The Complete Bathroom Renovation Guide for Hawke's Bay

Start by identifying what is not working in your current bathroom.

Consider the layout, storage, lighting, ventilation, shower size, accessibility and how many people use the room. It also helps to establish a realistic budget early so the design can be developed around what you are comfortable investing.

A site consultation with an experienced bathroom renovation builder can help identify opportunities and potential challenges before you begin selecting products.

It is sensible to begin planning several months before you would like construction to start.

Design decisions, product selections, quotations, lead times and scheduling all take time. Starting early gives you more product choice and reduces the risk of your renovation being delayed by unavailable fixtures or trades.

The planning period depends on the complexity of the project and how quickly selections are made.

A straightforward renovation using the existing layout may be planned relatively quickly. A complete redesign involving custom cabinetry, plumbing changes, detailed tile layouts or consent requirements will generally take longer.

Good planning is rarely wasted time. Decisions made before demolition usually save time and money during construction.

Not every bathroom renovation requires formal architectural drawings, but every project benefits from a clear layout and documented selections.

For more complex renovations, plans can help coordinate plumbing, electrical work, cabinetry, lighting, tile layouts and fixture locations.

Where structural work or regulated building work is involved, more detailed documentation may be required.

Many bathroom renovations can be completed without Building Consent, particularly where fixtures remain in similar locations and no structural or significant regulated work is involved.

Consent may be required where the renovation includes structural alterations, changes affecting the building’s weathertightness, substantial drainage work or other restricted work.

The requirements depend on the project, so they should be confirmed during the planning stage rather than assumed.

Yes.

BuildMac can help with the room layout, fixture positioning, storage, lighting, tile concepts, product selections and the overall design direction.

Because we understand both design and construction, we can assess whether an idea will work practically before it reaches site.

That depends on the condition of the existing bathroom, the likely sale timeframe and the value of the property.

A well-designed bathroom can improve presentation and buyer appeal, but it is important not to overcapitalise. For a home being prepared for sale, a practical and broadly appealing renovation may provide better value than highly personalised luxury selections.

The cost varies considerably depending on the size of the room, the existing condition, the products selected and whether the layout is changing.

A renovation that retains the existing plumbing positions will generally cost less than a complete redesign involving structural work, drainage changes, custom cabinetry and premium finishes.

The most reliable way to establish a realistic budget is through a site visit and a clearly defined scope.

Bathrooms may be small, but they involve a high concentration of specialised work.

A typical renovation may require a builder, plumber, electrician, waterproofer, tiler, painter, cabinetmaker and glass installer. There are also significant costs in demolition, substrates, waterproofing, drainage, fixtures and finishing details.

The cost reflects the technical complexity and number of trades involved, not simply the floor area.

There is no single answer, but major cost areas often include labour, plumbing, tiling, cabinetry, shower systems and fixture selections.

Moving plumbing or changing the room layout can also add cost, particularly where access beneath the floor is difficult or concrete needs to be altered.

Usually, yes.

Retaining the main plumbing locations can reduce demolition, drainage and construction work. However, keeping a poor layout purely to save money may not deliver the best long-term result.

The right decision balances construction cost against functionality and the value of improving the room.

It is wise to keep a contingency available, particularly in an older home.

Demolition may uncover water damage, deteriorated framing, old pipework, inadequate previous repairs or substrates that need replacing.

A contingency of around 10% is commonly considered during renovation planning, although the appropriate amount depends on the age and condition of the property.

It is technically possible, but it is rarely the most efficient approach.

Bathroom work is highly sequenced, and reopening completed surfaces later can increase cost and create compatibility issues. Completing the demolition, building work, services, waterproofing and finishes as one coordinated project generally produces a better result.

Sometimes.

The highest-priced product is not automatically the best choice, but quality fixtures can offer better warranties, more reliable components and improved long-term performance.

We recommend investing in products that are difficult or disruptive to replace later, while being more flexible with accessories that can be upgraded easily.

