How long does a home renovation take?

A complete apartment renovation commonly requires around 8 to 16 weeks of on-site construction, while a whole-house renovation may take 3 to 6 months or longer. The full project lasts longer when design, quotations, permits, contractor selection, and material procurement are included.

These ranges are only a starting point. A reliable duration must be calculated from the actual scope of work, the sequence of construction activities, lead times, and the decisions that remain open.

What does renovation duration include?

Renovation duration can refer to two different periods:

1. Construction duration: from site setup and demolition to final cleaning and handover.
2. Total project duration: from the first definition of requirements to completion.

Homeowners often hear an estimate of “three months” and assume the entire process will be finished within that period. In many cases, however, the contractor is referring only to the construction phase.

The total project may also include:

• Property survey and measurement
• Definition of requirements and scope
• Architectural or interior design
• Technical drawings
• Budget preparation and comparison
• Permit or notification procedures
• Contractor appointment
• Ordering of materials and equipment
• Construction
• Testing, snagging, and handover

A realistic programme must state which of these activities are included.

Typical renovation times by project type

The following ranges are practical planning references rather than guaranteed completion dates.

Cosmetic renovation

A cosmetic renovation may include painting, minor repairs, replacing visible fixtures, and installing simple floor finishes.

Indicative construction time: 2 to 6 weeks.

The project can take longer if the home remains occupied, if several rooms must be completed in sequence, or if flooring and joinery require special orders.

Partial renovation

A partial renovation normally affects one or more major spaces, such as a kitchen, bathroom, living area, or part of the building services.

Indicative construction time: 4 to 10 weeks.

Even a small bathroom can create a complex sequence: demolition, plumbing alterations, electrical work, waterproofing, screeds, tiling, curing, sanitary fittings, testing, and finishing.

Complete apartment renovation

A complete apartment renovation can include a new layout, demolition of partitions, replacement of electrical and plumbing installations, new bathrooms and kitchen, ceilings, flooring, doors, painting, and fixed furniture.

Indicative construction time: 8 to 16 weeks.

Some projects extend beyond this range because of structural changes, access restrictions, community rules, permit requirements, custom joinery, or delayed materials.

Complete house renovation

A house generally has more surface area and may include roofs, façades, external drainage, heating systems, insulation, windows, structural work, and outdoor areas.

Indicative construction time: 3 to 6 months or longer.

A heavy renovation involving structural intervention, major envelope work, or extensive technical installations should be planned as a more complex construction project rather than as a simple interior refurbishment.

House versus apartment: what changes?

An apartment is not automatically faster to renovate than a house.

Apartment projects may face:

• Restricted working hours
• Limited lift or stair access
• Rules for protecting common areas
• Controlled waste removal
• Neighbour and building-management coordination
• Restrictions on façades, windows, service risers, or structural elements
• Limited storage space for materials

A house usually offers easier access and more storage, but the scope is often broader. Roof repairs, exterior walls, landscaping, drainage, heating, and insulation can add both activities and weather-related dependencies.

The correct comparison is therefore not simply apartment versus house. It is scope, complexity, access, approvals, and procurement.

How much time does planning add?

Planning can require several weeks or several months, depending on the number of decisions and the technical complexity.

A typical pre-construction sequence includes:

1. Survey and requirements: confirming dimensions, existing conditions, priorities, and budget limits.
2. Concept design: defining layout, finishes, lighting, storage, and the intended level of intervention.
3. Technical definition: producing drawings and specifications that contractors can price and execute.
4. Budgeting and tender comparison: reviewing whether quotations cover the same work.
5. Approvals: completing any necessary municipal, building-management, or technical procedures.
6. Procurement: ordering materials with long or uncertain lead times.
7. Construction planning: assigning trades, dependencies, milestones, and site responsibilities.

Starting construction before these steps are sufficiently resolved does not necessarily save time. It often moves unfinished design work into the construction phase, where every late decision can interrupt labour and affect the budget.

What if the design and materials are already selected?

Having an approved design and selected materials can shorten the pre-construction period significantly, but only when the information is complete and buildable.

Before treating the project as ready to start, verify that:

• The final layout is approved.
• Demolition and construction drawings are coordinated.
• Electrical, plumbing, heating, ventilation, and lighting requirements are defined.
• Finishes have product references, formats, quantities, and installation details.
• Kitchen and fitted furniture dimensions are confirmed.
• Materials are available or have confirmed delivery dates.
• The contractor’s quotation matches the final design.
• Required approvals have been obtained.
• Changes are controlled through an agreed procedure.

“Materials selected” is not the same as “materials ordered and available.” A tile, appliance, window, worktop, or custom cabinet can still become a critical-path item if its delivery is not aligned with the programme.

What if the design and materials are not selected?

When design decisions remain open, allow additional time before construction. The risk is not limited to choosing colours or finishes.

Open decisions can affect:

• Electrical and plumbing routes
• Wall and ceiling construction
• Waterproofing details
• Floor build-ups
• Door openings
• Lighting points
• Kitchen connections
• Joinery measurements
• Labour quantities
• The final budget

For example, changing from a standard shower tray to a flush-level shower may alter drainage, waterproofing, screed levels, and tile installation. A decision that appears decorative can therefore affect several construction packages.

