What factors that affect the design?

10 Key factors:

Client
Clear project objective which includes the finalized ideas and the cost effectiveness. Basically it means making decisions as a team.

Program
The functions of the buildings and its limitations such that the building fits what it was suppose to be there for.

Community Concerns
The architect must change the designs to fit the community, the residents etc.

Codes and Regulations
All the buildings codes that they need to follow in order that it is earthquake proof and how tall the building can be.

Context and Climate
Take the weather and nature in considerations. Temperature, humidity etc.

Site
The surroundings of the building. Geographical features, the space available. Water drainage.

Building technology
Technology of building stuff.

Sustainability
How long it can last itself in society and eco system. Lower environmental impacts.

Cost
We have to limit the cost of designing the building due to the budget. Most of the time the budgets are fixed and we cannot exceed the budget.

Schedule
They may be constraints when it comes to the time. This is because the building must be build at a certain time. Therefore it must be kept to schedule.