Before commencing building construction, builders or developers are typically required to prepare and submit several types of documentation. These documents ensure compliance with regulations, establish legal obligations, and facilitate effective planning and execution of the construction project. The specific documentation may vary depending on the jurisdiction and the nature of the project, but here are some common types of documentation required:
1. Building Permits: 
Builders or developers must obtain building permits from the relevant local authorities before commencing construction. The permit application typically includes detailed plans, specifications, and other necessary documents that demonstrate compliance with building codes, zoning regulations, and other applicable laws.

2. Architectural Drawings:
 These are comprehensive drawings prepared by architects or architectural firms. They include site plans, floor plans, elevation drawings, and other detailed architectural designs that outline the layout, dimensions, and structural elements of the proposed building.

3. Structural Engineering Drawings: 
Prepared by structural engineers, these drawings provide detailed information about the structural components and systems of the building. They include calculations, specifications, and drawings for foundations, beams, columns, slabs, and other structural elements.

4. Site Survey and Geotechnical Reports: 
A site survey provides accurate measurements and boundary information of the construction site. Geotechnical reports assess the soil conditions, stability, and suitability for construction, helping engineers design appropriate foundation systems.

5. Environmental Impact Assessment (EIA): 
In certain cases, builders or developers may be required to conduct an EIA. This assessment evaluates the potential environmental impact of the construction project and proposes mitigation measures to minimize adverse effects on the environment.

6. Construction Contracts and Agreements: 
Builders or developers must have legally binding contracts with various parties involved in the project, such as contractors, subcontractors, suppliers, and consultants. These contracts outline the scope of work, responsibilities, timelines, payment terms, and dispute resolution mechanisms.

7. Insurance Policies: 
Builders or developers typically secure insurance coverage, such as general liability insurance, construction risk insurance, and workers' compensation insurance. These policies protect against potential liabilities, property damage, and injuries during the construction process.

8. Construction Schedule and Project Plan: 
A detailed construction schedule outlines the sequence of activities, timelines, and milestones for the project. It helps in coordinating resources, managing subcontractors, and ensuring efficient project execution. A project plan provides an overview of the project's objectives, strategies, and management approach.

9. Financial Documentation: 
Builders or developers may need to provide financial documentation, including cost estimates, budget plans, and evidence of financial resources or financing arrangements to demonstrate their ability to fund the construction project.

10. Health and Safety Plans: 
Builders or developers are required to develop comprehensive health and safety plans that outline measures to ensure a safe working environment, minimize risks, and comply with occupational health and safety regulations. These plans typically include hazard assessments, emergency procedures, and safety training protocols.

11. Regulatory Approvals and Certifications: 
Depending on the jurisdiction and the project's characteristics, builders or developers may need to obtain additional approvals and certifications. These may include fire safety clearances, energy efficiency certifications, accessibility compliance certificates, and other regulatory requirements.

It is important to note that the specific documentation requirements may vary significantly depending on the location, project scope, and applicable regulations. Builders or developers should consult with local authorities and engage qualified professionals, such as architects and engineers, to ensure compliance with all necessary documentation before commencing construction.