A house is 22 systems on clocks, from 10 to 200 years.
Every part of a house runs on its own clock. A smoke detector is spent at 10 years; the masonry holding the place up can stand for two centuries. In between sit 22 separate systems, each ageing at its own rate, and you are asked to track all of them at once. This is a component-by-component map of how long the parts of a European house last: 84 tracked parts across 22 systems, every figure sourced and tagged with the confidence behind it.
The data exists. It was never built for you.
There is no free, homeowner-facing guide to how long the parts of a European house last and what each costs to replace. The European references that exist (NEN 2767, BS 7543, VDI 2067, ISO 15686, the national valuation tables) are paywalled professional standards for surveyors, valuers, and asset managers. The popular consumer charts anyone can find online (NAHB, InterNACHI) are American, built on US products, costs, and climate.
This study is the first half of the map a homeowner needs: how long each part lasts. The second half, what that means for your monthly budget, is the method behind the plan; what any one part costs to replace is in the repair-or-replace calculator. The data underneath exists; what was missing is a homeowner’s version of it.
The clocks you reset are the short ones.
Sorted longest-lived at the top to shortest at the bottom, the long clocks (grey outlines) run from forty years to two centuries; the ones you reset while you live there (solid terracotta) top out at forty.
years · one representative variant per system · source: appkeep component-lifespans dataset
Load-bearing masonry, 100–200 years. You never replace it on a schedule; an inspection finds it if it ever moves.
A smoke detector, on a fixed 10-year replacement cycle (EN 14604 alarms carry a replace-by date). A safety consumable, replaced by the calendar, not by wear.
Boiler 15–20, wet-room membrane 20–30, windows 25–35, interior paint 12–16. These fire while you own the place.
See the full table of 22 systems
| System | Representative part | Lifespan (yr) | Clock |
|---|---|---|---|
| Carrying structure | Masonry (brick/stone) | 100–200 | long |
| Foundation | Strip footing (masonry/concrete) | 100–150 | long |
| Roof | Clay tile covering | 60–100 | long |
| Walls (exterior shell) | Brick facade | 60–100 | long |
| Chimneys / flues | Masonry chimney | 50–100 | long |
| Waste water | Cast iron drain pipes | 50–100 | long |
| Electrical system | Copper wiring (post-1970 installation) | 50–80 | long |
| Stairs & ramps | Timber staircase | 40–80 | long |
| Water supply | Copper water pipes | 40–70 | long |
| Gas supply | Copper gas pipes | 40–60 | long |
| Security | Mortice lock | 25–40 | you reset |
| Miscellaneous | Solar PV panels | 25–35 | you reset |
| Openings (windows, doors, skylights) | PVC window frames | 25–35 | you reset |
| Lightning protection | Standard lightning protection system | 20–30 | you reset |
| Vertical transport | Passenger elevator | 20–30 | you reset |
| Wet spaces | Tile-on-membrane waterproofing system | 20–30 | you reset |
| Data / telecom | Ethernet cabling (Cat 5e/6) | 15–25 | you reset |
| Drainage | PVC gutters and downpipes | 15–25 | you reset |
| Heating system | Gas combi boiler | 15–20 | you reset |
| Interior finishes | Internal wall paint | 12–16 | you reset |
| Ventilation / AC | Extract fan (bathroom/kitchen) | 10–15 | you reset |
| Fire safety equipment | Smoke detector | 10–10 | you reset |
Nothing big needs replacing for the first fifteen years. Then three clocks strike inside a decade.
Each part sits at the soonest it typically comes due. For the first fifteen years the only replacements are small consumables: a detector, an extract fan, a coat of paint. Then the boiler, the wet-room membrane, and the windows all reach the end of their lives within a decade of each other.
years of ownership · marker sits at the soonest that part typically comes due · big-ticket replacement · smaller upkeep
The axis runs a little past 60 years, so the load-bearing structure that stands for a century or more sits off to the right, mapped in the ladder above. A marker’s position shows when a clock first strikes, not what the job costs: for the price of one job, the repair-or-replace calculator answers with its confidence label in the same answer.
See the replacement timeline as a table
| Part | Soonest (yr) | Typical range (yr) | Type |
|---|---|---|---|
| Detector | 10 | 10–10 | Smaller upkeep |
| Extract fan | 10 | 10–15 | Smaller upkeep |
| Paint | 12 | 12–16 | Smaller upkeep |
| Boiler | 15 | 15–20 | Big-ticket replacement |
| Data cabling | 15 | 15–25 | Smaller upkeep |
| Gutters | 15 | 15–25 | Smaller upkeep |
| Wet room | 20 | 20–30 | Big-ticket replacement |
| Lock | 25 | 25–40 | Smaller upkeep |
| Windows | 25 | 25–35 | Big-ticket replacement |
| Gas pipes | 40 | 40–60 | Smaller upkeep |
| Stairs | 40 | 40–80 | Smaller upkeep |
| Water pipes | 40 | 40–70 | Big-ticket replacement |
| Chimney | 50 | 50–100 | Smaller upkeep |
| Drains | 50 | 50–100 | Big-ticket replacement |
| Rewiring | 50 | 50–80 | Big-ticket replacement |
| Roof | 60 | 60–100 | Big-ticket replacement |
Europe is asking every homeowner to plan decades ahead.
