The Architectural Design Process

An in-depth exploration of the structured methodology architects use to solve complex design problems and deliver successful projects.

Core Phases of the Design Process

The standard sequential stages of an architectural project.

A Structured Methodology

The architectural design process is a systematic approach to problem-solving. It ensures that a project progresses logically from initial ideas to detailed construction plans. While iterative in practice, it typically follows standard phases defined by professional architectural organizations like the UAP (United Architects of the Philippines) and AIA.

Interactive Design Process

Phase 1: Pre-Design

Programming, site analysis, and feasibility studies.

Click on the phases to explore the typical architectural workflow.

Key Takeaways
  • The architectural design process is a structured methodology that guides a project from conception to completion.
  • It ensures that projects progress logically and that complex problems are solved systematically.

Post-Occupancy Evaluation (POE) Details

The critical phase of assessing a building's performance after occupancy.

Continuous Improvement

Post-Occupancy Evaluation (POE) is essential for learning and improving future designs.
  • Performance Metrics: Evaluating energy consumption, water usage, thermal comfort, indoor air quality, and overall functionality against the original design goals.
  • User Feedback: Gathering qualitative data through surveys and interviews to understand occupant satisfaction, identifying areas where the building succeeds or fails in meeting their needs.
  • Maintenance and Operations: Assessing the efficiency of building management systems, ease of maintenance, and the durability of materials under actual use conditions.
  • Iterative Design: Lessons learned from POE inform future projects, contributing to a cycle of continuous improvement in architectural practice.
Key Takeaways
  • POE is a critical tool for evaluating the actual performance of a building against its design intent.
  • It provides valuable feedback for improving both the specific building and future architectural designs.

Phase 1: Pre-Design (Programming)

Establishing the foundational parameters of the project.

Defining the Problem

Before any design work begins, the architect must thoroughly understand the client's needs, the site's constraints, and the project's feasibility.
Checklist:
  • Project Brief: A detailed document outlining the client's goals, functional requirements, and budget.
  • Site Analysis: Evaluating topography, climate, sun paths, wind directions, zoning laws, and context.
  • Feasibility Study: Assessing the economic and regulatory viability of the project.
  • Space Programming: Determining the required spaces, their sizes, and relationships.
Key Takeaways
  • Pre-Design focuses on defining the problem and setting the project parameters before any actual design begins.
  • Key outcomes include the project brief, site analysis, and space programming.

Phase 2: Schematic Design (SD)

Developing initial design concepts and spatial arrangements.

Conceptualization

During Schematic Design, the architect translates the programmatic requirements into initial spatial concepts.
  • Massing and Form: Exploring the basic shape and volume of the building.
  • Spatial Relationships: Arranging spaces based on adjacencies and flow.
  • Initial Floor Plans: Creating rough layouts showing room sizes and relationships.
  • Preliminary Aesthetics: Establishing the general visual direction and massing through sketches or simple 3D models.
Key Takeaways
  • Schematic Design establishes the general scale, layout, and appearance of the project.
  • It translates written requirements from Pre-Design into initial spatial concepts and massing.

Phase 3: Design Development (DD)

Refining the design and integrating building systems.

Refinement and Coordination

In this phase, the schematic design is detailed and solidified. The focus shifts from abstract concepts to specific materials and systems.
  • Material Selection: Choosing interior and exterior finishes, reviewing samples, and understanding material behaviors.
  • Structural Systems: Coordinating with structural engineers to define the framing or structural logic, determining column grids and load paths.
  • MEP Systems: Integrating mechanical, electrical, and plumbing systems into the design, ensuring proper space allocation for ducts and equipment.
  • Detailed Drawings: Producing more accurate floor plans, elevations, sections, and preliminary schedules.
Key Takeaways
  • Design Development solidifies the project's details, materials, and systems.
  • It requires heavy coordination with engineering disciplines (Structural, MEP).

Phase 4: Construction Documents (CD)

Producing the technical drawings and specifications for construction.

Technical Documentation

The Construction Documents phase produces the comprehensive set of instructions required to bid, obtain permits, and build the project.
Working Drawings: Highly detailed, dimensioned architectural, structural, and MEP drawings that illustrate precisely how the building is to be constructed. This includes details of connections, flashing, and assemblies.
Specifications (Specs): Written documents that detail the quality of materials, installation methods, and performance criteria for all components of the building, often following CSI MasterFormat.
Key Takeaways
  • Construction Documents provide the legally binding, detailed instructions necessary to build the project.
  • They consist of dimensioned working drawings and written specifications.

Phase 5: Bidding and Negotiation

Selecting a contractor and finalizing construction costs.

Procurement

The architect assists the client in obtaining competitive bids from contractors or negotiating a contract with a single builder. The goal is to select a qualified contractor who can execute the design within the budget and desired timeframe.
Key Takeaways
  • This phase involves procuring a qualified contractor to execute the construction documents.
  • The architect assists the client in evaluating bids and finalizing the construction contract.

Phase 6: Construction Administration (CA)

Overseeing the construction process to ensure design intent is met.

Project Oversight and Quality Control

During construction, the architect acts as the client's representative, ensuring that the contractor is building according to the Construction Documents. This is a critical phase where theoretical design meets physical reality.
  • Site Visits and Observation: Regular inspections to monitor the progress and quality of the work, and to determine if it is proceeding in accordance with the contract documents.
  • Submittal Review: Approving shop drawings, product data, and material samples submitted by the contractor before they are ordered or installed.
  • RFIs (Requests for Information): Formally clarifying design intent or addressing unforeseen site conditions (like unexpected soil types or hidden utilities in a renovation). The architect must respond to RFIs promptly to avoid delaying construction.
  • Change Orders: Processing modifications to the contract sum or time due to changes in scope, unforeseen conditions, or client requests.
  • Punch List: At substantial completion, the architect creates a list of remaining minor tasks or corrections the contractor must complete before final payment.
Key Takeaways
  • Construction Administration involves overseeing the physical realization of the design.
  • It includes site visits, reviewing submittals, answering RFIs, and processing Change Orders.

