Things to do before starting to develop a project

Coding Standards
Commenting Standards
Threat Modeling
Exception/Logging
Authorization, Authentication and Auditing
concurrency avoid policy
Fesibility to existing components
External interface requirements
Knowedle sharing platform
Interface establishment code
Deployment Stretegies
Components Defination (Library Infrastructure)
Code Structure
Caching Policy
Recursive code paterns
caching policy
Assumptions related to Hardware, Software etc
GUI Controls
Scaling stratigy
Technology selection
secondary technologies Ajax etc
GUI Expectations
Reporting
Architecture Tiers etc...
Data Container for traveling data between tiers
Data Base independence
Front end independence
Development Language