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Who we are & what we expect
Gorilla Construction WA is a Perth building company delivering insurance repairs, residential renovations, commercial and government works — built on structure, accountability and professionalism. Every project carries our name, and every trade on our sites is held to the same standard: Measure twice. Build once.
Public liability insurance, workers comp (if applicable), valid trade licence, ABN and a signed acknowledgement — all lodged through this portal. No compliance, no site access.
Clean work areas daily, respect other trades' work and client property, protect finished surfaces, follow SWMS & PPE requirements. Damage or mess left behind is back-charged.
14-day terms, paid Thursdays. Invoice before Wednesday 2pm → paid two Thursdays later. Every invoice quotes a PO — No PO = No Payment — and completion photos are submitted before payment is processed.
Before, progress and completion photos on every job. Report delays, damage or scope changes immediately — variations only proceed with written approval.
Punctuality. Clear communication. Professional presentation and conduct on every site, in front of every client. Finishes delivered to Gorilla QC standard — we solve problems on paper first and nothing leaves our hands below standard.
✕ Drugs or alcohol on site ✕ Disrespect to clients, trades or the Gorilla team ✕ Damage to other trades' work or finishes ✕ Mess left behind ✕ Unapproved variations ✕ Hiding problems ✕ Defects & rework from poor workmanship ✕ Not keeping your word on your schedule ✕ Shortcuts on quality or safety
Breaches are back-charged and repeat breaches end the relationship.
Complete the steps below to register. Your details save as you go.
Payment terms are critical.
Wed, before 2pm → Processed
next week's run → 💰 PAID
Thursday, 2 weeks later
after Wed 2pm → Misses this run
waits for the next one → 💰 PAID
Thursday, 3 weeks later
Simple version: get your invoice in by Wednesday 2pm and you're paid on the Thursday two weeks later. Miss the cut-off and it rolls to the next cycle — a full week extra. Direct bank transfer only, and every invoice must quote a PO.
Photos of completed work must be attached to your invoice. Payment is only finalised once works are completed, documented and approved — no completion photos and documentation, no payment; it pushes to the following payment week. We do not reimburse materials; supply your own tools, equipment and insurance.
Updated site requirements.
Works damaged, left incomplete, undocumented, or sites left like rubbish tips — in most cases Gorilla Construction has had to absorb those costs. Moving forward, this will not continue. These requirements protect the project, the client, Gorilla Construction, and the subcontractors doing the right thing — and apply to all trades, suppliers and visitors on every Gorilla site.
Sites clean and tidy at all times — clean up your own mess daily or be back-charged $300. All rubbish, lunch waste, packaging and offcuts in the site bin or back-charged $300. Damage to another trade's work, finishes, waterproofing or property is back-charged. No boots or gear on finished surfaces. Reinstate fencing, silt barriers and protection before leaving. No unauthorised persons, clients or children on site without management approval.
Before: confirm the approved scope, flag access issues or existing damage, take clear before photos. During: daily progress photos + brief of works; never cover up works needing inspection; no additional works without written approval. On completion: completion photos, clean and compliant work area, notify the Supervisor for inspection, submit all certificates and handover documents.
Invoices must match the approved scope or PO. Damaged, incomplete, undocumented, defective or non-compliant works may see payment withheld, reduced or back-charged. A $220 back-charge applies where rubbish, fencing, silt barriers or site controls aren't managed by your team. Damage through lack of care or poor workmanship is back-charged.
We value our subcontractor relationships — but we need clean handovers, clear documentation and professional site conduct on every project. If this doesn't align with how you work, let us know and we can make arrangements. Please ensure your whole team is aware before attending any future works.
— Joshua Vassallo, Gorilla Construction WA Pty Ltd
Business Details
Insurances — certificates of currency required
Licences & Tickets
Upload your trade licence / registration and any relevant tickets — e.g. Trade Licence (electrical, plumbing, gas), High Risk Work Licence (EWP, dogging, forklift), White Card (required).
📋 Uploaded photos are checked by AI on submission — make sure the licence number, name and expiry are clearly readable.
Payment Details
Payments are processed against approved POs on our accounts schedule. Invoices must quote the PO number.
Subcontract Agreement (AS4901 — required before first job)
Sign the Gorilla Construction AS4901 Subcontract Agreement online — you sign first, it routes automatically to Joshua Vassallo (Director) for countersignature, and Adobe emails both parties the fully executed, audit-trailed copy. Takes a few minutes; no printing.
Page 1 — Cover: write your business name next to Subcontractor and your ABN in the ABN field.
Page 3 — Formal Instrument of Agreement: fill in the Date and your full entity name on the blank (Subcontractor) line under Parties.
Page 4 — Execution (the important one): use the second "Executed by…" block (the first is Gorilla's). Write your entity name after "Executed by", then sign in "Signature of director" and print your name in "Full name of director". If you have a second director or company secretary, they sign the right-hand column; a sole director signs the left column only. Sole traders: sign the director line in your own name.
Leave Gorilla's block (Joshua Vassallo) blank — we countersign after you submit. Signing online via Adobe places these fields for you automatically. You must sign this exact Gorilla document — your upload is checked, and substituted or altered contracts are rejected.
After signing, press "I've signed it" — Gorilla countersigns from the Adobe email and the executed copy is returned to you automatically.
Gorilla Construction WA Pty Ltd · Subcontractor Portal