Identifying the historic building's character-defining
spaces, features, and finishes so that code-required
work will not result in their damage or loss.
Complying with health and safety codes, including
seismic code requirements, in such a manner that character-defining
spaces, features, and finishes are preserved.
Removing toxic building materials only after thorough
testing has been conducted and only after less invasive
abatement methods have been shown to be inadequate.
Deteriorating operable windows often contribute
to lead dust in a house. In homes with small children,
floors and other surfaces should be kept as clean
as possible to avoid lead contamination.
Providing workers with appropriate personal protective
equipment for hazards found in the worksite.
Working with local code officials to investigate
systems, methods, or devices of equivalent or superior
effectiveness and safety to those prescribed by code
so that unnecessary alterations can be avoided.
Upgrading historic stairways and elevators to meet
health and safety codes in a manner that assures their
preservation, i.e., so that they are not damaged or
Installing sensitively designed fire suppression
systems, such as sprinkler systems that result in retention
of historic features and finishes.
Applying fire-retardant coatings, such as intumescent
paints, which expand during fire to add thermal protection
Adding a new stairway or elevator to meet health
and safety codes in a manner that preserves adjacent
character-defining features and spaces.
Undertaking code-required alterations to a building
or site before identifying those spaces, features, or
finishes which are character-defining and must therefore
Altering, damaging, or destroying character-defining
spaces, features, and finishes while making modifications
to a building or site to comply with safety codes.
Destroying historic interior features and finishes
without careful testing and without considering less
invasive abatement methods.
Removing unhealthful building materials without regard
to personal and environmental safety.
Making changes to historic buildings without first
exploring equivalent health and safety systems, methods,
or devices that may be less damaging to historic spaces,
features, and finishes.
Damaging or obscuring historic stairways and elevators
or altering adjacent spaces in the process of doing
work to meet code requirements.
Covering character-defining wood features with fire-resistant
sheathing which results in altering their visual appearance.
Using fire-retardant coatings if they damage or obscure
Radically changing, damaging, or destroying character-defining
spaces, features, or finishes when adding a new code-required
stairway or elevator.