WAYS TO STUDY AND DESIGN | EX ANTE PERFORMANCE EVALUATION OF HOUSING by Andre Thomsen

1. WAYS TO STUDY AND DESIGN |EX ANTEPERFORMANCE EVALUATION OF HOUSINGby Andre Thomsen • Feasibility of the programme. • Feasibility of the draft. Performance checks in the design process • Optimization of the final plan. E.M.U.’ 05 | André Rosado

2. WAYS TO STUDY AND DESIGN |EX ANTEPERFORMANCE EVALUATION OF HOUSINGby Andre Thomsen • POE – post occupancy evaluation • User enquiry surveys • Various kinds of benchmarking Measuring performance - Mostly quality/cost ratings • Measuring • functional quality • - always an irresolute • approximation to reality WWS – Dutch residential assessment system E.M.U.’ 05 | André Rosado

3. Residential • Consumer’s test • (-) points: • valuation and weighting • ≠ occupant preferences • total score calculation • no relation with WWS WAYS TO STUDY AND DESIGN |EX ANTEPERFORMANCE EVALUATION OF HOUSINGby Andre Thomsen ≠ preferences of occupants WWS (Woning Waardering Stelsel) Dutch residential assessment system Determine the quality of a domicile (establish a reasonable rent) Quality = Sum of points of the different quality aspects E.M.U.’ 05 | André Rosado • extract from the WWS

4. Stage 1 - There are no standard preferences of the occupant: They depend on family composition, age, income perspective, dependence on care and lifestyle. • Stage 2 – development of the test: • - Extensive analysis of methodologies (criteria and test value) • Conditions and boundaries for domestic activities • Weighting factors based on occupants preferences • Stage 3 – housing quality test • How to determine generally valid weights of the test? Complexity of a accurate method preferences <-> object properties VS WAYS TO STUDY AND DESIGN |EX ANTEPERFORMANCE EVALUATION OF HOUSINGby Andre Thomsen • New study • (-) points: • no relation between • preferences of occupants (subjective component) • and • physical performance properties of homes (objective component) (-) points: Test is too complicated Results are insufficiently useful to determine performance E.M.U.’ 05 | André Rosado

5. Measuring costs • building, maintenance, energy and management – Life-cycle • Quality/cost assessment • Routing of project development • MARKET ORIENTED SYSTEMS • - Market indicators are soft and fluctuating WAYS TO STUDY AND DESIGN |EX ANTEPERFORMANCE EVALUATION OF HOUSINGby Andre Thomsen • Conditions and Restrictions • Initial Goals (use of tools): • a. Rational basis for decisions; • b. Efficient use of resources; • c. Transparency of effects; • d. Open democratic control; • e. Use of professional skills. A good housing design has to satisfy the programmatic conditions that are verifiably essential to the consumer. EX-ante performance evaluation of dwellings implies reduction of doubts. Design and decision tools can help to diminish uncertainty and sharpen awareness of risky elements. But even the smartest tools cannot give a guaranteed solution performing well. E.M.U.’ 05 | André Rosado

6. WAYS TO STUDY AND DESIGN |EX ANTEPERFORMANCE EVALUATION OF HOUSINGby Andre Thomsen (re)statements A good housing design has to satisfy the programmatic conditions that are verifiably essential to the consumer. Conditions essential to the consumer can be objectively described in a programme. Any housing design satisfying the programmatic conditions that are satisfying to the consumer is a good one. E.M.U.’ 05 | André Rosado