Saunas, steam rooms, cold plunges and contrast-therapy zones for gyms, spas, hotels, padel clubs and homes in Surabaya, built for daily use in tropical heat. 100+ projects in 3 years, a free site survey, an itemised quote and a written 2-year warranty. Price guide: a 2×2 m home sauna IDR 60–120 million, commercial saunas from IDR 150 million, a plunge tub installed within 3–7 days.
Tell us about your gym, hotel or home on WhatsApp and we send examples of finished builds. Need figures? Tap the second button and a project manager will call you back shortly.
What we build
Ten services — from a two-person home sauna to a complete hotel wellness zone. Each page lists genuine price brackets, build specifics, and honest answers to whatever Surabaya clients ask us most often over WhatsApp.
Hot rooms for facilities that cannot afford downtime: gyms, spas, hotels, padel clubs. Public-grade materials, industrial heaters with deep stone beds, ventilation sized from guest flow — strong enough for 16-hour days.
from IDR 150M
A daily heat ritual at your own house or apartment, delivered to the same standard as our commercial work: imported timber, wiring done right, and a full heat test before the keys change hands.
from IDR 60M
Chiller-cooled timber plunge tubs locking the water at 3–15°C — the sauna’s essential partner in a contrast circuit, from gym floors and padel clubs to a corner of a private home. Rather skip the build? Ready-made ice bath tubs ship with a chiller and arrive ready to fill.
from IDR 45M
One zone, three temperatures: sauna, cold plunge and jacuzzi arranged around a proper guest route — the anchor facility hotels, clubs and villas use to keep visitors around longer.
from IDR 250M
A standalone garden building with its own terrace and a deep roof overhang — drawn to stand up to Surabaya downpours and UV, in family yards and rental villas alike.
from IDR 80M
Fog at 40–45°C behind complete tanking, a drain-sloped floor and mosaic finishing — the spa favourite, built under a wet-room discipline entirely unlike a dry sauna.
from IDR 50M
Carbon panels radiating 45–60°C straight into the body on just 1.7–2.4 kW — the answer for low-power units, standing within 1–2 days and involving no wet trades.
from IDR 30M
Cooling machines of 1/2–1 HP that keep the water cold even when the tub cycles users all day long — paired with filtration and sanitation so the water stays fit for many bathers.
from IDR 25M
Supply plus fitting of a wellness zone’s inner organs: heaters, steam generators, chillers, automated controls, water systems — global brands with live warranties, handled by our own crew.
from IDR 100M
A tired old sauna? Inspection first, numbers second: from rotten panelling and deceased heaters to a full rejuvenation — inherited saunas that came bundled with the building included.
from IDR 15M
Recovery ecosystem
For padel clubs and modern gyms, contrast therapy is the defining recovery trend — and a new revenue engine for the business.
| Complex element | Commercial solution | Business effect |
|---|---|---|
| High-tech saunas | Finnish and herbal saunas with industrial heaters built for continuous duty | Fast muscle recovery after intense training and matches |
| Commercial cold plunges | Powerful chillers holding a stable low temperature under constant user flow | Instant inflammation relief and nervous-system stimulation |
| Hydromassage jacuzzis | Ergonomic tubs with reinforced filtration and adjustable jets | The final relaxation stage — longer visits and a higher guest spend |
Tropical climate
In Surabaya, year-round 80% humidity destroys a carelessly built sauna within 2–3 years. We build with layered defences.
Materials
Five choices — from economical pinewood to premium grade-A teak. Swipe to see each texture up close.
The gold standard. No resin, an aroma that lasts for years, and low heat conductivity so the walls never sting the skin. Imported.
Top pick — pricier, but the best
Indonesia’s finest: straight even grain, no knots, no sapwood. Naturally oily, so it stays remarkably stable in Surabaya humidity.
Local premium — top tier
The same teak with more character: mild colour variation, small sound knots, a thin sapwood streak. Equal strength, friendlier price.
Best value for money
Scandinavian spruce: bright, light and the most economical. The right call for a 2–4 person home sauna in normal use.
The economical option
Tropical hardwood for decking, terraces and outer framing. We never use it inside: its density makes it too hot to touch.
For the outsideSauna sizes
Seven formats, each documented in detail — floor dimensions, heater options, the PLN capacity they call for, materials, and ballpark pricing. Swipe to compare.
Smallest unit — apartments, premium kos, private studios
150 × 120 × 210 cm · Harvia 3.6 kW
IDR 55–70 juta View details →
Red cedar 2×2 m — the Surabaya family standard
200 × 200 cm · Harvia 6 kW + volcanic stones
IDR 75–95 juta View details →
Dark thermowood & onyx — for large homes and guesthouses
240 × 200 cm · Harvia 8 kW
IDR 110–150 juta View details →
Yard cabin — big homes, rental villas, weekend retreats
300 × 240 cm · Harvia 9 kW
IDR 150–200 juta View details →
Panoramic glass — the bridge from big homes to small business
350 × 260 cm · Harvia 10.5 kW
IDR 190–240 juta View details →
The gym & padel recovery engine — built for rush hour
400 × 300 cm · Harvia 12 kW
IDR 230–290 juta View details →
A twin-heater hot hall — hotels, spas and large gyms
500 × 350 cm · 2 × Harvia 10.5 kW
mulai IDR 300 juta View details →Up close
Joints, seals, door handles, heater stones — the parts a wide shot never reveals, and the ones that decide how long your sauna lasts. This is the distance we inspect our own work from.
