THE 1% RULE
When you consider the life cycle of every component of a house, a reasonable annual estimate of the cost of normal maintenance is 1% of the value of the house. One year you may replace the furnace; a few years down the road you may re-surface the roof. Throw in the odd unexpected repair in between and you average 1% per year. It’s incredible but this rule is not far off, both for very expensive and very inexpensive houses.
If you strip away the cosmetics, a house is made up of the structure, roof, exterior envelope and the “systems” of the house. The “systems” are things like heating, plumbing, electrical and cooling.
All components and systems eventually wear out. Fortunately, they don’t all wear out at the same time. Different components have different life cycles. Houses tend to settle into what you might call a “normal maintenance pattern”.
Waht's the Message Here?
A homebuyer should arrive at the home inspection with realistic expectations. If you are buying a 12-15 year old home, let’s face it, you may need a new roof covering. If you are buying a 60 year old home, you may have to update some plumbing. Don’t let this scare you away from a perfectly good home.
How Long Does It Last?
Here is a list of typical lifespans of the most common components of the home. Please keep in mind that there will be exceptions in every category.
Contents of this site Copyright 2008 Carson, Dunlop & Associates Ltd. All rights reserved.
No text or graphical material may be copied from this site without the express written permission of Carson, Dunlop & Associates Ltd. Line drawings are from the Carson Dunlop Home Inspection Training Program and Home Inspection Software Tool - Horizon