The revised Energy Performance of Buildings Directive fell due for transposition into national law on 29 May 2026, and member states are standing up building renovation passports: a timetable of measures for each home, with residential energy use set to fall 16% by 2030 (European Commission, Energy Performance of Buildings Directive).
A renovation passport is a maintenance plan by another name, and it only works if someone knows when each part of the house reaches the end of its life. That is the number this study supplies. The one place it stays silent is the heat pump: the technology is still young enough that its service life has not settled, so the honest range is wide and this study will not pin it.
Insurers already price one of these clocks.
In Sweden, an insurer’s payout turns on the age of a wet room. Swedish wet-room trade practice (the Byggkeramikrådet and GVK regime) puts the technical life of a tiled bathroom’s waterproofing membrane at 20 to 30 years, with renewal recommended around year 30. Several Swedish insurers treat the waterproofing as written off once it passes 30 years: damage to the structure underneath stays covered, but the membrane’s share of a water-damage claim falls on the owner. The dataset here carries the same membrane at 20 to 30 years, tagged to Swedish and Finnish sources, because a Nordic wet room is a regulated component with its own clock.
How the numbers are built, and what is held back.
Every figure is a sourced range, never a single spurious number. Lifespans are mid-range estimates for European residential stock, synthesised from freely-usable authoritative sources: the German government BBSR component table and the national valuation tables, the Dutch RgdBOEI inspection standard, Finnish Rakennustieto service-life cards and Motiva, Swedish Byggkeramikrådet and Boverket material, with US NAHB and InterNACHI figures used only to cross-check, never as a European number. The paywalled professional standards (NEN 2767, BS 7543, VDI 2067, ISO 15686) are named as references consulted; none of their tables is copied.
Each figure carries a confidence level, from high (three or more sources agree within a narrow band) down to unverified (fewer than two independent residential sources). Physics travels across borders, so a copper pipe corrodes the same everywhere; climate, regulation, and market do not, so every figure is tagged with the countries whose evidence backs it. That tag flags a range resting on US evidence before it is trusted for a Finnish or Dutch house.
Of 84 tracked parts, 77 are verified and ready. Seven are held back on purpose, and naming them is the point: the four types of heat pump and the EV charger are too new for their service life to have settled, and prefab bathroom pods have no numeric source we could stand behind. Single glazing has no authoritative range: the Finnish and Swedish heritage agencies say a maintained old window lasts for centuries. Naming the seven gaps is what makes the other 77 figures worth trusting.
Common questions
How long do the parts of a house last?
It depends entirely on the part. A house is not one thing that wears out but roughly 22 separate systems, each on its own clock. The shortest run about a decade: a smoke detector runs on a fixed 10-year replacement cycle, an extract fan at 10 to 15, a coat of interior paint at 12 to 16. The longest run for centuries: load-bearing masonry lasts 100 to 200 years and is never replaced on a homeowner schedule. Most of what an owner budgets for sits under 40 years: a boiler at 15 to 20, a wet-room membrane at 20 to 30, windows at 25 to 35.
Is there European data on how long house components last?
Yes, but not for homeowners. The European references that exist are paywalled professional standards for surveyors, valuers, and asset managers: NEN 2767 in the Netherlands, BS 7543 in the UK, VDI 2067 in Germany, ISO 15686, and the national valuation tables. The free consumer charts online (NAHB, InterNACHI) are American, built on US products, costs, and climate. There is no free, homeowner-facing map of how long the parts of a European house last, which is the gap this study fills.
How long does bathroom waterproofing last?
A tiled wet room’s waterproofing membrane has a technical life of about 20 to 30 years in Nordic practice (the Swedish Byggkeramikrådet and GVK regime), with renewal recommended around year 30. Several Swedish insurers treat the waterproofing as written off once it passes 30 years: the structure underneath stays covered, but the membrane’s share of a water-damage claim falls on the owner. The silicone seams on the surface are a separate, shorter cycle, resealed every 5 to 10 years.
Your house keeps its own clocks.
A chart of the average house is a start. Your own house runs on its own clocks, set by what you have and when it went in. The repair-or-replace calculator answers whether one ageing part is in a repair year or a replacement year, and the demo plan projects every clock in a house forward. Both run on the dataset above, and both are free to open.