Renovation Timeline: How Long Does a Renovation Take?

Every renovation moves through two broad stages: planning, which runs from design through to procurement, and construction. The planning stage regularly takes longer than homeowners expect. Cutting it short is the single biggest cause of blowouts during the build. Here are the windows we programme for each project type.

How long does a bathroom renovation take?

A standard bathroom renovation takes 3 to 6 weeks of construction, covering demolition, waterproofing, plumbing rough-in, tiling, cabinetry installation, and final fit-off. A straightforward layout swap with no structural changes sits at the shorter end of that range. Relocating plumbing fixtures or combining two rooms pushes the job toward the longer end. Planning adds 2 to 4 weeks before construction starts, which covers tile and tapware selection. Our clients purchase their own tiles and PC (prime cost) items directly, with no builder markups, so supplier lead times need to be built into that window. We have completed more than 1,000 bathroom renovations across Sydney’s south, and the programme rarely moves once materials are on site.

What adds time to a bathroom project?

Waterproofing membrane curing, custom shower screen manufacturing, and unexpected plumbing issues behind walls add the most time to a bathroom project. Waterproofing needs a curing period before tiling starts. No tiler steps in until it has set. Older fibro and brick homes across Engadine, Gymea, and Jannali carry a higher chance of hidden asbestos or deteriorated framing, which adds 3 to 5 days once uncovered.

How long does a kitchen renovation take?

Kitchen renovations run 6 to 10 weeks from demolition to completion. Kitchens involve more trades than bathrooms: electricians, plumbers, cabinetmakers, stone templaters, tilers, and painters all sequence one after the other, and one missed handover stalls the lot. Custom cabinetry manufacturing takes 4 to 6 weeks on its own, which is why we order joinery during the planning phase so it arrives before demolition day. A kitchen in a newer home with no wall removals lands near the shorter end of the range. Opening up walls for an open-plan living area brings structural engineering, beam installation, and council inspections into the programme, and the timeline stretches toward the top of the range.

How long does a full home renovation take?

A full home renovation takes 3 to 6 months, driven by the number of rooms and the extent of structural change. We stage work so trades flow from one zone to the next rather than waiting idle, and we have completed hundreds of full home renovations on this model. For a 3-bedroom home in suburbs such as Caringbah or Bexley, a full internal renovation covering the kitchen, bathroom, laundry, flooring, and painting finishes in 12 to 14 weeks without structural work. Add structural modifications or a new deck and the programme moves into the 5 to 6 month range. Our guide on home renovation costs breaks down where the budget goes at each stage.

How long does a home extension take?

Home extensions take 4 to 8 months from site preparation to handover. The build covers footings, slab or subfloor framing, wall framing, roofing, and a full internal fit-out. A single-room ground floor addition sits at the shorter end, while a second storey addition with structural strengthening of the existing home runs to 7 or 8 months. Every extension needs development approval before work starts, through either a complying development certificate or a full development application, and our DA approval service manages that pathway from lodgement to determination. The approval route you qualify for sets your pre-construction timeline, and the approvals section below covers what each pathway adds.

How long does a knockdown rebuild take?

A knockdown rebuild takes 10 to 14 months from demolition of the existing dwelling to move-in. Demolition runs 1 to 2 weeks, followed by site clearing, then 3 to 4 weeks for the new slab and footings, another 3 to 4 weeks of framing, 4 to 6 weeks to reach lock-up stage, and 8 to 12 weeks of internal fit-out through to completion. The planning workload in front of all this is substantial. Design development, structural engineering, a BASIX certificate, and council approval add 3 to 6 months before physical work begins. Understanding the full home building process before committing sets accurate expectations for the whole programme.

What affects a renovation timeline?

Five factors set how long your renovation takes: approval requirements, weather, material lead times, trade availability, and scope changes. The first two sit largely outside anyone’s control, so a good builder programmes around them. The last three are managed decisions, which is where the difference between builders shows up. Here is how each one plays out on a real programme.

How do approvals affect the timeline?

Council and certifier approvals add anywhere from 3 weeks to 4 months before construction starts. Minor cosmetic work such as painting, new flooring, or a same-position kitchen replacement needs no approval at all. Structural changes and extensions need either a complying development certificate (CDC) or a development application (DA). The NSW Planning Portal states complying development approvals “can be issued in as little as 20 days”, while the average DA determination time across the state is 70 days according to NSW Government planning guidance, and busy councils run longer. We guide clients into the right pathway early, and our breakdown of the council approval process covers which one fits your project.

How does weather affect construction?

Rain is the main weather-related cause of delays, and it hits slab pours and roofing hardest, with excavation close behind. Internal renovations barely notice weather once the building envelope is sealed. For extensions and knockdown rebuilds, we schedule external trades with seasonal rainfall in mind and hold wet-weather buffer days in the programme.

How do material lead times cause delays?

Custom-manufactured items carry the longest lead times: stone benchtops and structural steel run 6 to 8 weeks from order to delivery, and custom joinery sits in a similar bracket. Standard tiles and fixtures from major suppliers arrive within 1 to 2 weeks, while imported and specialty products take longer. We lock in material orders during the planning phase so everything is delivered before construction needs it. This single practice removes one of the most common causes of idle time on building sites.

How does trade availability affect scheduling?

Each trade depends on the one before it finishing on time, so an unavailable plumber or tiler stalls the entire project. We book trusted subcontractors into our programme weeks in advance. As a family-owned business with long-standing trade relationships, our teams prioritise Dura Group projects and turn up when scheduled.

What happens when the scope changes mid-project?

