Returning to a home that has been closed for several weeks will normally involve little more than airing the rooms, unpacking and getting back to everyday life. Even so, spending the first hour on an organised inspection can help you identify leaks, electrical faults, spoiled food, damp or security problems before they cause further damage.

This practical guide is intended for English-speaking residents returning to a detached or semi-detached house in Madrid after being away for two to six weeks. You do not need technical knowledge: begin with immediate safety risks and then inspect the property one area at a time.

In brief: critical actions during the first 60 minutes

  • Do not switch everything on immediately: inspect the outside and entrance before using lights or appliances.
  • Check for the smell of gas, standing water, sparks, burning smells and unusual noises.
  • Open windows to ventilate the property once you are satisfied that it is safe to remain inside.
  • Inspect the consumer unit and reconnect high-consumption appliances gradually.
  • Look for water leaks beneath sinks, around toilets and near the boiler or electric water heater.
  • Check the fridge and freezer before consuming anything perishable.
  • Photograph any abnormal condition before cleaning, moving or repairing affected items.

Put safety first when entering

Why this matters: before restoring normal use of the house, rule out immediate risks involving gas, electricity, water, fire or visible damage to the building.

Your initial inspection

  • Look at the façade, visible roof areas, entrance, doors and windows before going inside.
  • Check for broken glass, damaged shutters, forced locks or loose external elements.
  • After opening the door, pause for a few seconds and pay attention to smells, sounds and visible changes.
  • Listen for running water, continuous dripping, electrical buzzing or active alarms.
  • Check the floor for standing water before approaching sockets, cables or electrical appliances.
  • Inspect the consumer unit—known in Spain as the cuadro eléctrico—without touching it if it appears wet, scorched, distorted or unusually hot.
  • If there is no immediate danger, open windows on different sides of the house to create cross-ventilation.
  • Switch lights on cautiously and one area at a time.
  • Test smoke and carbon monoxide alarms using their test buttons.

Warning signs and what to do

  • You smell gas: do not operate light switches, electrical devices, flames or lighters. If you can do so without putting yourself at risk, open doors and windows manually and close the gas shut-off valve. Leave the property and call 112 or your gas distributor’s emergency number from outside.
  • You see sparks, smoke or scorch marks, or smell burning: move away from the affected area. Do not attempt to restore the power and arrange an urgent electrical assessment.
  • There is standing water near sockets, cables or appliances: do not enter the water or use the electrical installation. Isolate the supply only if the consumer unit can be reached from a completely dry and safe position.
  • You find extensive mould or saturated materials: limit access, ventilate when safe and request professional advice.
  • You see recent structural damage: do not stand beneath bulging ceilings, unstable finishes, major new cracks or loose building elements.

Electricity and connected systems

Why this matters: a power cut, voltage disturbance, appliance fault or tripped protective device may have occurred while the property was empty.

  • Check the consumer unit for damp, excessive heat, a burning smell or discolouration.
  • Look for a tripped residual current device or circuit breaker. In Spain, these may be labelled diferencial and magnetotérmico.
  • Before resetting a circuit, switch off or unplug the larger appliances connected to it.
  • Reset the protective device once. If it trips again, leave it off and contact an electrician.
  • Reconnect the oven, hob, washing machine, dishwasher, air conditioning and other high-consumption equipment gradually.
  • Check extension leads, chargers, plugs and sockets for cracking, heat, distortion or dark marks.
  • Test the alarm, cameras, video entry system, router, water-leak sensors and other smart-home devices.
  • Check that automated routines, schedules and security notifications are working correctly.

Repeated tripping, hot sockets, sparking or burning smells require professional investigation. You can also read our guide on when an electrical installation in Madrid may need rewiring.

Water and plumbing

Why this matters: a small leak can remain unnoticed for several weeks and damage flooring, cabinets, walls, ceilings and electrical components.

Inspect before opening the main stopcock

  • Look beneath kitchen sinks and bathroom basins.
  • Inspect the connections to the washing machine and dishwasher.
  • Check around the base, cistern and water connection of every toilet.
  • Inspect the boiler, hot-water cylinder or electric water heater and the surrounding floor.
  • Look for new stains, peeling paint, swollen skirting boards or distorted flooring.
  • If the water meter is accessible, note its reading before restoring normal use.

How to restore the water supply

  • If you closed the main stopcock—llave de paso in Spanish—before leaving, reopen it slowly.
  • Observe the visible connections and surrounding areas for several minutes.
  • Run one cold tap briefly before checking the remaining cold-water outlets.
  • Then test the hot water.
  • Flush each toilet and check that the cistern stops filling normally.
  • Observe the water pressure, colour and smell. A brief change after several weeks without use may clear after flushing, but a persistent abnormality should be reported to the water supplier or a qualified professional.
  • Check that sinks, basins, showers and floor drains empty without backing up or draining unusually slowly.
  • If a little-used floor drain smells, its water trap may have dried out. Add clean water to restore the water seal.

If you suspect a leak, close the main stopcock and do not cover the stain with paint or sealant. The source may be a supply pipe, waste connection, rainwater ingress or condensation, and each requires a different response.

