# ModVault > Every mod. Certified. Proven. Roadside-ready. ModVault is an Australian web and mobile app that keeps every vehicle modification certified, proven and roadside-ready — engineering certificates, receipts, service history and compliance records in one tamper-evident vault. ModVault is built for Australian conditions and Australian regulation. Vehicle modification certification in Australia is administered state by state: NSW runs VSCCS, Victoria runs VASS, Queensland uses modification plates under the QCOP, and so on. National guidance comes from Vehicle Standards Bulletin 14 (VSB14), but each jurisdiction applies it differently and recognition across borders is inconsistent. The guides below document each scheme. The content in this file is general information for vehicle owners. It is not legal or engineering advice. Requirements change and are applied at the discretion of state authorities. ## State and territory certification schemes - [NSW — Vehicle Safety Compliance Certification Scheme](https://modvault.com.au/guides/nsw-vsccs-engineering-certificate/index.md): In NSW, significantly modified vehicles must be certified under VSCCS by a licensed certifier before the registration record is updated. A VSCCS compliance certificate does not expire, but the AUVIS (blue slip) inspection that often accompanies it is valid for only 42 days. - [VIC — Vehicle Assessment Signatory Scheme](https://modvault.com.au/guides/vic-vass-certificate/index.md): A VASS certificate is issued by a VASS signatory in Victoria for modified, imported or individually constructed vehicles. For light vehicles the certificate expires 30 days from issue, so it must be lodged promptly, and a blue modification plate is fitted to the vehicle on certification. - [QLD — Queensland Approved Person Scheme](https://modvault.com.au/guides/qld-modification-plate/index.md): Queensland certifies modified vehicles through Approved Persons, who inspect the work against the Queensland Code of Practice (which adopts VSB14) and rivet a modification plate to the vehicle. Queensland does not automatically recognise certification issued in other states. - [SA — Recognised Engineering Signatory (RES) scheme](https://modvault.com.au/guides/sa-engineering-certificate/index.md): South Australia certifies modified light vehicles through recognised engineering signatories, who assess the work against VSB14 and South Australian requirements and lodge an engineering report with the Department for Infrastructure and Transport. SA generally accepts Victorian VASS certificates. - [WA — Department of Transport vehicle examination and approval](https://modvault.com.au/guides/wa-modified-vehicle-approval/index.md): Western Australia approves modified vehicles through its own Department of Transport process, typically involving an automotive consultant and a vehicle examination. Interstate engineering certificates do not remove the need for WA's own approval. - [TAS — Approved Vehicle Certifier / Approved Inspection Station scheme](https://modvault.com.au/guides/tas-approved-vehicle-certifier/index.md): Tasmania certifies modified vehicles through Approved Vehicle Certifiers operating within authorised inspection stations, assessing against VSB14. Tasmania generally accepts Victorian VASS certificates. - [NT — Recognised engineers, Motor Vehicle Registry](https://modvault.com.au/guides/nt-modified-vehicle-engineer/index.md): The Northern Territory recognises approved engineers to certify modified vehicles, with the report lodged to the Motor Vehicle Registry. The NT usually recognises interstate certification from an engineer approved in their home jurisdiction. - [ACT — Recognised engineering signatory scheme](https://modvault.com.au/guides/act-engineering-signatory/index.md): The ACT uses recognised engineering signatories to certify modified vehicles against VSB14 and ACT-specific requirements, and accepts signatories approved in other states and territories. ## Topic guides - [Does My Mod Need Engineering? Australian Checklist](https://modvault.com.au/guides/does-my-mod-need-engineering/index.md): In Australia, a modification needs certification when it is a 'significant' modification under VSB14 or your state's code — engine swaps, forced induction, aftermarket braking components, seats and restraints, and suspension beyond ride-height limits. Basic bolt-on changes within manufacturer and ADR limits usually do not. - [VSB14 Explained](https://modvault.com.au/guides/vsb14-explained/index.md): Vehicle Standards Bulletin 14 (VSB14) is the national code of practice for light vehicle modifications in Australia. It is not law by itself — each state and territory adopts it through its own scheme, such as VSCCS in NSW, VASS in Victoria and the Code of Practice in Queensland. - [Blue Slip NSW (AUVIS)](https://modvault.com.au/guides/blue-slip-nsw/index.md): A NSW blue slip (AUVIS inspection) is required when registration has lapsed three