Wondering how much polished concrete floors cost in New Zealand? As a general guide, concrete grinding and polishing typically costs approximately $40–$150 per m², depending on the condition of your concrete, the preparation required and your preferred finish.

However, every concrete floor is different. A new concrete slab may require significantly less preparation than an older floor with existing coatings, adhesive residues, uneven areas or damage.

At NZ Grinders, we assess your concrete and discuss the finish you want to achieve before providing a firm, project-specific quotation. This helps us give you realistic pricing based on the actual work required rather than a generic square-metre rate.

Planning a polished concrete flooring project? Contact NZ Grinders for a free, no-obligation quote.

What Affects the Cost of Polished Concrete Floors?

While $40–$150 per m² is a useful starting point for budgeting, the actual cost of concrete grinding and polishing depends on several factors.

1. Condition of the Existing Concrete

The condition of your concrete is one of the biggest factors affecting the price.

An older floor may require additional grinding to remove adhesives, coatings, surface imperfections or previous flooring residues. Cracks, damage and uneven surfaces can also affect the preparation required.

A new concrete slab may need less preparation, depending on how it has been placed and finished.

2. Size and Layout of the Area

The total floor area can affect the square-metre rate. Larger, open areas may be more efficient to grind and polish than smaller spaces with numerous corners, edges or obstacles.

Access to the site and the amount of detailed edge work can also influence the quotation.

3. Type of Concrete Finish

Different concrete finishes involve different levels of preparation, grinding and polishing.

• Grind & Seal: The concrete is ground to the required finish before a suitable sealer or coating is applied.
• Mechanically Polished Concrete: The concrete itself is progressively refined using diamond polishing equipment to achieve the selected finish.
• Salt & Pepper: A subtle exposure of the fine aggregate.
• Full Stone Exposure: Deeper grinding to reveal the larger stones within the concrete.
• Marble Surface: A refined surface with minimal aggregate exposure.

The finish you select, together with the condition of your slab, will influence the work required and the overall cost.

4. Location and Site Accessibility

Travel, site access and working conditions can affect pricing.

Projects with restricted access, difficult edges or other site limitations may require additional time or specialised equipment.

NZ Grinders undertakes residential and commercial concrete grinding and polishing projects across multiple North Island regions.

Why NZ Grinders Provides Project-Specific Quotes

Every concrete slab is different, and the final result depends on the concrete we’re working with.

That’s why we prefer to assess your floor, understand your expectations and discuss the available finishes before providing a firm quotation.

This allows us to recommend a suitable process and provide realistic pricing for your particular project.

Ready to find out what your polished concrete floor could cost? Contact NZ Grinders for a free, no-obligation quote.

Frequently Asked Questions About Polished Concrete Costs

How much does it cost to polish concrete floors in New Zealand?

As a general guide, concrete grinding and polishing costs approximately $40–$150 per m². However, the final price depends on the condition of your concrete, the preparation required, the size of the area and your chosen finish.

NZ Grinders provides project-specific quotations following an assessment of the floor and the work required.

Is it cheaper to polish a new concrete floor or an existing one?

A new concrete slab may require less preparation than an older floor that has previously been covered with tiles, carpet or vinyl.

However, this isn’t always the case. The way the concrete was placed, its condition and your desired finish all affect the amount of grinding and polishing required.

An existing floor can often be transformed, but we need to assess the slab before confirming what’s achievable.

Is grind and seal cheaper than mechanically polished concrete?

Grind and seal can be a more affordable option because it generally involves fewer mechanical polishing stages.

However, the two systems produce different finishes and have different maintenance requirements.

Mechanically polished concrete progressively refines the concrete surface itself, while grind and seal relies on an applied sealer or coating.

The best option depends on your budget, intended use and preferred appearance.

Can you give me an exact price per square metre?

Not without understanding the condition of your concrete and the finish you want.

An indicative square-metre rate is useful for budgeting, but a firm quotation needs to account for the actual preparation, grinding and finishing required.

Contact NZ Grinders to arrange a free, no-obligation quote for your concrete flooring project.