Balcony and Stair Reconstruction Engineering Plans

I need comprehensive engineering plans and structural calculations to obtain a permit for reconstructing balconies, stairs, and a landing on a 5-unit apartment building.

Requirements:
- Updated engineering plans
- Structural calculations
- Safety and compliance review

Ideal Skills and Experience:
- Experience with multi-unit residential buildings
- Knowledge of local building codes and permit requirements
- Ability to work with outdated architectural plans

Please provide samples of similar past work and a timeline for completion.