- Which RES This Cheat Sheet Covers
- The Master Examination at a Glance
- Eligibility Snapshot: Who Gets to Sit
- The Three Project Routes Before the Exam
- The Six Core Subject Areas
- Fees and Retake Rules in One Place
- Exam-Day Rules: What You Can and Cannot Bring
- After You Pass: Recertification Numbers
- Sequencing Your Review by Subject
- Fact Traps That Cost Candidates Points
- Frequently Asked Questions
- The RES Master Examination is 50 one-point multiple-choice questions in four hours, closed book, with a 70% passing requirement.
- The case-study exam has 100 questions and three attempts; never confuse those figures with the Master exam.
- Master retakes: wait 30 days after the first failure, then 180 days before attempts following the second failure.
- Six curriculum subjects drive preparation, but IAAO publishes no official domain percentages for the Master exam.
Which RES This Cheat Sheet Covers
This page covers one credential only: the Residential Evaluation Specialist (RES) designation from the International Association of Assessing Officers (IAAO). The final hurdle is the RES Master Examination. It is not Singapore's Real Estate Salesperson examination, and it is not the separate residential case-study examination or the practice case used in Workshop 851. Several credentials abbreviate to "RES," so confirm you are studying IAAO material before you memorize a single number.
If you are brand new to the credential, the explainers at What Is RES? and What Does RES Stand For? give the background. This cheat sheet assumes you are already on the path and want the must-know facts in one place.
The Master Examination at a Glance
IAAO's published proctoring procedure sets the format. Memorize these four facts first, because everything else in your plan hangs on them.
| Item | RES Master Examination |
|---|---|
| Questions | 50 multiple-choice, one point each |
| Time | Four hours |
| Passing requirement | 70% (IAAO Procedural Rules) |
| Reference materials | None; closed book, no notes |
| Delivery | Paper materials with an IAAO-approved proctor |
At 70% of 50 one-point questions, the arithmetic is simple: you need 35 correct answers. Four hours for 50 questions works out to roughly 4.8 minutes per question, which is generous even for calculation-heavy items. Time pressure is rarely the issue; accuracy on valuation math and recall of standards language is. For a deeper look at the threshold, see RES Passing Score 2026: Exactly What You Need to Pass, and for candidate-difficulty context, How Hard Is the RES Exam?
Eligibility Snapshot: Who Gets to Sit
Candidates need all of the following: good-standing RES candidacy, at least three years of residential-property appraisal experience, the required education, an approved project route, and then the final Master Examination. One timing detail surprises people: the experience affidavit is submitted after passing and before conferral of the designation, not before the exam.
Education Requirement for Candidacies Beginning January 1, 2015 or Later
You satisfy education with an associate degree or higher, or with high-school completion (or equivalent) plus one approved alternative:
- At least 21 approved semester hours, or eligible CLEP equivalents, with grades of C or higher
- Seven years of verified appraisal or assessment-administration experience
- An approved 70-point combination of education and experience
For the full qualification walk-through, see RES Requirements 2026: Eligibility, Prerequisites & How to Qualify.
The Three Project Routes Before the Exam
Before the Master Examination, you must complete one of three approved routes:
- A qualifying residential narrative appraisal
- A computer-assisted residential-group appraisal narrative
- The separate eight-hour residential case-study examination plus Course 201 Appraisal of Land
Source Conflict Worth Knowing
The designation webpage and promotional pathway describe the individual narrative as a single-family property. The Procedural Rules specify a one-to-four-unit residential property. The rules govern over the promotional description.
- Obtain IAAO approval for your selected project before investing weeks in it
- Do not rely on the undated promotional pathway for scope decisions
Case-Study Route Numbers (Keep Them Separate)
The case-study examination has 100 multiple-choice questions and a maximum of three attempts. Workshop 851, the RES Case Study Review Workshop, is optional preparation for that route: seven review sections and an ungraded 50-question practice case. That 50-question practice case is not the Master blueprint, and the case-study attempt cap does not apply to the Master exam. Course 201 is conditional on this route; it is not a universal seventh core subject.
The Six Core Subject Areas
The six preparation subjects below mirror the core educational content in Courses 101, 102, 300 and 311 and Workshops 151 and 171. They are unweighted headings. IAAO has not publicly verified Master-domain percentages or a content-outline effective year, so treat this list as a curriculum map, not a guarantee of exhaustive coverage. A fuller breakdown sits in RES Exam Domains 2026: Complete Guide to All 6 Content Areas.
Domain 1: Fundamentals of Real Property Appraisal
The foundation: how value is defined and developed for residential property.
- Sales comparison logic and adjustment reasoning
- Cost approach components and depreciation concepts
- Highest and best use reasoning
Domain 2: Income Approach to Valuation
Converting income streams into value, important for the small-income properties within the one-to-four-unit scope.
- Gross rent multiplier and income capitalization mechanics
- Capitalization and discount rate concepts
- Working the math without stored formulas in your calculator
Domain 3: Fundamentals of Mass Appraisal
Valuing many properties at once, the heart of assessment administration.
- Mass appraisal versus single-property appraisal distinctions
- Data, calibration and uniformity concepts
- Ratio-study style measures of assessment performance
Domain 4: Real Property Modeling Concepts
Course 311's current title is Real Property Modeling Concepts; the requirements also recognize the former title, Residential Modeling Concepts. Expect either name in older materials.