Air conditioning, heating and ventilation

Why this matters: these systems affect comfort, humidity and indoor air quality after the house has remained closed during Madrid’s summer weather.

  • Ventilate the property naturally before switching on the heating or air conditioning.
  • If the system allows it, run fan-only or ventilation mode for a few minutes before selecting cooling or heating.
  • Inspect, clean or replace accessible filters according to the manufacturer’s instructions.
  • Check that thermostats display a reasonable temperature and have retained their settings.
  • Watch for error codes, persistent smells, vibrations or unusual sounds.
  • Check for water around indoor units and condensate drainage points.
  • If ice or frost appears, switch the equipment off and request an assessment. Do not remove the ice with tools or hot water.

Kitchen and food safety

Why this matters: a power cut or fridge fault can spoil food even if the appliance is running again when you arrive.

  • Check the displayed temperature of the fridge and freezer, where available.
  • Look for evidence of thawing and refreezing, such as dried liquid, deformed packaging, unusual ice deposits or food frozen together in one solid block.
  • Discard perishable food if you do not know how long it was inadequately refrigerated.
  • Do not taste food to decide whether it is safe.
  • Clean spills and inspect the door seals.
  • Empty and clean the kitchen bin and the surrounding cupboard.
  • Inspect bread, fruit, pet food and dry goods for insects or damage.
  • If the kitchen has a waste-disposal unit, operate it only in accordance with the manufacturer’s instructions.

Damp, stale smells and mould

Why this matters: limited ventilation can allow humidity and stale air to accumulate, particularly in basements, bathrooms, cupboards and cooler corners.

  • Create cross-ventilation by opening windows on different sides of the house.
  • Use a hygrometer to check the relative humidity if you have one.
  • If relative humidity remains above 60%, continue ventilating and consider using a dehumidifier in accordance with its instructions.
  • Inspect corners, ceilings, fitted cupboards, basements and walls behind furniture.
  • Look for musty smells, dark marks, blistering paint, swollen wood or damp fabrics.
  • Move furniture slightly away from a damp wall to inspect the hidden surface and improve airflow.
  • Before cleaning a small mould patch, ventilate the area and wear gloves, eye protection and an appropriate mask.
  • Follow the instructions supplied with the cleaning product.
  • Never mix bleach with ammonia, acids or other cleaning chemicals.
  • If mould covers a large area, returns after cleaning or affects porous materials, document it and request a professional assessment.

Cleaning the visible mark will not solve the problem if a leak, failed waterproofing detail or persistent condensation remains active. Read more about terrace leaks in Madrid or consult our waterproofing and damp treatment service in Madrid.

Pests

Why this matters: insects and rodents may find food, shelter or an entry point while the house is unoccupied.

  • Look for droppings, nests, dead insects, gnawed packaging or scattered food.
  • Inspect the pantry, garage, storage rooms, service cupboards and areas beneath furniture.
  • Check any traps that were left in place.
  • Store food in sealed containers and remove crumbs and spills.
  • Seal small entry points only after confirming that they are not necessary ventilation openings, drainage points or service routes.
  • Arrange professional pest control if you find a nest, repeated activity, substantial droppings or damaged electrical cables.

Exterior and home security

Why this matters: sunshine, wind, rain and attempted access can affect the building envelope and security of a detached or semi-detached house.

  • Check doors, windows, locks, shutters and insect screens.
  • Inspect accessible seals and draught strips.
  • Look for slipped roof tiles or signs of water ingress from ground level. Do not climb onto the roof.
  • Check visible gutters, drains and rainwater outlets from a safe position.
  • Remove accessible leaves and debris without working at height.
  • Look for standing water in the patio, terrace, garden or garage entrance.
  • Test the garage door, exterior lights and movement sensors.
  • Collect post and parcels and check for missing deliveries.
  • Change temporary alarm codes that were shared with neighbours, cleaners or house sitters.
  • Review the access and notification history of your security system.

Documenting damage and contacting your insurer

Why this matters: clear records can make it easier to explain the problem, obtain quotations and submit an insurance claim.

  • Take general photographs and close-up images before moving or cleaning affected items.
  • Record a short video showing the location and extent of the problem.
  • Write down the date and time when you discovered it.
  • Record meter readings, alarm notifications and equipment error codes.
  • Keep any messages from utility companies concerning outages or supply incidents.
  • Retain invoices and receipts for emergency measures taken to limit further damage.
  • Check your policy conditions and notify the insurer within the applicable period.
  • Do not dispose of damaged materials before documenting them unless removal is necessary for safety or hygiene.

If you arrive at night: a 10-minute safety check

Why this matters: poor visibility makes it easier to miss standing water, obstacles and signs of electrical damage.

  • Use a torch to inspect the entrance before going inside.
  • Look at doors, windows and the floor.
  • Pause after opening the door and check for gas, smoke, burning or a strong damp smell.
  • Listen for running water and alarms.
  • Do not use electrical switches if you smell gas or see water near electrical equipment.
  • If there are no warning signs, open several windows.
  • Switch on one light and check the main routes through the house.
  • Inspect the consumer unit, water stopcock, fridge and safety alarms.
  • Leave roof, gutter and outdoor inspections until daylight.

