What is the passing grade for the PRC Interior Designer Licensure Examination?

Under Section 17 of Republic Act No. 10350 (Philippine Interior Design Act of 2012), a candidate must obtain a weighted general average of at least seventy percent (70%) to be qualified as having passed the Board Licensure Examination for Interior Designers.

What subjects are covered in the Interior Designer board exam?

The examination is held over three days and covers seven subjects: Interior Design (40%), Furniture Design and Construction (15%), Materials of Design and Decoration (10%), History of Arts and Interior Design (10%), Interior Construction and Utilities (10%), Professional Practice and Ethics (10%), and Color Theory (5%).

What law regulates the practice of interior design in the Philippines?

The practice of interior design in the Philippines is governed by Republic Act No. 10350, also known as the Philippine Interior Design Act of 2012, which repealed the previous law (RA 8534) and established the Professional Regulatory Board of Interior Design under the PRC.

What is the project guarantee required under RA 10350?

Under RA 10350, a licensed interior designer assumes full civil liability for their design work and must provide a one-year guarantee for their projects from the time of final turnover to the client. Any defects due to faulty design must be repaired at the designer's expense within 45 days of a formal complaint.

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2026 Statistics

Key Facts: PRC IDLE Exam

Examination Subjects

Board of Interior Design

70%

Passing Weighted Average

RA 10350

1 Year

Project Guarantee Period

RA 10350

40%

Interior Design Weight

Board of Interior Design

RA 10350

Governing Republic Act

PRC

3 Days

Licensure Exam Duration

PRC

The PRC Interior Designer Licensure Examination is the Philippine board exam for interior designer registration under RA 10350. It spans three days and tests seven weighted subjects: Interior Design (40%), Furniture Design & Construction (15%), Materials (10%), History (10%), Construction & Utilities (10%), Professional Practice (10%), and Color Theory (5%). A candidate must achieve a 70% weighted general average to pass. Key areas of focus include space planning, furniture joinery, finishes, global/Filipino design history, PD 1096, BP 344, and RA 9514.

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Try these sample questions to test your PRC IDLE exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under Batas Pambansa (BP) 344, the Accessibility Law of the Philippines, what is the minimum required clear width for accessible door openings?

A.700 mm

B.800 mm

C.900 mm

D.1000 mm

Explanation: Under BP 344, door openings must have a minimum clear width of 800 mm (measured between the face of the door and the stop when open at 90 degrees) to allow standard wheelchair passage.

2What is the maximum recommended total perimeter distance for a residential kitchen work triangle?

A.6.0 meters

B.7.0 meters

C.9.0 meters

D.12.0 meters

Explanation: To ensure efficiency in a residential kitchen layout, the sum of the three legs of the work triangle (connecting the sink, range, and refrigerator) should be between 4.0 meters (13 feet) and 9.0 meters (26 feet).

3According to BP 344, what is the required mounting height range for accessible grab bars in a toilet stall?

A.600 mm to 700 mm

B.700 mm to 800 mm

C.800 mm to 900 mm

D.900 mm to 1000 mm

Explanation: BP 344 specifies that horizontal grab bars in accessible toilet rooms must be mounted between 800 mm and 900 mm above the finished floor level to provide optimal leverage for wheelchair users transferring to the toilet.

4What is the standard ergonomic desk height for a seated office workstation in professional space planning?

A.680 mm

B.750 mm

C.820 mm

D.900 mm

Explanation: The standard ergonomic desk height for a seated office worker ranges between 740 mm and 760 mm (nominally 750 mm). This height accommodates the anthropometric average of users when paired with an adjustable chair.

5Under Chapter 8 of the National Building Code of the Philippines (PD 1096), what is the minimum ceiling height for a habitable room on the ground floor with natural ventilation?

A.2.10 meters

B.2.40 meters

C.2.70 meters

D.3.00 meters

Explanation: Under PD 1096, habitable rooms with natural ventilation must have a minimum ceiling height of 2.70 meters (9 feet) on the ground floor. For multi-storey buildings, subsequent storeys may have a minimum ceiling height of 2.40 meters.

6In dining room space planning, what is the minimum clearance required behind a dining table to allow a seated person to push back their chair and permit easy passage behind them?

A.600 mm

B.750 mm

C.900 mm

D.1200 mm

Explanation: A clearance of 1200 mm (4 feet) behind a dining table allows a seated diner to push back their chair comfortably while leaving enough space for another person to walk behind them.

7What type of retail store layout organizes merchandise fixtures in a grid-like structure, maximizing shelf space but offering low visual exploration?

A.Free-flow layout

B.Racetrack (Loop) layout

C.Grid layout

D.Spine layout

Explanation: A grid layout organizes fixtures and aisles in a structured, parallel pattern (common in supermarkets). It maximizes shelf capacity and simplifies navigation, though it is visually repetitive.

8In contemporary office planning, which concept uses unassigned desks that employees reserve for the day to optimize office square footage?

A.Activity-based working

B.Hot-desking (Hoteling)

C.Open-plan bullpen

D.Co-working zones

Explanation: Hot-desking (or hoteling) involves employees using any available unassigned desk rather than having a fixed personal desk, which reduces real estate costs for hybrid workforces.

9In hospitality and bar design, what is the standard height range for a bar counter?

A.850 mm to 900 mm

B.900 mm to 950 mm

C.1000 mm to 1050 mm

D.1050 mm to 1100 mm

Explanation: A standard bar counter is designed to be comfortable for standing patrons or users seated on high bar stools, requiring a height of 1050 mm to 1100 mm (42 to 43 inches).

10What is the recommended average illuminance level (in Lux) for general office tasks, such as reading and typing at a computer workstation, under Philippine standards?

A.150 Lux

B.300 to 500 Lux

C.750 Lux

D.1000 Lux

Explanation: General office work, including computer usage, data entry, and reading printed documents, requires an average illuminance level of 300 to 500 Lux to ensure comfort and reduce eye strain.

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