--- title: How the “Law of Fives” can reduce long-term deferred maintenance. description: "W.R. deSitter's \"Law of Fives\" states that the cost of maintaining a building increases by a factor of five for every decade that goes by without proper maintenance. This means that if a building is not properly maintained for 10 years, it will cost five times as much to maintain as it would have if it had been properly maintained during that time." image: https://t2d2.ai/hubfs/IMG_2720.jpg --- [![T2D2 Logo](https://t2d2.ai/hs-fs/hubfs/Logo%20-%20Icon%20Color.png?width=60&height=60&name=Logo%20-%20Icon%20Color.png)](https://t2d2.ai) - [How It Works](https://t2d2.ai/inspection-cloud) - [Inspection Cloud](https://t2d2.ai/inspection-cloud) - [AI Condition Detector](https://t2d2.ai/damage-detector) - [Drone Inspection Imagery](https://t2d2.ai/features/drones) - [Mobile Inspector](https://t2d2.ai/features/mobile) - [Photogrammetry](https://t2d2.ai/features/photogrammetry) - [Drawings](https://t2d2.ai/features/drawings) - [360° Photos](https://t2d2.ai/features/360degreephotos) - [Thermal Imaging](https://t2d2.ai/features/thermalimaging) - [Privacy Anonymization](https://t2d2.ai/features/anonymization) - [CAD/BIM Connector](https://t2d2.ai/features/cad) - [3D Model Viewer](https://t2d2.ai/features/3dmodel) - Industry - [Owners](https://t2d2.ai/buildings) - [Engineers and Architects](https://t2d2.ai/aec) - [Drone Pilots](https://t2d2.ai/drones) - [Insurance](https://iconiqinsurance.com/) - [Pricing](https://t2d2.ai/pricing) - [Plans](https://t2d2.ai/pricing) - [ROI Calculators](https://t2d2.ai/roi) - Resource Center - [Blog](https://t2d2.ai/blog) - [Find a Drone Pilot](https://t2d2.ai/find-a-pilot) - [Join the T2D2 Drone Pilot Network](https://t2d2.ai/drones) - [Contact Us](https://t2d2.ai/contact) - [Schedule a Demo](https://t2d2.ai/demo) - [About](https://t2d2.ai/about) [LOG IN](https://t2d2.ai/login) [SIGN UP](https://app.t2d2.ai/auth/register) facades # How the “Law of Fives” can reduce long-term deferred maintenance. W.R. deSitter's "Law of Fives" states that the cost of maintaining a building increases by a factor of five for every decade that goes by without proper maintenance. This means that if a building is not properly maintained for 10 years, it will cost five times as much to maintain as it would have if it had been properly maintained during that time. [Jonathan Ehrlich](https://t2d2.ai/blog/author/jonathan-ehrlich) Jan 9, 2023 --- W.R. deSitter's "Law of Fives" states that the cost of maintaining a building increases by a factor of five for every decade that goes by without proper maintenance. This means that if a building is not properly maintained for 10 years, it will cost five times as much to maintain as it would have if it had been properly maintained during that time. This is because deferred maintenance often leads to larger and more costly problems down the road. For example, if a small leak in a roof is not repaired, it can lead to more extensive water damage over time. This damage may not be immediately visible, but it can lead to costly repairs in the future. Similarly, if the HVAC system in a building is not regularly maintained, it can lead to more frequent breakdowns and higher energy costs. The "Law of Fives" highlights the importance of early intervention in building maintenance. By addressing small issues before they become larger problems, building owners can save money in the long run. This is especially important for buildings with limited budgets, as the cost of deferred maintenance can quickly become overwhelming. Early intervention in building maintenance is also important for the safety of building occupants. If a problem is not addressed in a timely manner, it can lead to hazardous conditions, such as the risk of a fire or structural collapse. By addressing maintenance issues promptly, building owners can help ensure the safety of their occupants. This supports the idea that early intervention in building maintenance can help reduce long-term deferred maintenance costs. By addressing small issues before they become larger problems, building owners can save money and ensure the safety of their occupants. [facades](https://t2d2.ai/blog/tag/facades) [buildings](https://t2d2.ai/blog/tag/buildings) ## Similar posts inspection ### [The Signal Through The Noise: Geospatial Data Overload](https://t2d2.ai/blog/the-signal-through-the-noise-geospatial-data-overload) How to best manage the overload of different types of data in engineering, architecture and building management. 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