + Fixture + Final Connection (Day 4-5)
Licensed plumber returns to install the hot/cold mixing valve at chest height, the fixed shower head at 78 to 82 inches, the handheld on slide bar (if specified), and the supply line connections. Hot/cold blend tested, fixture flow tested, drain flow tested. Plumber schedules the plumbing inspection with the AHJ. Permit copy provided at project close.
Optional Details + Finish + First Rinse (Day 5-6)
Optional details installed — built-in cedar bench, towel hook strip, robe hook, soap shelf, hose connection for landscape use. Cedar enclosure left bare to silver naturally (the most popular PNW choice) or oiled with Penofin or TWP for warm-tone retention. Site cleaned, debris hauled, the closeout walk-through with the homeowner including a fixture demo and a first hot rinse confirmation.
Outdoor Shower Pricing
Final pricing depends on the scope (cold-only vs hot/cold, base type, enclosure size and door spec, fixture brand, drainage routing), the plumber portion (supply run distance, sewer permit if applicable), and any optional details (bench, hook strip, pergola overhead). The licensed Washington L&I plumber portion is included transparently on every quote. Request a free in-home estimate for an accurate quote against your actual site.
Tell us where the shower would go on your property and the use case (post-bike, post-beach, post-trail, wet-dog) — we will quote the carpentry plus the licensed plumber portion line by line.
Why Seattle Homeowners Book Handis for Outdoor Showers
An outdoor shower in Seattle sounds like a summer-only feature and turns into a year-round utility once it is installed. The summer use case is obvious — post-beach, post-trail, post-garden, post-bike, wet-dog. The winter use case is the one that surprises homeowners — a hot rinse after a 38-degree drizzly January trail run is one of the best small luxuries the property offers, a quick rinse off muddy hiking boots and gear before walking into the house keeps the entryway clean, the post-yard-work cleanup in spring rain is genuinely pleasant rather than miserable. The system only works year-round if it has hot water and a real mixing valve. A cold-only outdoor shower in PNW summer where the cold tap is 50 degrees is a once-or-twice-a-summer novelty; a hot/cold shower is daily use. Handis builds for the daily-use case unless the budget specifically demands cold-only. Pure carpentry plus a single licensed-trade handoff. Three to six working days. The licensed Washington L&I plumber pulls the plumbing permit and stands behind the supply and drain work under their license; we own the carpentry top to bottom.
Estimate
Tell us where the outdoor shower would go on your property (side yard, back yard, deck-adjacent), the primary use case (post-bike, post-beach, post-trail, garden cleanup, wet-dog), the hot/cold preference (cold-only basic, hot/cold standard, hot/cold premium), the base preference (concrete or cedar slat decking), the soil type if you know it (clay vs sandy), and any constraints (existing supply tap location, budget range, fixture brand preference). We send back a clear estimate with the licensed plumber portion named line by line and a project timeline.
Customer Reviews
Outdoor shower install reviews from verified Seattle-area Handis customers.
Outdoor shower with hot and cold mixer on the side of our Magnolia home for post-Discovery Park trail runs and Golden Gardens beach days. Handis built a cedar enclosure with slat decking and a grated drain, the licensed plumber tee'd into our existing hot and cold supply lines (no new water heater needed) and ran the drain to a French drain. Four working days. The first hot rinse after a 38-degree January trail run made the whole project worth it.
Cold-only outdoor shower as Phase 1 off our back deck in West Seattle — budget-conscious approach for summer beach and gardening use. Cedar enclosure on a drywell, basic fixed shower head, two working days plus the plumber. Cost came in at $3,200 all in. The plumbing rough-in was left ready for a Phase 2 hot/cold conversion next year. The cold rinse is fine for summer use; we will appreciate hot in October.
Top-end build with full pergola, premium Sonoma Forge fixture, and a built-in cedar bench on our Mercer Island side yard. Concrete base with central drain, four-sided cedar enclosure with a swing door, hot/cold mixer with handheld and rain head, cedar pergola overhead for partial rain coverage. Six working days. The handheld is the unexpected best detail — rinsing the dog, the bikes, the gardening tools. Uses every week year-round.
Outdoor shower and a small dressing area off our master bedroom in Bellevue. Cedar enclosure on a concrete base, hot/cold mixer, hook strip and soap shelf, towel bar. Plumber tee'd from the master bathroom plumbing right behind the wall — short run, easy install. Four working days. We use it daily in summer for rinsing off after pool use and weekly in winter after yard work.
Outdoor shower with sewer drain connection on our Queen Anne home — heavy clay soil meant a drywell was not feasible at the location we wanted (right outside the back door). The licensed plumber pulled a sewer permit from Seattle DCI for the drain connection with proper P-trap and venting. Cedar enclosure with hot/cold mixer, fixed and handheld heads. Five working days total. The location right outside the back door is exactly where we needed it for the daily post-bike rinse.
Frequently Asked Questions
Common questions about Handis outdoor shower installs — scope, plumbing, drainage, fixtures, scheduling, and what to expect.