Correct Order to Renovate a House: Step-by-Step Guide 2026

Why Renovation Sequence Matters

Most renovation disasters are not caused by bad tradespeople. They are caused by the wrong trade being called in at the wrong time.

Paint a wall before the electrician finishes the rough-in, and you will open that wall again. Lay timber floors before the wet areas are waterproofed, and moisture will buckle them from below. The sequence is not a preference. It is an engineering logic built into how a building actually works.

In the September quarter of 2023 alone, Australians spent more than $3 billion on alterations and additions to their homes, according to Budget Direct’s 2024 Home Renovation Survey, sourced from ABS data. A significant portion of that spend goes toward fixing work that was done in the wrong order the first time.

This guide gives you the correct sequence, the reason behind every step, and the specific mistakes that derail renovations at each stage.

Step 1: Plan, Budget, and Get Permits

Nothing gets touched until this is done. Your plan defines the scope. Your scope defines which permits you need. Your permits define which trades can legally work on the project.

In Australia, most structural alterations, plumbing extensions, and electrical work above a defined threshold require a Development Approval (DA) or a Complying Development Certificate (CDC), depending on your state and council. Starting physical work before approvals are in place can result in orders to undo completed work at your own cost.

Your budget at this stage should include a minimum 15% contingency. If the property is older than 30 years, make that 20%. Hidden defects, asbestos, and substandard previous work show up during demolition, not during planning. Your contingency buffer should start at 15%, and if you are working from a renovation checklist for older homes, bump that to 20% to account for non-compliant materials and concealed defects.

What to lock in before any physical work starts:

• Detailed scope and design drawings
• Council permits or certifications
• Contractor quotes with clear scope definitions
• A provisional sum for unknowns

Step 2: Demolition and Strip-Out

Once permits are issued, demolition comes first. You strip back to the structure so you can see exactly what you are working with.

This is where hidden problems surface: rotted framing, termite damage, asbestos sheeting, undersized electrical wiring, or cracked drainage pipes. Finding these now is good news. Finding them after you have installed a new kitchen is expensive news.

All demolition waste must be sorted and disposed of correctly. If your home was built before 1990, assume asbestos is present until testing confirms otherwise. Licensed asbestos removal is not optional.

Step 3: Structural Repairs and Framing

Structural and foundational elements of the house must be addressed before cosmetic work. Waterproofing, drains, electrical, pest control, and HVAC are all elements that need to be sorted before anything visible.

Framing changes happen here. If you are removing walls, adding windows, or changing the roofline, those structural modifications go in now, before any services are run through the new framing. A structural engineer must sign off on any load-bearing changes. The structural inspection at this stage should also cover the roof, since cracked or broken roof tiles allow water ingress that will undermine freshly lined walls and ceilings within a single wet season.

Check the subfloor at this stage. Replace any damaged joists or bearers before proceeding. Pest treatment should also happen at this point so barriers and chemicals can be installed into the structure, not around it.

If your property is heritage-listed or constructed before 1960, this stage is more complex. Original framing is often undersized by current standards, materials may be non-compliant or protected, and heritage overlay conditions may restrict what can be altered or replaced. A specialist contractor like Heritage Restorations & Renovations understands the difference between what the council will approve and what a general builder will attempt. Getting the wrong advice here can result in orders to restore the original fabric at your cost.

Step 4: Rough-In Electrical, Plumbing, and HVAC

This is the single most important sequencing decision in the entire renovation. Rough-in refers to running all pipes, conduit, cables, and ducting through the wall and ceiling cavities before they are closed up.

Plumbing, electrical, and HVAC work must be completed before insulation and plasterboard are installed. Ensuring all pipes, wires, and ducts are properly installed and tested means there is no need to reopen walls or ceilings later.

In Australia, electrical rough-in must be carried out by a licensed electrician. Plumbing rough-in must be carried out by a licensed plumber. Do not let a builder or handyman run either. Beyond being illegal, it will not pass inspection, and it will not be covered by insurance.

What rough-in includes:

• Power and data cables run to the final switch and outlet positions
• New drain lines and water supply pipes to wet area locations
• Heating and cooling ducts or refrigerant lines
• Exhaust fan and ventilation ducting
• Gas lines if applicable

All rough-in work must be inspected and approved before walls are closed. This is non-negotiable.

Step 5: Insulation

Insulation goes in after the rough-in is approved and before the plasterboard. This sequence locks in your thermal and acoustic performance for the life of the building.

Install insulation in external walls, internal walls between living and bedroom zones, and ceiling cavities. Bulk insulation (batts) is the standard for walls. Ceiling insulation should meet the minimum R-value requirements for your climate zone under the NCC (National Construction Code).

Do not compress insulation batts to fit around cables. A compressed batt loses a significant portion of its R-value. The electrician and the insulation installer need to coordinate.

Step 6: Plasterboard and Internal Lining

Once insulation is in and all rough-in inspections are passed, walls and ceilings are lined. Plasterboard (gyprock) goes up, and the rooms start to take visible shape for the first time.

In wet areas such as bathrooms, laundries, and behind kitchen splashbacks, moisture-resistant plasterboard or fibre cement sheet is required. Standard plasterboard in a wet area will delaminate within a few years.

After sheeting, the plastering process begins: cornice, corner bead, stopping compounds, and sanding. This takes time to dry between coats. Rushing the plaster stage produces a visible, lumpy result that cannot be hidden with paint.

Step 7: Waterproofing and Tiling Substrate in Wet Areas

Before any tiles go down in wet areas, waterproofing membranes must be applied to floors and walls. In Australia, wet area waterproofing is a mandatory regulated requirement under the NCC. It must be applied by a licensed waterproofer or, in some states, a licensed tiler with waterproofing endorsement.

