Renovation or abatement
Replace a window and the EPA renovation rule applies; it contains dust and leaves the hazard. Remove the hazard permanently and Title 17 abatement applies: certified Supervisor and Workers, written plan, Form 8551 notice, clearance. The same window can be either job.
Hayward permit and historic checks
The City handout adds that permit applications for window work on buildings at least 50 years old, or in a historic district, may be subject to the Historic Preservation Ordinance, and it advises calling the Planning Division before applying. Call the Planning Division before applying.
What affects the cost
The price of window and door work depends on the count, restoring versus replacing, the size and style of new units, trim removed with them and renovation versus abatement. Permit fees follow job value, and an older house may need a historic check.