Business efficiency
Commercial standards
Commercial duty means heaters running a dozen hours, constant user flow and maximum hygiene demands. Here is how we answer each.
| Construction node | Commercial solution | Business effect |
|---|---|---|
| Finishing materials | High-density timber free of resin pockets with a dedicated hygienic impregnation | Walls and benches never darken, disinfect easily and need no re-coating every six months |
| The sauna’s heart (heaters) | Industrial electric heaters with reinforced elements and an enlarged stone load | Continuous operation up to 16 hours a day with no overheat risk |
| Control | Remote monitoring and automated ventilation and temperature management | Staff run every parameter from a single panel — the human factor is gone |
Safety & inspections
Premium design
How it works
Tell us your part of Surabaya and the kind of sauna you're picturing — a two-line message does the job.
The same day, our manager calls to talk through what you need.
Photos of the room or plot — we immediately assess what is possible there.
Our team measures the site and checks your PLN electrical capacity.
We send a design visual and a detailed cost breakdown — transparent and free.
Price and schedule agreed, the deposit lands, imported materials are ordered.
Our team builds on schedule — you receive photo progress updates.
A full test heat-up together, then your 2-year structural warranty begins.
Real sessions
Where we work
We build across Greater Surabaya — from Gubeng to Sidoarjo and Gresik. Each area page explains which formats fit best there, with notes on electrical capacity.
Central Surabaya around Gubeng station and Jl. Raya Gubeng — family homes, apartments and offices. Our base and the district where we build the most.
The old prestige belt along Jl. Raya Darmo — large colonial homes and established families who want a private wellness room indoors.
The premium superblocks of West Surabaya — Pakuwon Indah and Pakuwon City with malls, apartments, gyms and fitness clubs: our favourite ground for commercial saunas.
The campus-and-hospital corridor of East Surabaya near Unair — middle-class homes and home gyms, where compact and infrared cabins fit best.
South-east Surabaya: the SIER industrial estate next to residential clusters like Rungkut Asri — both home projects and staff-wellness or gym facilities.
Fast-growing south-west Surabaya near Graha Family and Citraland — new houses with generous gardens: the best fit for an outdoor garden sauna cabin.
The regency south of Surabaya and the Juanda airport corridor — housing, airport hotels and spas: residential and commercial projects, logistics planned in.
The industrial city north-west of Surabaya — the JIIPE estate, large plants and staff housing: many sauna and recovery-zone projects for company facilities.
From the blog
Build your own sauna with clear boundaries: jobs safe to self-build, a Surabaya sourcing check, the assembly order, and the red lines of wiring and steam.
Sauna in tropical climate Surabaya: why dry heat differs from daily humidity, construction challenges, ventilation and vapour barrier, and the right format.
Contrast therapy benefits explained: the physiology, ideal temperatures, athlete recovery use, and chiller vs bagged ice for a cold plunge in Surabaya.
FAQ
Rough numbers first: a custom 2×2 m home dry sauna lands around IDR 60–120 million, an infrared cabin sits at IDR 30–70 million, budget IDR 50–100 million for a steam room, an outdoor cabin spans IDR 80–150 million, a chilled cold plunge comes to IDR 45–90 million, and commercial builds open at IDR 150 million. Every figure is indicative — the pricing page has the detail.
Count on 2–4 weeks of on-site work for a home sauna, with another 1–2 weeks while materials arrive. An infrared cabin goes up in 1–2 days, an outdoor cabin wants 1–2 weeks, a steam room needs a full 3–5 weeks so the waterproofing can cure properly, a cold plunge takes 1–2 weeks, and commercial fit-outs typically span 4–8 weeks.
We are based in Gubeng and regularly build in Darmo, Pakuwon, Dharmahusada, Rungkut, Wiyung, and out to Sidoarjo and Gresik. Local notes live on the areas page.
Yes — a recovery zone lifts average spend and member LTV, and in the low season becomes a standalone revenue stream. The numbers are on the commercial sauna page.
Some of it, yes: if carpentry is familiar territory, framing and panel work make a workable weekend project. Wiring, the heater and the vapour barrier should stay with a specialist, though. We wrote an honest guide: building your own sauna.
A 6–9 kW heater needs 7,700–11,000 VA — older homes on 2,200–5,500 VA need a PLN upgrade, which we help arrange. Where an upgrade is impossible, an infrared cabin runs on just 1.7–2.4 kW.
Our carpentry is covered by a written 2-year warranty, while heaters from Harvia, Sawo and Tylo carry their own 1–2 year factory cover. Spare parts sit ready in our Indonesian warehouse, so a swap takes days rather than months.
It's a different kind of heat altogether: 70–90°C of dry air at 10–20% humidity has nothing in common with a muggy 33°C harbour-city afternoon. That very contrast is what makes the recovery effect land. The full story is in the tropical climate article.
A photo or a rough floor plan of the space is enough to open the conversation. Gym and hotel operators: add your opening hours and an estimated daily guest count so the format recommendation lands right the first time. Coming back from us: a technical proposal, a first figure you can hold onto, and a free measurement slot.
Expect an answer inside 1–2 hours during 08:00–20:00 WIB