The most effective ways include:

• Keeping the existing layout where practical

• Selecting products early

• Using standard-sized fixtures

• Limiting highly detailed tile features

• Choosing one or two statement elements rather than upgrading everything

• Investing in essential construction while keeping decorative selections sensible

Cutting costs in framing, substrates, waterproofing, plumbing or ventilation is rarely worthwhile.

Keep the layout when it already functions well and the available space is being used efficiently.

Consider redesigning it where the shower is too small, storage is inadequate, doors conflict, circulation is poor or the room does not suit the people using it.

The best layout is not necessarily the most dramatic. It is the one that makes the room easier to use every day.

A walk-in shower can create an open and contemporary appearance, but it needs enough space to control water and draughts properly.

The screen length, showerhead position, floor falls and room layout all need to be considered. In a very small bathroom, a fully open shower may not be the most practical solution.

A bath is valuable for many families with young children and may appeal to future buyers.

However, it should not be included at the expense of an undersized shower or poor circulation. In an adult ensuite, a large shower and better storage may provide more everyday value.

Yes.

A small bathroom can feel larger through:

• A well-planned layout

• Wall-hung cabinetry

• Clear shower glass

• Consistent flooring

• Good mirror placement

• Thoughtful lighting

• Adequate storage

• A restrained material palette

Trying to fit too many features into a compact room often makes it feel smaller.

A double vanity can be valuable in a shared ensuite or family bathroom, provided there is enough room. Minimum width should be 1500mm

In some bathrooms, a generous single basin with more usable benchtop and drawer space may be more practical than squeezing in two small basins.

More than most people initially expect.

Plan storage for toiletries, towels, cleaning products, medicines, toilet paper, hair appliances and spare supplies. Drawer storage is often easier to use than deep cupboards, while a shaving cabinet can add storage without consuming floor area.

There is no universal best layout.

The right arrangement depends on the room dimensions, window and door positions, drainage, privacy, accessibility and the people using the bathroom.

A good layout should feel easy to move through and avoid awkward conflicts between doors, drawers, shower glass and fixtures.

Where possible, we generally prefer not to make the toilet the first feature visible from the doorway.

A vanity, feature wall or bath often creates a more inviting first impression. However, the overall functionality of the room remains more important than following a strict rule.

It is worth considering, particularly if you intend to remain in the home long term.

Features such as wider shower entries, level-access showers, suitable framing for future grab rails and adequate circulation can make the room easier to adapt later without making it feel institutional now.

That depends on the room and your storage requirements.

Wall-hung vanities create a lighter appearance and make the floor easier to clean. Floor-standing vanities can provide more storage, while custom cabinetry allows the room dimensions to be used more effectively.

For most everyday storage, yes.

Drawers make it easier to see and reach items at the back. They can also be organised more effectively than a large cupboard under the basin.

Pipework and basin selection need to be coordinated carefully so the drawers remain useful.

Chrome is generally one of the easiest finishes to match, clean and maintain.

Brushed finishes can be more forgiving of fingerprints and water marks than highly polished surfaces. Matte black and decorative finishes can look striking but may require more care and should be selected from reputable ranges with suitable warranties.

They do not have to match perfectly, but they should feel intentional.

Tapware, shower hardware, towel rails, mirror frames and cabinet handles should either share a finish or form part of a considered material palette. Too many unrelated finishes can make the room feel visually unsettled.

They can be, particularly where they provide useful facial lighting, demisting and a clean modern appearance.

The quality of light matters. An LED mirror should not be expected to replace all other task and ambient lighting in the bathroom.

Power supply and framing requirements should be planned before the walls are lined.

Yes, when they are selected and installed appropriately.

Large-format tiles reduce visible grout lines and can create a clean, spacious appearance. However, they require a flat, stable substrate and careful planning around floor falls, niches and penetrations.

Larger tiles with fewer grout joints are generally easier to maintain.

Very textured surfaces, small mosaics and pale grout may require more cleaning. The tile should still have a suitable level of slip resistance for its location.

Matching grout creates a quieter and more seamless appearance.

Contrasting grout emphasises the shape and pattern of the tiles. It can be effective as a design feature, but it also highlights any variation in tile size or installation.

Many homeowners consider it one of the most enjoyable bathroom upgrades.