When to call a professional

Why this matters: certain warning signs may indicate a concealed defect or immediate risk that cannot be assessed safely without specialist knowledge and equipment.

  • Electrician: repeated tripping, sparking, burning smells, hot sockets, a wet consumer unit or recurring power faults.
  • Plumber: a water meter that moves when every outlet is closed, an active leak, loss of pressure, a continuously filling toilet or backed-up drainage.
  • Heating or air-conditioning technician: ice, error codes, abnormal smells, condensate leaks, strong vibration or failure to heat or cool.
  • Pest-control professional: nests, extensive droppings, damaged cables or continuing activity.
  • Water-damage or mould specialist: saturated materials, extensive mould, sewage contamination or damp that returns after drying.
  • Emergency services: a strong smell of gas, fire, smoke, immediate electrical danger, major flooding or any threat to people.

Maceta y Cortafrío provides planned inspections, renovation work and repairs rather than a 24-hour emergency service. If the immediate danger has been controlled and the property requires further work, you can request an assessment in English.

Prevention before your next holiday

Why this matters: a few sensible precautions can reduce the likelihood of leaks, spoiled food and visible signs that the property is empty.

  • Close the main water stopcock if this is compatible with the home’s irrigation, heating and fire-protection systems.
  • Do not disconnect essential equipment before checking how it needs to operate during your absence.
  • Set the thermostat to a suitable holiday or away mode for the season.
  • Remove perishable food and empty all bins.
  • Unplug non-essential appliances.
  • Use timers to operate a small number of lights at varied times.
  • Ask a trusted neighbour or contact to collect post and inspect the outside of the house.
  • Test the batteries in smoke and carbon monoxide alarms.
  • Check security alarms, cameras and water-leak sensors.
  • Secure doors, windows, garage doors and secondary access points.
  • Photograph the condition of the property before leaving.
  • Keep the location of stopcocks and emergency contact numbers accessible.

Printable checklist for returning home after a holiday

Interior and safety

  • [ ] I inspected the exterior before entering.
  • [ ] There is no smell of gas, smoke or burning.
  • [ ] I cannot hear running water.
  • [ ] There is no water near sockets or appliances.
  • [ ] I have ventilated the property.
  • [ ] I have inspected the consumer unit.
  • [ ] I have tested the smoke and CO alarms.
  • [ ] Doors, windows and locks are intact.

Kitchen

  • [ ] The fridge and freezer are operating correctly.
  • [ ] There are no signs of thawing and refreezing.
  • [ ] I have discarded any doubtful food.
  • [ ] I have checked the sink and dishwasher connections.
  • [ ] I have cleaned spills, door seals and the bin.
  • [ ] The pantry shows no signs of pests.

Bathrooms and plumbing

  • [ ] I have checked basins, toilets and showers.
  • [ ] There are no leaks beneath bathroom furniture.
  • [ ] The boiler or water heater is not leaking.
  • [ ] I opened the main stopcock slowly.
  • [ ] Water pressure, colour and smell appear normal.
  • [ ] Waste outlets drain correctly.
  • [ ] Little-used floor drains contain water.

Heating, air conditioning and ventilation

  • [ ] I ventilated before using the system.
  • [ ] The accessible filters are clean.
  • [ ] The thermostat works and is programmed correctly.
  • [ ] There are no unusual sounds, smells or vibrations.
  • [ ] There is no ice or leaking condensate.
  • [ ] The equipment displays no error codes.

Damp and exterior

  • [ ] I checked corners, cupboards and areas behind furniture.
  • [ ] There are no new stains, blistering paint or mould.
  • [ ] I inspected the basement, garage and storage areas.
  • [ ] Visible gutters, drains and outlets are clear.
  • [ ] There is no standing water outside or in the garage.
  • [ ] There is no visible damage to the roof, façade or external openings.
  • [ ] Exterior lighting and security systems work.

Documentation

  • [ ] I photographed any abnormal condition before cleaning.
  • [ ] I recorded the date, time and location.
  • [ ] I saved meter readings, alerts and error codes.
  • [ ] I retained invoices for urgent mitigation work.
  • [ ] I checked my insurance policy where damage occurred.
  • [ ] I reported the incident when required.

One hour of checking can prevent further damage

You do not need to inspect your Madrid home like a building surveyor. The aim is to restore its systems gradually, notice anything that has changed and respond appropriately to warning signs such as water, burning smells, mould, abnormal water pressure or thawed food.

Save this checklist before your next trip and share it with relatives, neighbours or anyone responsible for checking a property that has remained closed for several weeks.

If you discover damp, damaged finishes or installation problems that require a planned repair, contact Maceta y Cortafrío. We assess renovation and repair projects for English-speaking homeowners across Madrid city and the Madrid Region, subject to the property’s location, condition and required scope.

Sources and further information

Disclaimer: this article provides general guidance and does not replace an inspection or diagnosis by a suitably qualified professional. If there is an immediate threat to people or property, leave the affected area and contact the emergency services.