New Build Drainage
Drainage scope for new homes — stormwater, wastewater, sewer connections, and any required council inspections.
Learn more →Soak Pit Installation in Wellington
Stormwater has to go somewhere. We size and install soak pits that match your soil type, section size, and rainfall — so your driveway and lawn aren't flooding every winter.
Service · Soak Pit Installation
What’s involved
Based in Upper Hutt? We've got a dedicated page covering soak pits in Upper Hutt — local soil notes, UHCC sizing, and suburb-specific coverage.
A poorly-sized soak pit is a hole in the ground that floods. A correctly-sized soak pit is the difference between a usable backyard in winter and a swamp. The difference comes down to soil percolation, expected rainfall, and how the system ties into the rest of the stormwater on your property.
We assess the section and soil before quoting — clay vs sand vs loam all behave differently, and a one-size soak pit is a lottery. We size to council spec, install with geo-fabric and the right drainage rock, and tie it into existing stormwater wherever the layout allows.
- Section + soil percolation assessment
- Council-spec sizing for your rainfall and runoff
- Geo-fabric wrap and proper drainage rock
- Tied into existing stormwater where possible
- Designed for the long haul — not the next 12 months
Why Double Dz
Sized properly the first time.
Most of the soak pits we get called to fix were undersized — built to a guess rather than a calculation. The cost of doing it right the first time is usually less than the cost of redoing one that fails. Get it right and forget about it.
- Owner-operated — call the man holding the camera
- 5★ Google rated across all reviews
- Free, on-site quotes
- Fully qualified drainlayer for council sign-off
Soak pit drainage solutions for Wellington sections
A soak pit is one of several stormwater drainage solutions we fit to the section in front of us — not a one-size template. Which option works depends on your soil, your fall, and how much roof and paved area drains to it:
- Clay soils (common across the Hutt Valley) — slow to drain, so the pit is sized larger or paired with an overflow to a council connection where one exists.
- Free-draining sand or loam — percolates quickly; a correctly-sized pit usually handles the load on its own.
- Tight or sloping sections — a soak pit can be run with surface channel drains or a rubble drain to move water away from the house first.
- New builds & extensions — onsite stormwater is sized to the consented roof and hardstand area and signed off with the council.
Every pit is wrapped in geo-fabric and backfilled with proper drainage rock so it keeps working for 20+ years. If you're not sure a soak pit is the right answer, we'll assess the section and tell you straight — sometimes the fix is a repair or re-lay of an existing line, not a new pit. Based in Upper Hutt? See our dedicated soak pits Upper Hutt page.
Soak Pit Installation — frequently asked questions
You need one if your stormwater can't connect to council mains, if you have flooding in winter, or if a new build/extension requires onsite stormwater management. We'll do a site visit and tell you straight up if you need one.
It depends on your roof + paved area, your soil type, and Wellington rainfall data. We'll do a percolation assessment and size to council spec — undersizing is the most common failure mode in soak pits, so we don't guess.
Typical residential soak pit installs are 1–2 days, depending on access, depth, and how much excavation is required. We give a clear time estimate before starting.
For most existing properties, no — but new builds, major renovations, and properties on shared stormwater systems often do. We handle the council coordination where required, and tell you up front if consent is needed.
A correctly-sized and properly-installed soak pit with geo-fabric wrap should last 20+ years before needing any servicing. Skipping the geo-fabric or the right drainage rock is what cuts the lifespan in half.
Other drainage services
One owner-operated crew across the wider Wellington region. Whatever you've got going on with your drains, we can sort it.
Blocked Drains
Toilet backing up? Gully overflowing? Shower draining slow? We unblock fast — usually same-day, including after hours.
Learn more →Soak Pits — Upper Hutt
Local to Trentham, Heretaunga, Silverstream, Te Marua. UHCC-spec sizing, real percolation testing.
Learn more →Got a drain problem? Let's sort it.
Free quotes, fast response, and we'll explain what we're doing in plain English. Call us or send a message — we'll be back within the hour during work hours.