How to plan a kitchen renovation budget

THE SHORT ANSWER

Start with the total amount you can safely fund, then reserve the contingency before allocating anything else. Price cabinetry, worktops, appliances, plumbing, electrical work, ventilation, finishes, labour, approvals and temporary-kitchen costs as separate workstreams. Lock the layout and appliance models early: moving services or changing dimensions after manufacture is one of the quickest ways to overspend.

Regional note

This guide is written for South Africa, Australia, New Zealand. Always check local codes, product specifications, licences, and site conditions.

Preparation

Information to collect before requesting quotes

A quote is only comparable when each contractor is pricing the same job. Prepare one simple project pack and issue it unchanged to every bidder.

A measured plan showing doors, windows, ceiling height and existing water, waste, gas and electrical points.
The exact appliance schedule, including model numbers, dimensions, connection loads and ventilation clearances.
Cabinet construction, internal fittings, hardware grade, edge details, finishes and worktop specification.
A list of work by others: demolition, rubble removal, plumbing, electrical, gas, tiling, painting and final connections.
Your required start window, access restrictions, working hours and whether the home will remain occupied.
Known approvals, landlord or body-corporate requirements, warranties and completion certificates.

Decision guide

Kitchen budget workstreams to price separately

Use these headings in every quote comparison. A low total can hide omissions, provisional allowances or work that the homeowner is expected to arrange separately.

Workstream	Include in the price	Common budget risk
Cabinetry	Carcasses, doors, panels, plinths, handles, hinges, runners, internals, delivery and installation	Quotes based only on visible door finishes or unspecified hardware
Worktops	Material, cut-outs, edge profile, joins, splashback/upstand, templating and installation	Cut-outs, difficult access or extra support priced after ordering
Services	Plumbing, waste, electrical, gas, extraction, testing and required certification	Relocating sinks, cookers or outlets without checking the existing capacity
Building work	Demolition, disposal, making good, ceilings, walls, floors, waterproofing and structural changes	Concealed damage or assuming old surfaces are ready for new finishes
Appliances and fittings	Appliances, sink, taps, filters, lighting and delivery	Cabinet drawings completed before exact models and clearances are confirmed
Project costs	Design, approvals, site protection, cleaning, temporary kitchen, storage and contingency	Spending the contingency on upgrades before demolition begins

The method

Step by step

Set the funding ceiling

Decide the maximum total you can fund without relying on uncertain resale value or future income. Include finance charges, professional fees, taxes where applicable, temporary accommodation or cooking arrangements, and the amount that must remain untouched for emergencies.

Define what the renovation must solve

List the non-negotiable outcomes—safer circulation, more storage, better ventilation, accessible work zones, durable surfaces or room for a larger household. Separate those needs from attractive upgrades so cuts can be made without losing the purpose of the project.

Investigate before estimating

Measure accurately and check the age and apparent condition of plumbing, drainage, wiring, walls and floors. Confirm whether the preferred layout affects structural elements, windows, gas, waterproofing or required approvals. Where uncertainty is expensive, pay for an appropriate inspection before accepting a fixed budget.

Build a line-by-line cost plan

Allocate every expected item to a workstream rather than relying on one cost-per-square-metre figure. Record whether each amount is a firm quote, an allowance or an estimate. Include delivery, disposal, small hardware, making good and final connections; these modest items become significant when omitted repeatedly.

Keep fixed needs separate from choices

Price compliance, repairs, service capacity, sound installation and essential ventilation first. Put door styles, premium organisers, feature lighting and finish upgrades on a separate options list. This makes value engineering deliberate instead of cutting hidden quality from the construction.

Compare quotations on equal terms

Issue the same plan and specification to at least two suitable contractors or suppliers. Check exclusions, provisional sums, lead times, payment milestones, warranties, who coordinates trades and who carries the risk if measurements are wrong. Clarify differences in writing before choosing.

Protect contingency and control changes

Choose a contingency that reflects uncertainty: a straightforward replacement in a well-understood newer room needs less than an older kitchen with concealed services or structural changes. Do not commit it to upgrades before demolition. Require every change to show the price and time effect before approval.

Before you start

Expert tips

Retaining the sink, cooker and major electrical positions can reduce service work, but only if the resulting layout still functions well.
Specify cabinet internals, handles, exposed ends, edging and hardware—not only the door colour.
Select exact appliances before final cabinet manufacture and verify the manufacturer’s ventilation and clearance requirements.
Link payment milestones to clearly completed work or delivered goods rather than calendar dates alone.
Keep an owner decision log with the drawing revision, agreed price, responsible person and required date.
Photograph existing services before walls, floors or cabinets conceal them.

Common questions

How much contingency should a kitchen renovation have?+

There is no responsible universal percentage. Base it on what remains unknown: a cosmetic replacement with inspected services needs less protection than an older home, relocated plumbing, structural work or custom imported components. Set the allowance before choosing upgrades and keep it uncommitted until concealed conditions are known.

What usually makes a kitchen renovation go over budget?+

Frequent causes include incomplete quotes, late layout or appliance changes, relocating services, concealed water or electrical damage, unsuitable floors or walls, delayed decisions, long-lead replacements and work assigned to nobody. A written scope and change log reduce these risks.

What should I spend more on?+

Prioritise safe compliant work, sound installation, reliable hinges and runners, effective extraction, useful task lighting and components that are disruptive to replace. A fashionable finish on weak cabinetry or poorly coordinated services is rarely good value.

Should I buy appliances before cabinets?+

Select exact models early and confirm dimensions, door swings, ventilation, power, gas, water, waste and service access. Purchase timing can follow the programme, but the cabinet maker must design from current manufacturer information rather than a generic appliance size.

How do I compare kitchen quotations?+

Use the same drawings and written specification, then compare each line for quantity, product, labour, delivery, installation, exclusions, allowances, warranty and certification. Ask bidders to identify anything they believe is missing instead of comparing only the totals.

Do kitchen renovations need approval?+

Rules vary by location and building type. Like-for-like cabinets may require little formal approval, while structural changes, new openings, gas, major plumbing or electrical work, waterproofing and work in sectional-title, strata or body-corporate properties may trigger approvals or licensed work. Check locally before ordering.

Primary references

Sources & further reading

We link to official building-code, government and public-health material where a technical or safety claim needs authoritative context. Local rules and adopted code editions can change.

Know your limit

Stop if the work involves structural uncertainty, hazardous materials, heights, live services, gas, serious water damage, or regulated work. Local rules differ—use an appropriately licensed professional where required.