The Construction Planning and Design Process

Steps in Construction Planning and Design

Construction planning and design is a process that serves as a roadmap for the construction of a custom new home, home addition, ADU, or major home remodel.

The process involves defining the project vision, drafting the rough design, conducting a feasibility assessment, determining the budget, projecting the timeline, finalizing the design, selecting materials, and obtaining necessary permits.

To move smoothly through the process, it is beneficial for homeowners to collaborate with an experienced, full-service “Design-Build” contractor that can serve as a single point of contact to manage the project through the planning, design, and construction phases.

The potential benefits include minimizing delays, change orders, cost overruns, and quality issues that often result from miscommunication or poor planning when working with a “construction only” contractor.

In this blog, we provide an overview of eight key steps in the planning and design process:

 

1. Initial Consultation and Vision Setting

The initial step in the process of constructing your new custom home, addition, ADU, or major remodel, is to meet with your contractor to discuss your vision for the design, budget, and timeline. This conversation sets the foundation for a collaborative process that is focused on achieving your vision efficiently and within your established parameters.

 

2. Drafting of the Schematic Design

The next step is to further clarify and refine your overall goals, project scope, and design direction, including visualizing both the exterior and interior elements of the structure and drafting a schematic design that aligns with your vision and requirements. This includes:

• An exterior plan that illustrates the proposed orientation of the new building or addition, considering natural light, features of the landscape, existing vegetation (garden, hedges, large trees), existing water features (stream, pond, etc.), access route (driveway), and location of neighboring structures, and
• An interior plan that outlines the floor plan, taking into consideration room location, doors, windows, traffic flow, daily routines, storage, and other details.

 

3. Feasibility Assessment

To determine if the project you envision is physically, legally, and financially viable, your contractor will conduct a feasibility assessment to investigate any of the following factors that affect your project:

• Local zoning regulations, land use restrictions, height restrictions and deed restrictions
• Setback requirements (minimum allowable distances between your structure and property lines, existing structures, wells, curbs, center of the street, bodies of water, and other features)
• Easements (allowances for electric, cable, and telephone companies, etc., to place their equipment on your land, even if the equipment serves your neighbors’ homes as well as your home)
• Utility access, placement, and routing options for water, electricity, and sewer
• Vegetation restrictions (required permission for removal of certain trees or other vegetation)
• Soil quality and depth, water table depth, and drainage patterns (factors that guide site prep, influence the design of the foundation, and affect long-term structural performance)
• Environmental considerations (including mandated protection from flooding or fires)
• Access routes for construction vehicles and material delivery

Conducting a feasibility assessment before architectural plans are finalized mitigates risk, sets realistic expectations, avoids costly delays and mistakes, facilitates prudent financial planning, streamlines the planning and design process, and ensures that the project is physically, legally, and financially viable.

 

4. Budget Planning

As the project design takes shape, you and your contractor can estimate the budget by considering costs such as the following that are commonly incurred in new construction, addition, ADU, and major remodel projects:

• Design draft drawings and final construction plans
• Feasibility assessment tests
• Permits
• Site preparation
• Connection of utilities (phone lines, electricity, water mains, sewage)
• Labor and rough construction materials
• Landscaping labor and materials
• Items of personal choice (fixtures, flooring, cabinets, appliances, etc.)
• Contingency fund of 15% to 20% to cover unexpected costs

By drafting a budget, you can determine whether to expand or contract the project scope. If the projected expenses exceed your financial resources, you might decide to seek additional funding or scale back certain aspects of the design or construction. Conversely, if your budget permits, you have the flexibility to expand the project scope, adding features or enhancements as desired.

 

5. Timeline Projection

Once the project scope is clear, your contractor will be able to estimate a timeline.

In Santa Clara and San Mateo counties, a new single-family custom home construction project typically takes 10 to 12 months or more for planning, design, and permitting, and 10 to 12 months or more for construction, finish work, inspections, and handover.

Projects such as a custom addition, ADU, or major home remodel can take 6 to 8 months pre-construction, and 6 to 8 months or more from construction to completion.

