Concrete Slab Scanning for Residential Homes in BC

Why This Scan Matters

A modern BC home — even a townhouse or laneway dwelling — is built around several concrete elements that carry hidden hazards. Basement slabs are typically 4-6 inches thick over compacted gravel and may contain rebar at mid-depth, perimeter drain pipes, or PEX hydronic loops for radiant heating. Garage slabs often house sleeved electrical conduits feeding sub-panels or EV chargers. Suspended slabs over crawlspaces or below upper-floor bathrooms hide a tight grid of structural steel and embedded plumbing. Drilling blind into any of these can mean a flooded basement, a tripped breaker, or a serious structural repair.

Our residential concrete-scanning service is built specifically for homeowners, renovators, and the trades who work in BC houses. We bring portable GPR equipment that maps embedded rebar, hydronic loops, electrical conduit, and water lines in 30-60 minutes per area, marks every hit on the slab in colour-coded paint, and emails you a PDF report you can hand to your contractor. The whole point is simple: never drill, core, or saw-cut into your slab without knowing what’s underneath.

Homes built before 1980 typically have lightly reinforced slabs and original copper waterlines; homes from 1990-2010 often have hydronic radiant loops in basement and bathroom floors; modern homes (2010+) routinely have a denser rebar mat plus low-voltage cabling for smart-home wiring buried in slab. Our technicians have seen all three patterns across thousands of BC properties since 1999, so we know what to look for in each era.

What We Detect Inside the Concrete

Concrete is rarely “just concrete.” Modern slabs in BC carry a tight grid of structural steel, electrical conduits, water lines, low-voltage cabling, and — in post-tensioned construction — high-tension cables that will fail catastrophically if cut. Our scans map every embedded element before any drilling, coring, or cutting begins.

Common Scenarios We Solve On This Page

Pre-renovation basement scan

You’re finishing a basement and need to anchor new walls, install a sub-panel, or rough in a bathroom. We scan the floor footprint, mark embedded rebar and any radiant loops, and your framer can drop anchors with confidence — no cracked-pipe surprise mid-build.

Garage floor before EV charger / sub-panel

Modern EV chargers need a 240V circuit and many BC garages have sleeved conduit already buried. We scan the route from panel to charger location, locate existing conduit, and identify safe drilling zones for new anchor bolts and the charger mount.

Radiant-heated floor — leak suspicion or anchor zones

Hydronic PEX loops in a residential slab are roughly 6-9 inches apart, run at low pressure (~25 PSI), and any puncture is a major repair. We thermally trace the loops, GPR-map them, and you get a printable plan showing safe vs no-drill zones.

Plumbing slab leak — locate before opening the floor

A water bill spike or a damp spot on the slab usually means a copper or PEX line under concrete is leaking. We acoustically pinpoint the leak, mark the exact spot, and you save 70-90% of the demolition cost versus opening the whole slab.

Adding a load-bearing wall or column over a slab

New beams and columns over existing slabs need anchored footings. We map the slab’s rebar grid so structural anchors land between bars, hitting clean concrete instead of cutting reinforcement.

Who Books This Type of Scan

Homeowners planning a basement finish, hydronic-floor retrofit, EV charger install, or laneway-suite build typically book us before signing a contractor’s renovation scope. The scan report sets up the contractor for a clean, predictable job.

General contractors and renovators who don’t want a hydronic-loop puncture eating their margin. The cost of our scan is almost always less than a single repair-and-remediation invoice.

Real estate buyers and sellers with concerns about hidden plumbing or structural issues use our scans during due diligence — particularly on heritage homes, post-flood properties, and houses with finished basements where the slab can’t be visually inspected.

Insurance adjusters and restoration contractors after a slab leak or flood, where the source and extent of damage need objective documentation before remediation begins.

Our Concrete Scanning Process — Step by Step

1. Pre-scan briefing

Before we step on site we want your drawings, photos, the exact intent (“I need to core eight 4″ holes through this 8″ suspended slab”), and any constraints — live wiring, occupied tenant space, sensitive equipment below. A 5-minute call almost always saves a costly surprise.

2. Site walk & grid layout

On arrival the technician confirms safe access, marks a working grid (typical 1×1 m or 1×1 ft), and photographs baseline conditions. If the slab is dirty or coated we sweep and may light-sand to ensure good antenna contact.

