Bathroom renovations are often underestimated. Despite their size, they are among the most technically complex areas of a home renovation, involving multiple licensed trades, regulated work, and precise sequencing. This complexity is amplified in older homes and apartments, where existing conditions, building constraints, and compliance requirements require careful coordination and informed decision-making.
As established interior designers working across the residential sector since 2013, with a strong focus on heritage homes and apartment renovations, we see the same issues arise time and again. When key foundations such as documentation, clarity of scope, and regulatory understanding aren’t in place, projects are far more likely to become stressful, unclear, or unnecessarily costly. Understanding what protects homeowners, supports compliant work, and sets a renovation up for success from the outset is essential to achieving a well-considered outcome.
A written scope of works is the foundation of any renovation. It defines what is included, what is excluded, and who is responsible for each element of the project. Without a clearly agreed scope, expectations can quickly become misaligned and accountability blurred.
A scope of works is not administrative paperwork. It is protection. It ensures decisions are documented, responsibilities are clear, and changes are managed transparently. If your engaged trade is refusing to issue one, taking too long, do not proceed any further.
Before any renovation begins, homeowners should have the fundamentals in place:
a signed contract
a clear payment schedule
an agreed scope of works
realistic allowances and inclusions
an indicative program of works
These documents provide structure and clarity. They are not “formalities”, they are what keep a renovation grounded, especially when questions or changes arise.
Australian Consumer Law protects homeowners regardless of how a project is paid for. What matters is evidence of agreement and service, not the payment method. Documentation is what creates that evidence. Paper trail, sms, emails, bank balance withdrawls of cash, transfer, photo evidence etc.
Time pressure can shift the dynamic of a renovation. When urgency overrides planning, documentation, and communication, mistakes and misunderstandings become more likely.
Clarifications may be treated as inconveniences. Decisions may be rushed. Accountability can quietly slip. A tight timeline should never be used to bypass process or discourage questions. If anything, it makes clarity more important, not less. Never accept if a trade is making you feel like you are wasting their time, it is up to the engaged trade to lead the project, including a clear timeline outlining what is happening, who is coming to do what task, and when this is happening.
In bathrooms, especially within older buildings, early decisions such as tile set-outs, plumbing locations, and junction details are critical. These moments determine both the function and finish of the space.
Where appropriate, homeowner or designer involvement in these discussions helps ensure decisions are aligned, documented, and understood by all parties. Exclusion from key decisions often leads to confusion later, when outcomes don’t align with expectations and often unnecessary blame from the trade. You are allowed to be in these meetings. For us, it is a non-negotiable.
Renovations benefit from clear oversight and coordination. When there is limited site presence by the Project Manager or unclear responsibility, homeowners can find themselves managing issues they should never have to handle, and this is just not acceptable.
Older homes require more attention, not less. Walls are rarely square, services are often outdated, and assumptions can lead to avoidable problems. A lack of coordination creates a chain reaction of issues that are far easier to prevent than resolve. Never allow a trade or PM to make you feel like you are wasting their time or “stupid” when asking simple questions that deserve simple answers. Afterall, it is your home, your bathroom.
Allowances that are set unrealistically low can make quotes appear attractive upfront and this can be a classic tactic some trades use to win the job. The reality often surfaces later, once compliant products, appropriate materials, or suitable suppliers are specified. Clear, realistic allowances help homeowners understand the true cost of a project early and avoid uncomfortable adjustments mid-build.
Clear communication is fundamental to a successful renovation. Homeowners should feel comfortable asking questions and receiving clear, respectful explanations in return. Dismissive responses, emoji and gaslighting tactics with vague answers, or reluctance to explain decisions are signs that something is off. Professional experience shows in transparency, not defensiveness and this reigns true time and time again.
As established interior designers working across the residential sector since 2013, with a strong focus on renovating heritage homes and apartments, we regularly navigate the regulatory and compliance requirements that underpin a successful bathroom renovation.
One of the most misunderstood aspects of this process is certification, particularly in older homes and apartment buildings.
Where new regulated plumbing work is undertaken, a Certificate of Compliance (CoC) is required under Victorian regulations. This applies regardless of the age of the building. The certificate relates specifically to the work completed, not to the entire history or condition of the property.
Homeowners renovating older apartments are often told variations of the same explanations:
“Because the building is old, this can’t be certified.”
“I need to check the pressure before I can issue one.”
“The existing pipework makes it tricky, so no certificate is needed.”
“We don’t give CoCs for old apartments.”
“I’ll sort it out later.”
It’s important to understand that the age or complexity of a building does not exempt licensed trades from their legal obligations. If regulated plumbing work has been carried out, a Certificate of Compliance must be issued. Statements suggesting a certificate “can’t be provided” due to age, existing conditions, or technical complexity should be clarified immediately.
A Certificate of Compliance is not a favour, an optional extra, or something to be negotiated later. It is a formal record confirming that work has been carried out by a licensed practitioner and completed in accordance with current standards. It also provides homeowners with essential protection should issues arise in the future.
Homeowners should also ensure they:
obtain the full details of all licensed trades engaged on their project, particularly where trades have been sub-contracted by a head contractor or trade managing the works
confirm licences and registrations before work begins
retain copies of all compliance documentation as part of their renovation records
In Victoria, licensing and compliance requirements are governed by the Building and Plumbing Commission (formerly the VBA). Homeowners can verify licences, registrations, and compliance obligations directly via the Commission’s website and should do so as part of their due diligence:
https://www.vic.gov.au/building-and-plumbing-commission
Understanding certification requirements and verifying trade credentials helps ensure work is compliant, accountable, and appropriately documented. It removes ambiguity, protects homeowners long after the renovation is complete, and supports a renovation process built on transparency and trust.
A formal handover is standard practice at the completion of a renovation. It provides an opportunity to confirm that the agreed scope has been delivered, documentation has been provided, and any outstanding items are clearly identified.
A handover typically includes:
confirmation of completed works against the agreed scope
provision of relevant Certificates of Compliance
warranties and product information
clarification of maintenance requirements
identification of any minor defects or adjustments to be addressed
This process benefits everyone involved. It creates a clear point of completion, ensures documentation is properly issued, and allows questions to be resolved before a project is considered final.
Homeowners should feel comfortable requesting a handover meeting as part of their renovation. It is not an unreasonable expectation. It is a professional standard that supports transparency, accountability, and a well-finished outcome.
An interior designer’s role extends far beyond aesthetics. We help structure the renovation process, coordinate documentation, advocate for clarity, and identify potential issues early.
By guiding decisions, reviewing details, and working alongside qualified trades, we help ensure renovations remain transparent, compliant, and well-considered, long before problems have the opportunity to arise.
Renovating a home is an investment of time, money, and trust. Homeowners are entitled to:
clear scopes and documentation
realistic allowances
professional communication
transparent processes
respect for their home and questions
If something feels unclear or uncomfortable, it’s worth pausing and reassessing. Renovations should feel collaborative and informed, not confusing or dismissive.
With the right foundations in place, clarity replaces uncertainty and confidence replaces doubt. That is the experience every homeowner should expect and thankfully, there are escalation procedures with the Building and Plumbing Commission.