The safest approach is to create a decision schedule listing each pending choice, the deadline for approving it, the person responsible, and the activities that depend on it.

How to calculate a realistic renovation schedule

1. Define the scope by work package

Break the project into measurable packages such as:

• Site protection and temporary works
• Demolition and waste removal
• Masonry and partitions
• Structural work
• Plumbing
• Electrical installation
• Heating, ventilation, or air conditioning
• Waterproofing
• Plastering and ceilings
• Tiling
• Flooring
• Painting
• Windows and doors
• Kitchen installation
• Fixed furniture
• Testing and snagging

A schedule based only on rooms can hide dependencies between trades.

2. Identify dependencies

Activities must follow a technically valid sequence. Walls cannot be closed before concealed installations are inspected. Painting should not begin before wet trades have dried sufficiently. Worktops cannot be measured accurately before base units are installed and levelled.

The programme should distinguish between work that can overlap and work that must wait.

3. Add procurement lead times

Record the required-on-site date for each important material, not only the purchase date.

Pay particular attention to:

• Windows
• Custom doors
• Kitchen units
• Worktops
• Built-in furniture
• Sanitary fittings
• Special tiles
• Lighting
• Heating or cooling equipment
• Imported products

4. Include approvals and inspections

Permit times and administrative requirements vary by location and scope. Confirm them with the relevant municipality and qualified professionals before setting a fixed start date.

Apartment projects may also require advance notice to the building manager or approval for work affecting common elements.

5. Add contingency

A construction programme should include reasonable float for hidden conditions, minor design clarifications, delivery variation, and final corrections.

Contingency is not an invitation to work slowly. It is protection against promising an exact handover date based on a schedule with no tolerance.

6. Update the programme during construction

The original schedule is a baseline, not a document to file away.

Review it regularly using:

• Planned versus actual progress
• Completed quantities
• Upcoming decisions
• Material delivery status
• Approved changes
• Delayed activities
• Recovery actions
• Forecast completion date

Why schedule control matters for the budget

Time and cost are closely connected. A delay can increase site supervision, temporary accommodation, equipment hire, storage, protection, and labour remobilisation costs.

Changes also affect both variables. A variation should record:

• What is changing
• Why it is changing
• The price impact
• The schedule impact
• Who approved it
• Which budget items and activities are affected

Collaborative budgeting and execution tracking help keep the approved budget, progress records, change orders, and forecast completion aligned. This is especially important when payments or progress certificates are based on work completed.

Practical example: a complete apartment renovation

Consider an apartment renovation with a new kitchen, two bathrooms, updated installations, flooring, painting, and some layout changes.

The contractor initially proposes 12 weeks of construction. During planning, the team identifies three schedule risks:

• The kitchen has a six-week manufacturing period.
• The worktop can only be measured after the kitchen base units are installed.
• A bathroom tile is not available until the middle of the planned tiling phase.

Instead of starting demolition immediately, the team confirms the kitchen drawings, orders the units, selects an available bathroom tile, and links each purchase to a required-on-site date.

The construction period may still be 12 weeks, but the overall forecast is now more credible. The budget is also easier to control because the selected products, quantities, delivery dates, and associated work packages have been agreed before execution.

Common renovation scheduling mistakes

Confusing construction time with total project time

Design, approvals, contractor selection, and procurement may take as long as the visible site work.

Starting before the scope is defined

An incomplete scope produces provisional prices, repeated decisions, and avoidable variations.

Choosing materials too late

Late selection can stop dependent trades or force substitutions made under pressure.

Ignoring drying and curing periods

Waterproofing, screeds, plaster, adhesives, paint systems, and other materials require technical waiting periods. Adding more labour does not eliminate these dependencies.

Assuming every trade can work simultaneously

Crowded sites reduce productivity and create safety, access, and quality problems.

Failing to track changes

Small homeowner requests can accumulate into a significant delay when their effects are not recorded.

Setting the move-in date too close to practical completion

Allow time for testing, snagging, cleaning, furniture installation, and correction of outstanding items.

FAQ

How long does a complete apartment renovation take?

A common planning range is 8 to 16 weeks of construction, plus the time required for design, quotations, approvals, and procurement.

How long does a complete house renovation take?

A broad whole-house renovation often requires 3 to 6 months or more. Structural, roof, façade, energy, and external works can extend the programme.

Is the renovation faster when the design is finished?

Usually, yes. A coordinated design reduces site decisions and allows accurate budgeting and procurement. The benefit is greatest when products are not only selected but also available on time.

Can I live in the property during the renovation?

It depends on the scope. Living on site may slow the project because teams must maintain safe access, utilities, dust separation, and usable areas.

What causes the most common renovation delays?

Incomplete decisions, late materials, changes during construction, hidden defects, approval issues, and poor trade coordination are frequent causes.

Can a contractor guarantee an exact completion date?

A contract can establish milestones and completion obligations, but the programme should clearly state assumptions, owner decisions, exclusions, variations, and events outside the contractor’s control.

Conclusion

A renovation may take a few weeks or more than six months, but surface area alone does not determine the answer. Scope, design maturity, approvals, procurement, construction dependencies, and change control are more useful indicators.

Before committing to a move-in date, ask for a programme covering both pre-construction and site execution. Connect that programme to the budget, material schedule, progress records, and approved changes so that the forecast remains usable throughout the project.