For Sydney Owners of Already-Tiled Bathrooms, Ensuites, Laundries & Balconies

The bathroom is already tiled. The installer is gone. And now someone wants proof.

Council, a certifier, a buyer's solicitor or your strata want waterproofing evidence for rooms that were sealed years ago — and the certificate either never existed or doesn't cover every room. We provide the standard alternative: an independent evidence report documenting what the records show, what can still be observed, and what can't be verified without opening up.

Send Your Documents for a Fixed-Fee Quote or call Kevin on 0499 288 304 — fixed fee from $850 + GST, report within two business days

The situations that bring people here

Different letters, same problem: someone with authority wants paper about work that's hidden under tiles — and the paper doesn't exist.

Council has asked for a waterproofing certificate Usually for a Building Information Certificate (BIC) application — and the original installer can't be found, or never issued one.
You're selling, and the buyer's inspector flagged the reno "Renovated wet areas — no certification sighted" in a pre-purchase report, and now the buyer's solicitor is asking you for documents you don't have.
You're buying, and the vendor has no paperwork A renovated bathroom with nothing behind it. You want independent evidence of what's there before you exchange.
The certificate exists — but excludes a room A WC or ensuite crossed out on the certificate, an extension never certified, construction photos for some rooms but not others.
Strata wants evidence, after the fact A renovation bylaw needs waterproofing documentation for work that was finished years ago.
You just need to know what you've actually got Before you spend on the next renovation, or hand over the keys — an independent record of the evidence that still exists.

The questions people actually ask

Can waterproofing be certified after tiling?

No — not honestly, by anyone. A certificate of installation can only come from the licensed installer who did the work. If they're unavailable, that document cannot be recreated. What can be produced is an independent evidence report: what the records establish, what is observable at accessible points, and what remains unverifiable. Councils and certifiers routinely assess exactly this kind of alternative evidence — acceptance is always their call, and we say that plainly rather than promising otherwise.

Council wants a waterproofing certificate and I don't have one. What do I do?

Send us council's letter first — there's no charge to review it. The letter's exact wording determines what evidence will actually help your application. We then quote a fixed fee for an inspection and report shaped to that request.

What can you actually establish on an already-tiled room?

Observable evidence: material at accessible drains and penetrations, finished-surface falls, junction and seal condition, moisture indicators, subfloor observations where there's access — plus a proper review of whatever records exist: certificates, construction photos and their dates, plans. And, stated honestly: a concealed membrane's extent and continuity cannot be verified without opening up. Our reports say what cannot be known. That's exactly why the parts they can establish carry weight.

What if council or the certifier wants more than a visual inspection?

The report sets out the options: limited targeted opening by your trades, which we document before, during and after — or a plumber-conducted wet test, which we observe and record. We don't conduct tests ourselves; that separation is what keeps the record independent.

What does it cost?

Fixed fee, quoted after we review your documents — typically from $850 + GST for a records review, site inspection and report. You'll know the exact number before we attend, and it doesn't change on site.

Documents first — so the quote is real

1

Send your documents

The council or certifier letter, any certificates, construction photos, plans — whatever exists. We review everything before quoting, at no charge.

2

Fixed-fee quote

Scope, fee and timing in writing — including exactly what the report can and cannot do for your situation. No surprises, no upselling.

3

Site inspection

The rooms in question, documented thoroughly — drains, junctions, falls, moisture indicators, subfloor where accessible. About an hour on site.

4

Report within two business days

Evidence presented room by room, records separated from observations, limitations stated, and the next options set out if more is needed.

Existing Wet-Area Evidence Report

from $850 + GST
Fixed fee confirmed after document review — before we attend
  • Review of council/certifier correspondence, certificates, photos and plans
  • Site inspection of the rooms in question
  • Room-by-room evidence report — records and observations kept separate
  • What cannot be verified, stated plainly (that's what makes it credible)
  • Options for further verification if the assessing body wants more

Renovating and not yet tiled? That's a different (and cheaper) moment — see the Pre-Tile Inspection: record it before it's covered.

Independent, bounded, honest

We have no stake in the work

We didn't do the waterproofing, we don't sell the repair, and we don't certify the work. Our only product is the independent record.

Records and observations, never blended

What a certificate claims and what we saw on site are kept strictly separate in the report — so the reader always knows which kind of evidence they're weighing.

Limitations in writing

Every report states what could not be verified and routes judgement to the parties whose call it is. That's precisely what makes it usable in front of a council, certifier or solicitor.

Tell us the situation

We'll reply within one business day — usually with a request for your documents, then a fixed-fee quote. Nothing is charged until a quote is accepted.

Prefer to talk it through first? Call Kevin on 0499 288 304