Phase 7: Post-Occupancy Evaluation (POE)

Assessing the building's performance after it is occupied.

Continuous Improvement

Although not always formally included in standard contracts, Post-Occupancy Evaluation is a critical phase for architects committed to quality.
  • Performance Assessment: Returning to the building months or years after completion to evaluate how well it performs structurally, environmentally (energy use), and functionally (how occupants use the space).
  • Feedback Loop: Gathering data from POE allows architects to identify design successes and flaws, creating a feedback loop that informs and improves future designs.
Key Takeaways
  • Post-Occupancy Evaluation assesses a building's actual performance and user satisfaction after move-in.
  • It provides a vital feedback loop for architects to continuously improve their design methodology.

Programming and Project Phases

The rigorous planning steps before and after design.

Space Programming

Before drawing begins, the architect must analyze the client's spatial needs.
  • Space Matrix: A grid analyzing the relationships and required adjacencies between different rooms (e.g., Kitchen must be adjacent to Dining).
  • Bubble Diagrams: Schematic drawings using circles (bubbles) to represent spaces and lines to represent relationships and circulation paths, translating the matrix into a preliminary spatial layout.

UAP Doc 202: Regular Design Services

The official phases of architectural design services as standardized by the UAP:
  1. Project Definition Phase: Defining requirements, consulting with the owner, and establishing conceptual framework.
  2. Schematic Design Phase: Preliminary plans, elevations, and initial statement of probable project construction cost (SPPCC).
  3. Design Development Phase: Refining the design, selecting materials, and coordinating with allied engineering disciplines.
  4. Contract Document Phase: Preparing detailed working drawings and technical specifications for bidding and construction.
  5. Bidding or Negotiation Phase: Assisting the owner in obtaining bids and awarding the construction contract.
  6. Construction Phase: Periodic site visits to verify that work is executed according to the contract documents.

Post-Occupancy Evaluation (POE)

An assessment of how well a building performs after it has been occupied. It involves surveying users to determine if the design met their functional, environmental, and psychological needs, providing valuable feedback for future projects.
Key Takeaways
  • Post-Occupancy Evaluation assesses a building's actual performance and user satisfaction after move-in.
  • It provides a vital feedback loop for architects to continuously improve their design methodology.

Project Delivery Methods

The contractual frameworks that define how a project is organized, financed, and built.

Traditional vs. Modern Delivery

The chosen delivery method fundamentally alters the architect's role and the timeline of the project.
  • Design-Bid-Build (DBB): The traditional and most common method. The owner holds two separate contracts: one with the Architect (who fully completes the design and documents) and one with the General Contractor (who bids on the completed documents and builds). It offers clear phases but can be slower and prone to adversarial relationships.
  • Design-Build (DB): The owner holds a single contract with a Design-Build entity (often a contractor employing an architect, or a joint venture). Design and construction phases overlap (fast-tracking), potentially saving time. The owner has a single point of responsibility, but may lose the architect as an independent advocate.
  • Construction Management (CM): The owner hires a Construction Manager early in the design phase to provide pre-construction services (estimating, scheduling, constructability reviews) alongside the architect. The CM may act as an advisor (CM Agency) or hold the trade contracts and guarantee the price (CM at Risk).
Key Takeaways
  • Design-Bid-Build separates design and construction, offering competitive bidding but extending timelines.
  • Alternative delivery methods like Design-Build and CM are increasingly used to accelerate schedules and integrate construction expertise earlier in the design process.

UAP SPP Document 202

The standard framework governing the Regular Design Services of an Architect.

Standard of Professional Practice (SPP) 202

In the Philippines, the scope of an architect's work during the design process is officially delineated by the UAP SPP Document 202: Regular Design Services.
This document formalizes the sequential phases (Project Definition, Schematic Design, Design Development, Contract Document, Bidding, and Construction Phase) and establishes the architect's responsibilities, the deliverables for each phase, and the standard compensation methods (e.g., percentage of project construction cost, multiple of direct personnel expenses). It serves as the legal and ethical basis for the Architect-Client agreement.
Key Takeaways
  • UAP SPP Document 202 officially codifies the Regular Design Services of an architect in the Philippines.
  • It provides the legal framework for the phases of design, deliverables, and professional compensation.

Feasibility Studies and Value Engineering

Evaluating project viability and optimizing cost without sacrificing quality.

Feasibility Studies

Conducted during or before the Pre-Design phase, a feasibility study determines if a project is legally, technically, and financially viable.
  • Market Analysis: Assessing demand for the proposed building type in the target location.
  • Site Analysis: Evaluating physical constraints, zoning regulations, and environmental impacts.
  • Financial Viability: Estimating construction costs, projected revenue (for commercial projects), and return on investment (ROI).

Value Engineering (VE)

Value Engineering is a systematic method to improve the "value" of goods or products and services by using an examination of function.
  • Objective: To achieve the required building functions at the lowest total cost (capital, operating, and maintenance) without reducing quality, safety, or aesthetics.
  • Process: Often involves a multidisciplinary team reviewing the design to identify alternative materials, systems, or construction methods that offer better value.
  • Timing: Most effective when applied early in the design process (Schematic Design or Design Development) before major decisions are locked in.
Key Takeaways
  • Feasibility studies mitigate risk by ensuring a project makes sense before significant capital is committed.
  • Value engineering is not simply cost-cutting; it is a strategic optimization of function versus cost.
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