3. GPR scanning passes

We run an orthogonal grid with our 1600/2000 MHz concrete antenna — one set of lines in the X-direction, one in the Y. The real-time image is reviewed on screen; hits are paint-marked on the slab directly as the survey progresses.

4. Verification & cross-check

For high-stakes work (PT slabs, deep cores, occupied buildings below) we cross-verify with a secondary method — electromagnetic locator, half-cell, or impact-echo — to remove false positives and pin down depths.

5. Marking, photos & report

Every embedded element gets a colour-coded mark on the slab (red = PT, blue = rebar, green = conduit, yellow = water/hydronic). Before we leave you receive on-site photos and, on the next 1-2 business days, a stamped PDF report with annotated drawings.

6. Standby for drilling/coring

For complex jobs we stay on site while your contractor drills the first 1-2 holes, so any unexpected reading can be addressed in real time. Once we’re confident, we hand off and you continue safely.

Equipment We Bring on a Concrete Scan

Every instrument is calibrated and traceable. Calibration certificates can be supplied with the report on request — useful for tenders, insurance claims, and government work.

What Does a Concrete Slab Scan Cost in BC?

Concrete scanning is priced by the technician’s time and the scope of marking required. As a guide for budgeting:

• Small single-area scan (one room, 1-2 cores) — typically a half-day rate, suitable for residential or single-suite work.
• Medium scope (full floor plate, multiple drill zones) — full-day rate; includes orthogonal grid, marking, and PDF report.
• Multi-floor or PT slab survey — quoted by floor area; PT slabs require additional verification time.
• Stand-by during drilling — hourly add-on; recommended for any post-tension or occupied-suite work below.
• After-hours / weekend work — premium quoted upfront; common for retail and hospital scans where daytime access isn’t possible.

Every quote is itemised and emailed before we mobilise. There are no junk fees, no minimum subscriptions, and no surprise add-ons. Get an honest number at (604) 269-5325.

BC Building Code & Worksite-Safety Context

WorkSafeBC and the BC Building Code don’t mandate a concrete scan by name — but they do mandate that you not cut, drill, or core into a structural slab without first verifying what’s inside. Scanning is the standard of care, and any competent general contractor or strata council will expect to see scan documentation before drilling proceeds.

For post-tensioned slabs the bar is higher still: cutting a PT cable is treated as a near-miss safety incident even when no one is injured. Most municipalities (City of Vancouver, City of Burnaby, City of Surrey, District of West Vancouver, City of Victoria) will ask to see a scan report as part of any tenant-improvement permit involving slab penetrations.

Our reports include the technician’s name, scan date, equipment used, slab area covered, and a marked drawing. That documentation is enough for almost every permit, insurance, and warranty conversation in BC.

Service Areas Across British Columbia

We mobilise to Vancouver, Burnaby, Surrey, Richmond, Coquitlam, North Vancouver, West Vancouver, Delta, Langley, Maple Ridge, New Westminster, Port Coquitlam, Port Moody, White Rock, Abbotsford, Chilliwack, Mission, Squamish, Whistler, Victoria, Nanaimo, Kelowna, Kamloops, Prince George, and most BC communities in between. For a full list see our service areas hub.

Outside the Lower Mainland we typically batch concrete-scan work with other inspections to keep mobilisation fair. Call (604) 269-5325 with your address and timeline and we’ll quote travel honestly.

Why BC Property Owners Choose AnyLeak for Concrete Scanning

• Since 1999 — over two decades of BC concrete work, from heritage West-End buildings to modern high-rises in Yaletown and Burnaby.
• One responsible technician per job — no junior left alone with your slab. Senior leads run every PT and high-risk scan personally.
• Written, stamped reports — every scan ends with annotated drawings, photos, and notes your contractor, architect, or insurer can act on.
• Insurance-friendly documentation — adjusters across BC accept our reports as expert evidence for water-loss, structural, and pre-renovation claims.
• BC-wide coverage — Vancouver, Fraser Valley, Sea-to-Sky, Vancouver Island, Okanagan, Kootenays, and Northern BC. Travel charges are quoted upfront, never hidden.
• Standby during drilling — for high-risk cores we stay on site through the first holes so any anomaly can be re-scanned on the spot.

Frequently Asked Questions