Waterproofing membranes need a specific number of coats and a curing period before tiling can begin. The most common renovation defect in Australian homes is failed wet area waterproofing. It is also one of the most expensive to fix because rectification requires removing all tiles.

Do not let this step get rushed to suit a schedule.

Step 8: Internal Joinery, Kitchens, and Cabinetry

Kitchen and bathroom cabinetry, built-in wardrobes, and all fixed joinery go in at this stage. The walls are lined and primed. Floors are not yet at their final finish, which protects them from installation damage.

Cabinetry positions must align with the rough-in locations set in Step 4. If a cabinet maker’s plans do not match the plumber’s rough-in positions, one of them will need to move. That conversation needs to happen before installation, not after.

Stone benchtops, if specified, are templated after cabinets are installed and fabricated off-site. Allow 10-15 business days lead time. Do not schedule splashback or fixture installation until benchtops are confirmed.

Step 9: Painting

Painting happens after cabinetry is installed but before tiles, before final electrical and plumbing fixtures, and before floor finishes. This protects all subsequent work from paint drips and overspray.

Two coats of undercoat followed by two coats of topcoat is the standard for a quality residential result. Cutting corners to a single coat produces a finish that shows every imperfection in the plaster beneath.

Doors and architraves should be painted off the door before hanging, where possible. It is faster and produces cleaner lines.

Step 10: Tiling

With painting complete, tiling begins. Wet area floor and wall tiles go in now, including shower floors, bathroom floors, and kitchen splashbacks.

Tile layout planning must happen before the first tile is cut. The starting point determines where cuts land, and cuts at doorways or in prominent sight lines look unprofessional. Take the time to dry-lay the pattern before committing to adhesive.

Grout is applied after the adhesive has fully cured, typically 24 hours for standard adhesive. Grouting too early causes the adhesive to crack under the grout, which produces movement and cracking at the grout joints within months.

Step 11: Final Fix Electrical, Plumbing, and HVAC

This is where the rough-in cabling and pipework get connected to visible fixtures. Powerpoints, switches, light fittings, tapware, toilets, basins, shower heads, rangehoods, and air conditioning units are all installed now.

Final fix comes after painting and tiling because these fixtures must not be painted over or scratched during tile installation. The licensed electrician and plumber return at this stage to complete their scope and issue Certificates of Compliance for their respective trades. Retain these documents. You will need them for insurance, sale, and council sign-off.

Step 12: Floor Finishes (Final Lay or Polish)

Hard floor finishes go in last among the major trades. Timber boards, vinyl planks, or polished concrete are installed after all other trades have finished, moving heavy materials and equipment through the space.

If you have a concrete slab, this is when polishing or grinding occurs. If you are laying timber or engineered boards, the moisture content of the subfloor must be tested before installation. Timber flooring laid over a high-moisture subfloor will cup, bow, and separate within months.

Carpet is the final floor finish in any sequence. It is the most vulnerable to damage from foot traffic and trade activity, so it comes in last.

Step 13: Final Finishes and Snagging

The snagging stage is a systematic walkthrough of every room to identify incomplete or substandard work. Do this before the final payment is made to any contractor.

Check for unfinished areas, paint imperfections, or hardware issues. Test all fixtures and appliances to confirm they function correctly. Check for proper lighting and overall aesthetics. Do not rush this stage because the motivation to return and fix small defects drops significantly once the final payment has been made.

Photograph every defect with a timestamp. Send the snag list in writing. Give a clear deadline for rectification.

What Happens When You Get the Order Wrong

The consequences of sequencing errors are specific and expensive. This table shows the most common out-of-order mistakes and what they cost.

Wrong Sequence	What Goes Wrong	Consequence
Tiles before waterproofing	Membrane cannot be applied to a tiled surface	All tiles must be removed, membrane applied, retiled
Paint before rough-in complete	Electrical/plumbing rough-in opens painted walls	Full repaint of affected areas
Flooring before cabinetry	Cabinets scratch and compress floor finish during install	Floor damage, potential replacement
Cabinetry before plaster dried	Moisture in uncured plaster warps cabinet backs	Cabinet replacement
Plasterboard before rough-in inspection	Walls must be re-opened for inspection to occur	Demolished plasterboard, cost of rework
Insulation after plasterboard	Cannot achieve required R-values without opening walls	Wall demolition and redo
Final fix before tiling	Tapware and switches damaged during tile installation	Replacement of fixtures

Renovation Sequence: Full-House vs. Room-by-Room

A full-house renovation follows the sequence above from start to finish as one coordinated project. A room-by-room renovation follows the same sequence, but is scoped to a single area at a time.

Room-by-room renovations are slower and often more expensive per square metre because trades make multiple return visits rather than completing a single run-through. However, they allow you to continue living in the property during the renovation, which reduces temporary accommodation costs.

If your renovation will span multiple seasons or be scheduled during unpredictable weather months, address the building’s exterior envelope early. A sound exterior protects everything inside. This applies to both full-house and staged projects.

The one rule that applies regardless of scope: do not begin cosmetic finishes in any room until all structural and rough-in work that touches that room is fully signed off.

To Conclusion

The correct order to renovate a house follows a strict logic: structure before services, services before lining, lining before finishes, finishes before fixtures. Every step in this guide exists because skipping it or reordering it creates rework, and rework is the primary reason renovation budgets blow out. Follow this sequence, lock in your permits before you lift a hammer, and treat the snagging stage as seriously as the build itself.