- Model specification and variable selection
- Interpreting regression-style output
- Recognizing weak model performance
Domain 5: Uniform Standards of Professional Appraisal Practice (National)
This heading follows the current workshop catalog's "National" title, while the pathway labels the subject USPAP. Workshop 151 or approved USPAP education applies to the US route.
- Applicable jurisdictional standards or approved equivalents apply outside the US
- USPAP is required where no local standards education exists
Domain 6: IAAO Standards of Professional Practice and Ethics
Association standards and ethical conduct, taught through Workshop 171 material.
- Ethical obligations of assessment and appraisal professionals
- How IAAO standards guide professional conduct
Fees and Retake Rules in One Place
The current Professional Designation Program Fee Schedule (copyright 2026) lists the following. Master fees below apply to candidacies beginning in 2021 or later.
| Item | Member | Non-Member |
|---|---|---|
| Candidacy application | $145 | $225 |
| Master Examination, first attempt | $245 | $395 |
| Master Examination, second attempt | $195 | $295 |
| Optional case-study exam, first attempt | $295 | $415 |
Required education, materials, report grading and other route costs are additional, so budget beyond this table. The full picture is in RES Certification Cost 2026: Complete Pricing Breakdown.
Master Retake Timing
- After the first failure: retake after 30 days
- After the second failure: 180 days before subsequent attempts
- Attempt cap: Master attempts may continue while you remain eligible; do not import the case-study three-attempt limit
Key Takeaway
Because the second attempt costs less than the first but a second failure triggers a 180-day wait, treat your first retake as the one that must succeed. Use the 30-day gap to rebuild your weakest subject rather than rereading everything.
Exam-Day Rules: What You Can and Cannot Bring
- Closed book: no reference materials or notes
- Calculator: a stand-alone calculator is permitted, but the proctor must verify that stored formulas are cleared
- Electronics: phones and other unauthorized devices are not permitted
The cleared-memory rule matters for Domains 2 and 4 in particular. If you have relied on stored formulas in practice, rehearse the income-approach and statistical calculations by hand before test day. The paper format also means you work problems on the materials provided, so practice showing your reasoning clearly. When you are ready to test yourself under similar conditions, the RES practice tests are a convenient place to start.
After You Pass: Recertification Numbers
Maintaining the designation requires 70 credit hours in a five-year cycle. Within that total:
- Two hours of qualifying IAAO ethics education
- For US designees, at least 14 hours of standards education covering at least two different USPAP releases
- Other jurisdictions require applicable local standards education
Manual and software-managed cycle start dates differ, so follow the cycle assigned in your own record. The fee schedule lists annual dues of $170 member and $240 non-member for the first designation and no separate recertification-processing charge; annual dues remain payable.
Sequencing Your Review by Subject
Because the six subjects are unweighted, allocate time by your own weakness and by calculation load. This sample sequence front-loads the math-heavy subjects so they get repeated exposure. Adjust it using the approach in RES Study Guide 2026.
Domains 1 and 2
- Rebuild appraisal fundamentals, then drill income-approach calculations by hand with a cleared calculator
Domains 3 and 4
- Mass appraisal concepts first, because modeling questions build directly on them
- Practice interpreting model output, not just defining terms
Domains 5 and 6
- Standards and ethics reward precise recall of language; review the workshop materials closely
Mixed Timed Practice
- Take 50-question sets in a closed-book setting and review every miss by subject
Fact Traps That Cost Candidates Points
- Mixing up exams: 50 questions and four hours is the Master; 100 questions and three attempts is the case study.
- Assuming the 50-question practice case is the real thing: Workshop 851's practice case is ungraded and is not the Master blueprint.
- Treating Course 201 as universal: it applies only on the case-study route.
- Trusting old manuals: use the applicable Procedural Rules rather than the older May 2024 manual or an undated promotional pathway.
- Reading revision dates as exam versions: the retrieved sources carry inconsistent revision markings, which should not be treated as an exam-version date.
- Single-family versus one-to-four-unit: follow the rules, and get your project approved.
For job-market context after you earn the designation, browse RES Jobs, and for a look at what preparation programs typically include, see RES Training.
Frequently Asked Questions
The Master Examination has 50 multiple-choice questions worth one point each, with four hours allowed. A 70% passing requirement means 35 correct answers.
The exam is closed book with no reference materials or notes. A stand-alone calculator is allowed, but the proctor must verify that stored formulas are cleared. Phones and other unauthorized electronic devices are not permitted.
You may retake after 30 days following the first failure. After a second failure, 180 days must pass before subsequent attempts, and attempts may continue while you remain eligible.
No public Master-domain percentages were verified. The six subjects in this guide are curriculum headings from the core courses and workshops, not an official weighted blueprint. See the domains guide for more detail.
The current fee schedule lists $245 for members and $395 for non-members on the first Master attempt. Candidacy application, education, materials and report grading are additional.
Bookmark this page as your quick-reference sheet, then confirm every time-sensitive detail against IAAO's current Procedural Rules and fee schedule before you register. When you want to pressure-test your recall, work through realistic questions on the main practice test site.