Please read and review code requirements to see that your detectors are on par with the codes before scheduling an inspection. Below are some of the requirements for residential smoke and CO detectors. An extra $15 fee is added on every time a house fails the first inspection and must be inspected again.
Smoke Detector & CO Requirements
Residential homes must have a CO detector and Smoke detector on every level of the home, including habitable areas of basements or attics
All detectors must be less then 10 years old
All new battery operated smoke detectors must have a 10 year sealed, non-rechargeable, non-replicable battery
You must have a CO detector in basement even if it is not habitable and it must be placed directly at the bottom of the stairs
On levels with sleeping areas, a CO detector must be within 10 feet of every bedroom
Combination detectors are ok to us
All combination detectors must have simulated voice and tone alarms that clearly distinguish between a smoke and CO emergency
If any level of the house is more than 1200 square feet, there must be more than 1 smoke and 1 CO detector
The numbers for the street address must be on the building
These are just a few of the smoke and CO detector requirements that are common reasons for failing inspections. Adhering to all of these codes does not necessarily mean your home will pass inspection.