Damp, mould and waterproofing snags in new-build homes in Cyprus

Covers property in the Republic of Cyprus (Department of Lands and Surveys records). Not the north of the island. Updated 13 Nov 2026.

Short answer

In a new home in Cyprus, check four water paths at handover: the roof and terraces, the balconies and their drains, the seals around doors and windows, and the wet rooms. Test with water where you can. Mould in the first winter usually comes from building moisture and closed windows; a stain that grows after rain is a leak.

Where does water get into a new home?

From above: through a flat roof or a roof terrace, at joints, upstands and drains.
From the side: at the frames of doors and windows, and through cracks in render.
From a balcony: back under the threshold when the fall or the drain is wrong.
From inside: a shower without a sealed tray, a leaking pipe joint, an air-conditioning drain.
From the air: moisture that condenses on cold corners and behind furniture.

Damp is common on the island. In 2023, 32.1% of people in Cyprus lived in a home with leaks, damp or rot, more than twice the EU figure of 15.6% (Eurostat, ilc_mdho01). The signs in older homes are in our damp guide (Damp in Cyprus homes: signs to look for).

How do you test a terrace or balcony at handover?

Look first. Follow every joint along the edges, the upstands and the threshold.
Pour a bucket of water at the door and at the far corner. It should run to the drain and be gone in minutes.
Mark any puddle that stays with tape and photograph it.
Pour water straight into each drain. Listen for it running away.
Go to the room below and look at the ceiling, now and again the next day.

A proper flood test, where the drains are plugged and the terrace is left under water for a day or more, belongs to the builder. It is fair to ask the developer in writing whether one was done before the tiles went down, and to see the photos.

What do you check at doors and windows?

The joint between frame and wall. It should be sealed in one unbroken line, outside and inside. Look at the bottom corners, where water collects, and at the sill: it should slope outwards and stick out past the wall. On sliding doors, find the small drain slots in the bottom track and check they are open.

In our sample house, silicone was missing, cracked or badly done at the entrance door, three glass doors and four windows (Etimo sample report, July 2026). It is the fastest item on any list to fix and one of the most common to forget.

What do you check in bathrooms and at pipes?

Run the shower for five minutes on the walls and the floor. Then look at the other side of the wall and the ceiling below.
Check that grout and silicone are complete. Open joints in a bathroom let water behind the tiles.
Open the cupboard under each basin after use. Dry means dry to the touch.
Find where each air-conditioning unit drains. A pipe that ends inside a wall cavity or above a ceiling is a leak with a delay.
On the roof, look at the joints of the solar water heater and the tank for white or green deposits.

Why does a new home grow mould in its first winter?

A new concrete and block building holds a lot of water from the concrete, the mortar, the plaster and the screed. It takes months to dry out. If the home is closed up, or lived in with wet washing and no heating, that moisture settles on the coldest surfaces: outside corners, the wall behind a wardrobe, the ceiling of a north-facing bathroom.

The coast adds its own share. Summer humidity on the coast runs at roughly 60% to 90% (DOM, property portal, read 13 Nov 2026).

Air the home daily in the first year, also when it is empty. Ask whoever holds the keys to do it.
Keep furniture a hand’s width off outside walls.
Use the bathroom and kitchen fans, and check they blow outside.
Wipe early spots with a mould cleaner and watch whether they return.

How do you tell condensation from a leak?

Sign	Points to condensation	Points to a leak
Where	Cold corners, behind furniture, around window frames	Under a terrace, bathroom or pipe run; below a window
When	Cold months, worse when the home is closed	After rain, or after someone uses the shower above
Shape	Speckled black spots, spread thin	A stain with an edge, brown or yellow, growing from one point
Touch	Surface damp, wall sound	Paint blistering, plaster soft or salty

A leak goes on the list as urgent, with the date and the weather. Condensation is first a matter of airing and heating. If it keeps coming back in the same place, ask whether that wall or slab edge has insulation.

What do you put on the snag list?

For each water item, write the place, what you saw, the test you did and what you want. For example: "Roof terrace, north-east corner: water stands 10 mm deep after test. Correct the fall and prove it with a water test." Ask for a water test after every waterproofing repair. A repair nobody has tested is a hope.

How to send the list and follow it up: getting the developer to fix snags (How to get a developer to fix snags in Cyprus). The whole process: main guide (Snagging in Cyprus: the complete guide).

Questions buyers ask

Is mould in a new-build home a defect?

It can be. Mould from building moisture in the first winter is common and usually clears with airing and heating. Mould that follows a leak, or returns in the same place however you live, points at a fault in waterproofing, insulation or ventilation and belongs on the list.

How long does a new concrete home take to dry out?

Months, and often through the first winter. It depends on the season of handover, the thickness of slabs and screeds and how the home is aired. We found no official figure for Cyprus.

Can you check waterproofing without rain?

Partly. You can see joints, falls and drains, and you can pour water to see where it goes. Only the builder can flood a terrace for a day. So look again after the first real rain.

Does a new-build home in Cyprus need a dehumidifier?

It can help a new building dry through its first winter, mainly when the home stands empty. It does not fix a leak, so find out first where the moisture comes from.

Who fixes a leak that appears months after handover?

Report it to the developer in writing at once, with dated photos. Whether the developer must fix it depends on your contract and on the time limits. Ask your lawyer if the answer is slow or negative.

Before the keysHave your new home checked before you take the keysAn Etimo inspector walks every room and gives you one snag list with photos for the developer.See the handover check

Property Brief

The 7 documents for a home in Cyprus, what each shows, and the questions for your lawyer.

See the Property Brief

Sources

General information, not legal advice. Your lawyer interprets legal title; Etimo does not.

General information, not legal advice. Your sale contract decides what the developer owes you and by when; ask your lawyer in Cyprus.

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