It provides even warmth, keeps the floor comfortable underfoot and does not take up wall space. It is much easier to install during the renovation than add later.

Heated towel rails are primarily designed to warm and dry towels.

They may contribute a small amount of heat to the room, but they are not usually a substitute for dedicated bathroom heating.

There is no correct number based solely on room size.

Lighting should be designed around the vanity, shower, bath, circulation and natural light. A small number of carefully positioned fittings can perform better than multiple downlights arranged in rows across the ceiling.

Many complete bathroom renovations take approximately three to six weeks once construction begins.

The timeframe depends on the scope, inspections, product availability, drying and curing requirements, custom cabinetry and whether hidden issues are discovered.

A rushed programme should never compromise waterproofing, curing times or workmanship.

Generally, no.

Once demolition begins, the room is normally unavailable until the final plumbing and electrical fit-off is complete.

Where the home has only one bathroom, temporary arrangements should be discussed before work starts.

In most cases, yes.

There will be noise, dust, trade access and periods without the bathroom. A good builder will explain the programme, protect adjacent areas and manage the site to minimise disruption as much as reasonably possible.

With a full-service renovation, the main contractor should coordinate the builders, plumbers, electricians, waterproofers, tilers, painters, cabinetmakers and glass installers.

Clear coordination helps prevent gaps between trades and ensures each stage is ready for the next.

The builder should stop and assess the issue before covering it over.

You should receive an explanation of what has been found, why it needs attention and any effect on the cost or programme. Additional work should be agreed and documented before proceeding whenever practicable.

The process should begin with checking the framing and substrate before the membrane is applied.

The substrate must be suitable, stable, correctly fixed and properly prepared. The waterproofing system should then be installed in accordance with the manufacturer’s requirements, with appropriate documentation retained.

Changes are possible, but they can affect cost, timing and completed work.

The earlier a change is made, the easier it is usually to accommodate. Any variation should be documented clearly, including the price and any programme implications.

Common causes include:

• Late product selections

• Long supplier lead times

• Hidden damage

• Changes during construction

• Custom manufacturing

• Inspection requirements

• Inadequate preparation

• Trades having to return because earlier work is incomplete

Thorough planning and early ordering reduce many of these risks.

The contractor should complete a thorough quality check and resolve any agreed defects or incomplete items.

Fixtures, drainage, lighting, cabinetry, shower glass, silicone, painting and general presentation should all be inspected.

The homeowner should also receive an explanation of how the products operate and how they should be maintained.

You should receive the relevant warranties for products and workmanship, together with supporting documentation where applicable.

This may include information for tapware, cabinetry, shower systems, waterproofing, electrical work, plumbing fixtures and specialist products.

The BuildMac handover package can include:

• Product and model information

• Colours and finish schedules

• Supplier and contractor details

• Warranty documentation

• Maintenance guidance

• Construction-stage photographs

• Photographs of hidden framing, plumbing, wiring and fixing locations

This information makes future maintenance, alterations and product replacement much easier.

Regular cleaning and effective ventilation are the most important steps.

Use products recommended by the manufacturers, avoid harsh abrasive cleaners and remove standing moisture where possible. Keep extraction fans clean and monitor silicone, grout and seals over time.

It depends on the grout product used.

Some cement-based grouts may benefit from sealing, while certain modern grouts have different maintenance requirements. Follow the manufacturer’s guidance and confirm the recommended care process at handover.

Silicone does not last forever.

Its lifespan depends on the product, substrate movement, cleaning, ventilation and how heavily the area is used. It should be checked periodically and replaced if it begins to separate, crack or develop persistent mould.

Contact the builder promptly and explain the issue.

Small adjustments can sometimes be required as products settle or the bathroom begins regular use. A professional contractor should explain whether the item is a maintenance matter, product issue or workmanship concern and arrange the appropriate response.

A bathroom constructed with sound substrates, quality waterproofing, appropriate products and good workmanship should provide many years of service.

Its long-term performance will also depend on ventilation, cleaning, maintenance and how heavily the room is used.

The work behind the finishes is often what determines whether the bathroom continues performing well over time.