Frequently Asked Questions

Roof load analysis evaluates proposed loads and whether the relevant structural members and connections can support them. It considers the weight and location of equipment and how loads transfer into the roof framing.

A roof load-capacity evaluation assesses the existing roof framing and supports against proposed equipment or other specified roof loads to determine whether the structure can support the work.

A replacement rooftop AC unit can change the operating weight, support locations, or anchorage conditions. Even a unit that is lighter can shift loads or change how the equipment is attached, which a permit reviewer may want evaluated.

A lighter unit does not automatically remove the need for review. Support points, curb conditions, anchorage, and how loads transfer into the structure can all differ. The specifics of your project determine what is required.

No. An engineering letter or stamped calculation package supports permit review. The permitting authority determines whether the submission satisfies its requirements and grants the permit.

That depends on your project and your permitting authority's requirements. After reviewing the equipment and structural information, Ian can recommend the appropriate deliverable within the agreed scope.

Project address, existing and proposed equipment specifications, operating weights if available, roof and equipment photographs, existing structural drawings if available, proposed unit location and support details, curb or adapter information, and any permit correction notice.

Sometimes. Many evaluations can be completed from submitted documents, but a site visit may be needed if existing conditions are unclear. That determination is made after scope review.

If the proposed work requires additional support, Ian can provide engineering details for strengthening or modifying the framing within the agreed scope. The work itself is performed by your contractor.

Yes. Curb, adapter, and support review and equipment anchorage evaluation are offered services, including wind and seismic considerations where relevant.

Yes. Review of structural comments from the permitting authority and preparation of an engineering response within the agreed scope is an offered service.

Cost depends on the project scope and complexity. Fee is determined after review of the project information and an agreed scope.

Turnaround depends on project scope, document completeness, and current availability. Ian will discuss timing during scope review.

You can request the earliest available review. Urgent requests are flagged for staff review, but timing remains subject to project review and availability.

Yes. Each property is tracked as a separate project so repeat submissions do not overwrite earlier projects. Use a separate intake for each property.

The permitting authority is determined by the project's actual location — a mailing-city name does not necessarily identify the jurisdiction. Each city page lists the verified local building division, and you should confirm jurisdiction for your address.

Yes. Beam and header design, load-bearing wall changes, additions and remodeling, framing modifications, foundation evaluations, seismic retrofits, commercial tenant improvements, and damage assessments can be submitted as project inquiries pending confirmation of the service offering.