Scope changes during construction are the most controllable cause of delays, and the one homeowners hold the most power to prevent. Relocating a door or upgrading from a shower to a freestanding bath mid-build means revised engineering, new materials, rescheduled trades, and sometimes fresh council approval. We ask clients to finalise every detail during the planning phase. Our lump sum pricing makes this easier because the full cost is known upfront, which removes the temptation to sort it out later.

Inside the planning phase

The planning phase covers initial consultation, site inspection, design development, engineering, approvals, material selection, and trade scheduling, and it takes 4 to 12 weeks depending on project complexity. Here is how it breaks down:

• Initial consultation and site inspection (week 1): We assess the existing structure and identify constraints, then talk through your goals. Our guide to a site inspection covers how to prepare.
• Design development (weeks 2 to 4): Floor plans, elevations, and 3D renders take shape. Deciding between a design and build approach or separate architect and builder matters most at this stage.
• Engineering and approvals (weeks 3 to 10): Structural engineering, energy assessments, and council submissions run in parallel with design finalisation.
• Material procurement and trade booking (weeks 4 to 8): Cabinetry, stone, structural steel, windows, and specialty items go on order, and trades lock into the programme.

By the time we break ground, every material is on order or on site and every trade knows their start date. This front-loaded planning is how we deliver projects on time.

The construction phase, week by week

Construction follows a set sequence: demolition, structural work, rough-in services, linings, wet area preparation, fit-out, and finishing. For a typical full home renovation, the programme runs like this:

• Weeks 1 to 2: Demolition, strip-out, and waste removal, with site protection installed.
• Weeks 3 to 4: Structural modifications, covering wall removal, beam installation, and new openings.
• Weeks 5 to 6: Plumbing and electrical rough-in, with frames inspected.
• Weeks 7 to 8: Wall and ceiling linings, plus cornice installation.
• Weeks 9 to 10: Waterproofing, tiling, and cabinetry installation.
• Weeks 11 to 12: Painting, flooring, and second-fix plumbing and electrical.
• Weeks 13 to 14: Final fit-off of tapware, accessories, and lighting, then cleaning and handover.

Mark personally oversees each stage and reports progress to you weekly. You always know where the project stands and what comes next.

How does Dura Group manage renovation timelines?

We prevent delays by completing all procurement and scheduling before the first day of demolition. Materials come first: joinery, stone, steel, and other long-lead items go on order during planning so they arrive before construction needs them. Trades come next, with every subcontractor scheduled on confirmed dates, so there is no scrambling for an available tiler mid-build. Scope is fixed last. Our lump sum pricing means everything is decided, documented, and costed before work begins, Mark has spent more than 27 years in residential construction, and he limits the number of active Dura Group projects so every job gets his direct attention. Fewer idle days and tighter sequencing follow from that structure, and the finish date holds. Across projects in Caringbah, Bexley, Engadine, and the surrounding suburbs we consistently deliver within the programme we set at the start.

What causes the most common renovation delays?

Indecision during construction, late material orders, and overcommitted builders juggling too many projects at once cause most of the delays homeowners experience. Here are the top causes and how to avoid each one:

• Changing your mind after construction starts: Finalise every selection, tiles through to layout, before demolition day. Take the time during planning rather than rushing to site.
• A builder who orders materials late: Ask your builder when long-lead items go on order. An answer of “once we start” means gaps in the schedule.
• Too many projects running at once: Some builders spread themselves thin across simultaneous jobs, and every one of those sites competes for the same attention. Ask how many active sites a builder runs before signing.
• No contingency in the schedule: A realistic programme includes buffer days for inspections, curing times, and minor adjustments. Question any builder quoting an impossibly fast timeline.
• Skipping the site inspection: Hidden issues such as asbestos and non-compliant past work cause the worst delays when discovered mid-build. A thorough site inspection before quoting identifies these risks early.

How can you keep your renovation on schedule?

Homeowners who make selections early, respond to queries within 24 hours, and avoid scope changes after signing the contract experience the fewest delays. Practical steps you take now pay off across the whole build:

• Visit tile and bathroom showrooms before construction starts, not during.
• Decide on appliances early so cabinetry is designed to exact dimensions.
• Nominate one decision-maker in the household to avoid conflicting instructions.
• Set up temporary arrangements before any works that take your kitchen or bathroom offline for more than 2 weeks.
• Keep a 10 per cent time buffer in your own expectations, so a 12-week programme reads as 13 in your calendar.

A builder who provides a documented programme and consistent communication makes every one of these steps easier.

Common questions about renovation timelines

Do you have to move out during a renovation?

You stay in your home for most single-room projects, including bathroom and kitchen renovations, provided one bathroom or a temporary kitchen setup remains usable. Full home renovations that touch every wet area, and any knockdown rebuild, require temporary accommodation for the construction period. We stage multi-room projects so essential rooms stay functional for as long as the programme allows, and we tell you before contract signing exactly which weeks will be the most disruptive.

When is the best time of year to start a renovation?

The best time to start a renovation is the moment your planning is complete, not a particular season. Internal projects run year-round without weather exposure. External work such as extensions and roofing benefits from drier scheduling windows, and we build wet-weather buffer days into every external programme regardless of the start month. A rushed project started in perfect weather loses more time than a well-planned one started in winter.

How accurate are builder timeline estimates?

A timeline estimate holds when the scope is fixed, materials are ordered ahead of construction, and the programme carries contingency for inspections and curing. Estimates fail when any of those three are missing. Ask for a documented week-by-week programme before signing, then hold your builder to it. We put ours in writing because a date committed to in a document is a date the whole job gets planned around.

Ready to plan your renovation timeline?

Dura Group walks you through realistic timeframes for your specific project, wherever you are across Sydney’s south and inner suburbs. Explore our professional home renovation service, see local work through our builders in Caringbah, builders in Bexley, and Engadine builders pages, or get in touch for a free quote. Let’s create a space you’ll love coming home to.