Among the most common factors affecting the timeline are weather conditions, permitting delays, material shortages, and decision changes by homeowners.

 

6. Finalization of the Design

In the final design stage, the schematic design is translated into a set of construction documents that include detailed, scaled drawings, blueprints, and technical specifications such as the following:

• Architectural Drawings showing the size, shape, and layout of the building, including site plans, floor plans, and elevations
• Written Specifications about materials, products, installation techniques, and quality standards
• Structural Drawings showing the load-bearing elements of the structure, materials and other details for foundations, steelwork, and concrete
• MEP System Plans detailing the mechanical, electrical, and plumbing systems
• Landscape Drawings showing measurements, material specifications, and structural details for hardscapes, drainage, and planting

These “permit ready” documents are then submitted to local building authorities to verify compliance with building codes and zoning laws and to request construction permits. After making any required modifications and receiving approval, these documents are used as a guide to the construction of your project.

 

7. Material Selection and Procurement Planning

With careful planning and attention to details of style, size, color, and texture, you can balance aesthetics and functionality to create exterior and interior spaces that are functional, comfortable, and visually cohesive.

To minimize delays and cost overruns, it is advisable that you make final selections and place orders for fixtures, hardware, appliances, custom cabinets, and other materials before construction begins.

 

8. Permitting

The final stage in the planning and design process is permitting. To ensure compliance with safety rules, environmental regulations, and local zoning and building codes in the San Francisco Bay Area, a construction or remodeling project might require several of the following permits.

• Building Permit: A building permit is required for construction of a new build, addition, expansion, or ADU, and sometimes for whole-house remodeling.
• Zoning Permit: Local city departments enforce strict zoning, height, setback, and land-use regulations that usually require approval before work begins.
• Grading Permit: A grading permit is required for most projects that alter drainage, change site slopes, build large retaining walls, work during the rainy season (October 1st – April 30th), or move, import, or remove soil.
• Erosion Control Permit: An erosion control permit is strictly required for construction and development projects in the Bay Area, particularly during the rainy season.
• Demolition Permit: A demolition permit is almost always required for the partial or complete removal of a structure, including removal of exterior walls, foundations, or utility lines.
• Electrical: An electrical permit is needed to install temporary power and for most electrical work, including panel upgrades, re-wiring, new wiring, extensions, and additions to existing systems.
• Water/Sewer Connection: A sewer and water connection permit is mandatory for new connections, repairs, or upgrades to ensure compliance with local sanitation and plumbing codes and the work usually requires inspections from city public works or local sanitary districts.
• Plumbing: A plumbing permit is required for most plumbing connection work, including installing, altering, or repairing pipes, fixtures, or water heaters.
• Mechanical: A mechanical permit is generally required for installing, altering, or replacing HVAC systems, boilers, or other mechanical equipment. Permits ensure compliance with the California Mechanical Code to avoid fines or insurance issues.
• Road / Driveway: A road and/or driveway permit might be necessary if you plan to alter driveways or create street access.
• Encroachment Permits: An encroachment permit is required for any work in the public right-of-way (e.g., placing dumpsters, cranes, or scaffolding on the street/sidewalk).
• Tree Removal: A tree removal permit is frequently required, as most cities have local ordinances protecting specific species, sizes, or trees located in public rights-of-way, with non-compliance resulting in heavy fines.

 

Guidance Through Every Step of Your Project

As you embark on your custom new home, home addition, ADU, or major home remodel project, you can save time, money, and unnecessary stress by collaborating with an experienced, full-service Design-Build construction contractor such as Bay Area Design and Construction.

Our team is ready to help you navigate the planning and design process outlined above and the construction process that follows, ensuring that your vision is realized smoothly and efficiently.

We serve as a single point of contact, recognizing the importance of maintaining open communication, adhering to schedules, managing expenses carefully, and delivering top-quality workmanship.

We are dedicated to supporting you at every stage to help you create the home you have always imagined. Please contact us to discuss how we can collaborate with you, or explore our full range of services to see everything we offer.