Paving cleaning for housing associations
Courtyards, paved paths, basement entrances and footpaths form part of a property's shared outdoor areas. Their maintenance is normally arranged through the housing association under its governing documents. Slippery paving creates a fall risk for residents, visitors and delivery staff, so it should be inspected and maintained.
Here, the board receives a comprehensive overview: when paving cleaning of common areas is necessary, how the decision is typically made, what a quote should include, how residents are notified, and how a maintenance plan ensures that you won't face the same problem again next year. We carry out assignments for both private individuals and associations throughout the country, based in Aarhus Ø.
In short: Slippery, green paving slabs in common areas are a fall risk for which the association is responsible. A professional cleaning followed by algae treatment typically lasts 6-12 months and is best performed in spring and early summer. The price depends on the area and type of paving, and larger areas result in a lower price per m². You always receive a fixed quote after inspection, which the board can budget for.
Why is paving cleaning a board responsibility?
Maintaining shared outdoor areas is normally part of the association's responsibilities under its governing documents. Algae and moss can make paving particularly slippery after rain, when residents are using paths, collecting bicycles or taking out bins. Inspecting these areas helps identify where cleaning is needed.
In addition to safety, there is the property's appearance. A clean and well-maintained courtyard enhances the overall impression, which is important for residents' daily lives and for the price when an apartment needs to be sold. In other words, paving cleaning is not a luxury item in the budget, but rather general building maintenance, on par with painting stairwells.
When should common areas be cleaned?
At the latest, when the paving slabs are slippery to walk on, and otherwise when the surfaces are visibly green, grey, or black. The typical signs:
- Green and grayish surfaces: algae, moss, and lichen on paving slabs, concrete, and cobblestones, which become slippery after rain.
- Recurring growth: if the courtyard turns green again every year despite cleaning, it's a sign that the biological layer has never been treated, only rinsed off.
- Black stains: black lichen thrives in north-facing areas and under tree crowns and requires more than just clean water. Read more in our guide to black surfaces and lichen on paving slabs.
- Lichen on paving: pale grey or whitish lichen spots can cling firmly to the paving surface. Lichen is different from mineral deposits or lime staining.
- Worn overall impression: the courtyard looks older than it is, even though the paving is actually perfectly fine.
Many associations manage this with a rented pressure washer and a voluntary work day. Unfortunately, this only removes the visible layer. The algae remain in pores and joints and quickly grow back, often faster than before, because the cleaning has made the surface rougher. For the result to last, an algae treatment is needed afterwards.
What does paving cleaning cost for a housing association?
The price depends on the area, paving type, and degree of soiling, which is why we always provide a fixed quote after inspection rather than an hourly rate. This means the board knows the exact amount before the work is approved, and there are no subsequent charges.
For associations, three factors typically reduce the price compared to private assignments:
- Volume: larger total areas result in a lower price per m², because setup and travel are distributed over a larger surface.
- Maintenance agreement: a fixed agreement for ongoing cleaning is, on average, cheaper than one-off tasks, because the surfaces never become so overgrown that they require extra work steps.
- Combined order: if the courtyard, paved paths, and basement entrances are cleaned in the same go, logistics are shared across the entire job.
If you want an idea of what drives the price before requesting a quote, we have written a guide to paving cleaning prices and methods.
How the board makes the decision
Most boards follow the same process: document the problem, clarify the budget, obtain a fixed quote, and approve it in writing. Take pictures of the worst areas and note approximately how many m² are involved. If the expense is within the board's scope in the bylaws, it can be approved directly; otherwise, it will be placed on the next general meeting as a maintenance item with a specific amount.
Ensure that the quote specifies these points, making approval easy to document:
| Point | What it ensures |
|---|---|
| Description of service | Which areas are cleaned, with which method, and whether algae treatment and jointing are done afterwards |
| Fixed price | No extra charges; the board approves a known amount |
| Schedule | When the work will be performed and when the areas can be used again |
| Guarantee | What applies if the result does not last as agreed |
| Insurance | Documentation for business liability insurance in case of damage during the work |
We always send a written confirmation of the agreement before starting. This makes the decision easy to minute.
How is professional cleaning of common areas carried out?
The work consists of four steps: inspection, gentle mechanical cleaning, algae treatment, and optional joint filling.
Inspection
We assess the paving type (concrete paving slabs, natural stone, cobblestones, asphalt), degree of soiling, drainage conditions, and delicate elements such as flowerbeds and basement doors. This determines which method and product we use.
Gentle mechanical cleaning
The surfaces are cleaned with adjusted pressure. Hard enough to remove the biological layer, gentle enough not to dislodge jointing sand or scratch soft paving slabs. The result is immediately visible.
Algae treatment
Where algae treatment is included, we use a product suitable for the paving and follow its authorised uses, dosage and application instructions. How long the result lasts depends on shade, moisture and exposure. Flowerbeds, drainage and access during treatment need to be considered. Read more about professional algae treatment and pressure washing.
Joint filling
If the jointing sand is loose or gone, we refill the joints in the same process, so the paving is tight and resists both water and new growth.
Neighbors and notification: how to avoid inconveniences
Notify residents with a notice or a message in the resident app a few days before, so cars, bicycles, pots, and garden furniture are moved when we arrive. This is the single factor that contributes most to how smoothly the work proceeds.
Cleaning is noisy and is planned around the property's agreed working hours. Any subsequent treatment must have the dry-weather interval specified on its label. We explain when residents can use the areas again and can plan larger jobs in stages where access allows.
What should a maintenance plan include?
A fixed frequency, a fixed time of year, and an agreement on who monitors the surfaces between treatments. Shady courtyards and north-facing areas typically become overgrown again every year, while open, sunny areas can go longer between treatments.
Plan treatment for a weather window that meets the chosen product's temperature and rain-free requirements. A regular inspection helps identify which areas need attention in the next round. Driveways and paths use the same assessment process as courtyards; see our guide to cleaning driveways and paved paths. With a fixed agreement, the dates are on the calendar in advance, and the association avoids having to make decisions from scratch each year.
Get a fixed quote for your common areas
Send a brief description of the task with approximate m² and a couple of pictures of the area, or call us on 20 98 88 11. We will get back to you within 24 hours with a fixed quote or an agreement for an inspection, and the price will be set before the work begins. We work for housing associations and businesses throughout the country, based in Aarhus Ø.
Frequently asked questions
Can housing associations get a fixed agreement for ongoing maintenance?
Yes. We offer fixed maintenance agreements to housing associations, where common areas are cleaned and treated for algae at an agreed frequency. This keeps the surfaces in good condition all year round and typically results in a lower average price than one-off tasks.
When during the year should common areas be cleaned?
Spring and early summer can provide suitable conditions, but the treatment product's temperature and dry-weather requirements determine the actual timing. Cleaning may be possible at other times of year when weather, drainage and access allow.
Is algae treatment safe for plants and pets?
The product label determines its permitted uses and precautions. Plants, drains and pets must be considered when planning treatment, and residents need clear instructions about access and when the area can be used again. Do not assume that every algae-removal product is harmless to plants or animals.
What is the difference between pressure washing and algae treatment?
Pressure washing mechanically removes the visible layer and provides an immediate result. Algae treatment kills algae, moss, and lichen deep within the paving and prevents them from regrowing. The most durable result is achieved by combining the two.
Should residents be notified before the work begins?
Notify residents in good time and follow the association's own rules. A notice helps ensure cars, bicycles, pots and furniture are moved before work starts, and tells residents which areas are unavailable and when access will resume.