HomeScore Lifespan Database 2026
How long every major system in your home is actually expected to last — benchmarked across 42 systems, 177 brands, and 102 material variants.
Key findings
177 branded SKUs and 102 material variants benchmarked against manufacturer specs, NAHB studies, and InterNACHI standards.
Premium tier reaches 150+ years. By contrast the shortest-life category (Home Security System) averages just 6 years.
The lifespan delta between best-in-class and budget brands inside the same system can exceed two decades — driving the single biggest invisible cost of ownership.
Lifespan recorded as 0 years in the database. Both are flagged for replacement regardless of installed age based on documented field-failure history.
2026 replace-on-sight list
Two systems carry a documented field-failure history significant enough to warrant replacement regardless of installed age: Federal Pacific (FPE) electrical panels and polybutylene (PB) plumbing supply lines. Both are recorded as 0-year lifespan in the database. Insurance carriers increasingly refuse to bind policies on homes containing either system.
Full database — sorted by average lifespan
42 systems shown| # | System | Avg life |
|---|---|---|
| 1 | Foundation | 103 yrs |
| 2 | Insulation | 63 yrs |
| 3 | Chimney | 48 yrs |
| 4 | Gutters & Downspouts | 41 yrs |
| 5 | Plumbing (Supply Lines) | 40 yrs |
| 6 | Deck | 35 yrs |
| 7 | Siding | 32 yrs |
| 8 | Electrical Panel | 31 yrs |
| 9 | Solar Panel System | 30 yrs |
| 10 | Septic System | 27 yrs |
| 11 | Fencing | 27 yrs |
| 12 | Boiler | 24 yrs |
| 13 | Driveway | 24 yrs |
| 14 | Roof | 23 yrs |
| 15 | Landscaping & Hardscape | 23 yrs |
| 16 | Windows | 22 yrs |
| 17 | Standby Generator | 21 yrs |
| 18 | Radon Mitigation System | 20 yrs |
| 19 | Garage Door | 20 yrs |
| 20 | Flooring | 20 yrs |
| 21 | Gutters & Downspouts | 20 yrs |
| 22 | Furnace | 19 yrs |
| 23 | Central HVAC System | 18 yrs |
| 24 | Fireplace | 18 yrs |
| 25 | Attic & Whole-House Fan | 18 yrs |
| 26 | Kitchen Remodel | 18 yrs |
| 27 | Bathroom Remodel | 18 yrs |
| 28 | Air Conditioner | 17 yrs |
| 29 | Ductless Mini-Split | 17 yrs |
| 30 | Water Heater | 16 yrs |
| 31 | Heat Pump | 16 yrs |
| 32 | Water Softener | 16 yrs |
| 33 | EV Charger | 16 yrs |
| 34 | Pool | 15 yrs |
| 35 | Well System | 15 yrs |
| 36 | Irrigation System | 14 yrs |
| 37 | Water Filtration | 14 yrs |
| 38 | Major Appliances | 13 yrs |
| 39 | Sump Pump | 10 yrs |
| 40 | Exterior Paint | 10 yrs |
| 41 | Smart Thermostat | 9 yrs |
| 42 | Home Security System | 6 yrs |
Average = mean of midpoints across branded SKUs (excluding "Other / Unknown"). Material-only systems use material midpoints. Banned systems (FPE, polybutylene) excluded from sort.
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<iframe src="https://myhomescore.app/embed/lifespan-database" width="100%" height="640" frameborder="0" style="border:1px solid #e7e5e4;border-radius:12px" title="HomeScore Lifespan Database 2026"></iframe> <p style="font-size:12px;color:#78716c;margin-top:6px">Source: <a href="https://myhomescore.app/data/lifespan-database" target="_blank" rel="noopener">HomeScore Lifespan Database 2026</a> by HomeScore</p>
Methodology
The HomeScore Lifespan Database aggregates expected service life for 42 residential home systems. Each entry is sourced from manufacturer specification sheets, NAHB Study of Life Expectancy of Home Components, and InterNACHI inspection standards, then normalized into min/max year ranges per brand or material grade.
Average life is the mean of midpoints across branded SKUs in the system (excluding the "Other / Unknown" placeholder). For systems where lifespan is dominated by material grade rather than brand (plumbing, septic, fencing, gutters, driveway), material midpoints are used instead.
Banned systems — Federal Pacific (FPE) electrical panels and polybutylene (PB) plumbing — are recorded with a 0-year lifespan to flag them for unconditional replacement. This reflects documented field-failure rates and current insurance underwriting practice.
Cite as: HomeScore Lifespan Database 2026, HomeScore Research, myhomescore.app/data/lifespan-database (CC BY 4.0).
Run your home through the database
Use the System Lifespan Estimator to see exactly where your home sits on the curve and what's likely to fail next.