We’re operating for all customers, with trading restrictions

Chemwash Top of the South

New Zealand's leading building and house wash
exterior cleaning company.

We Clean Buildings & More

Locally owned and operated, Chemwash was the first company in New Zealand to utilise the combination of formulated detergents and a low pressure, unique fan washing procedure to rinse away dirt, grime and build-up. Our low-pressure system is specialised for washing and cleaning of all exterior surfaces. We effectively clean houses, commercial buildings, shop fronts, concrete, paths, guttering, roofs, fences, wooden decking, outdoor structures and more.

We live in a remarkable environment that thrives in the growth of microscopic organisms. Having the exterior of your property Chemwashed removes those unsightly growths, and inhibits them from re-establishing. While extending the life of the surfaces, we also prevent them from becoming compromised, by coating and eliminating the spores which can impact your health.


** Updated operations during COVID-19 Level 1 Alert Period **

We are available for all exterior property cleaning and sanitising.
Our Chemwash Cleaning System provides specialised sanitisation which is effective at cleaning and disinfecting all exterior surfaces, helping to get rid of algae, spores and viruses including COVID-19. We ensure zero face to face contact throughout the entire process to protect those most vulnerable in our community.
Click here to find out more or request a quote.

Chemwash is owned by locals, we employ locals and now is the time to support local businesses.
Stay safe and be kind.

About Us
About Us

We are experts in washing and maintaining your property, whether it’s your home sweet home or large commercial building.

Request a Quote
Request a Quote

Have you got a query? Contact us and let's have a conversation.


We use a low-pressure system for residential and commercial exterior cleaning.

Get in Touch for your Free, No-obligation Quote

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What our clients are saying


Riverlands, Blenheim

Just wanted to send you a big thank you for the wonderful job you did at our place today. The windows have been a bit of a worry as I haven't been able to do then for some time. The gutters had an amazing clean-out as Graham may not be able to do jobs like that again and the house walls look great.