months or more, the vehicle comes from interstate or overseas, it has no plates, or it is an approved written-off vehicle being re-registered. The report is valid for 42 days from inspection. - [Got a Defect Notice? What To Do Next (Australia)](https://modvault.com.au/guides/defect-notice-what-to-do/index.md): A defect notice requires you to rectify the listed items and have the vehicle cleared before it can be legally driven as normal. Minor (yellow) notices usually allow restricted use pending clearance; major (red) notices generally do not. Producing engineering certificates and receipts on the spot is often what prevents a notice being issued at all. - [Modified Car Insurance Australia](https://modvault.com.au/guides/modified-car-insurance-australia/index.md): Australian insurers require modifications to be disclosed, and can reduce or refuse a claim where undisclosed modifications are found. Engineering certificates, parts receipts and dated build photographs are the evidence that supports both disclosure and an agreed-value valuation. - [Interstate Engineering Certificates](https://modvault.com.au/guides/interstate-engineering-certificate-recognition/index.md): Recognition of engineering certification varies by jurisdiction. Victorian VASS certificates are generally accepted in SA, TAS, NT and the ACT, but not automatically in NSW or Queensland. WA requires its own approval process regardless. Always confirm with the destination authority before registering. - [Roadside Compliance Pack](https://modvault.com.au/guides/roadside-compliance-pack/index.md): Have your registration details, engineering certificates or modification plate references, the certifier's name and scheme, and receipts for major parts available in one place. Being able to produce this in under a minute is frequently what prevents a defect notice on a legally modified car. ## Who ModVault is for - [Your build's paper trail, roadside-ready](https://modvault.com.au/for/modified-cars/index.md): ModVault stores every modification, engineering certificate, receipt and service record for your modified car in one tamper-evident vault — and produces the whole compliance pack in one tap when you are pulled over. - [Provenance, preserved — for the cars that outlive us](https://modvault.com.au/for/classic-and-heritage-cars/index.md): ModVault's heritage experience presents your vehicle's records as a provenance archive: restoration receipts, service history, period photographs and certificates, organised chronologically and preserved beyond the life of any shoebox or shed. - [4WD and touring builds: payload, plates and proof](https://modvault.com.au/for/4wd-and-touring/index.md): Touring 4WD builds accumulate GVM upgrades, suspension lifts, bar work and accessories — most of which affect legality, payload and insurance. ModVault records each modification with its certification status and keeps the evidence producible when it counts. - [Run your club without the spreadsheet and the group chat](https://modvault.com.au/for/car-clubs/index.md): ModVault gives Australian car clubs a private, invitation-only space for member registers, events and communications, with rego-verified membership and no public exposure of member vehicles. - [Digital sign-off for licensed certifiers and signatories](https://modvault.com.au/for/certifiers-and-engineers/index.md): Certifiers can review and countersign modifications in ModVault using a 6-digit handover code or a shareable signing link, without creating an account. The result is a hashed, tamper-evident certificate record tied to the vehicle and the evidence. ## Comparisons - [Spreadsheet vs build record: where the sheet breaks](https://modvault.com.au/compare/modvault-vs-spreadsheet/index.md): A spreadsheet tracks what you spent. It cannot hold the receipts, the staged photographs, a certifier's countersignature, or a tamper-evident audit trail — which are the four things anyone assessing your car actually asks for. - [The glovebox folder: what it does well, and how it fails](https://modvault.com.au/compare/modvault-vs-glovebox-folder/index.md): A paper folder is instantly producible and needs no battery, but it is a single point of failure — one theft, fire, flood or forgotten transfer at sale and decades of provenance is gone. A digital vault keeps the instant access and removes the single point of failure. ## Product - Pricing: Garage $4.99/mo (1 vehicle), Workshop $9.99/mo (3 vehicles, exports), Collection $19.99/mo (unlimited vehicles, club tools). All plans include a 7-day free trial. - Platform: progressive web app, installable on iOS and Android. - Key capability: certifiers digitally sign off work in-app via a handover code, producing a hashed, verifiable certificate record. - App: https://modvault.com.au/ ## Optional - [Full corpus in one file](https://modvault.com.au/llms-full.txt): every guide inlined, for single-request ingestion. - [Sitemap](https://modvault.com.au/sitemap.xml)