Real estate appraisers are professionals trained to determine the value of a property. They are required to train for 2 to 3 years as an Apprentice. They consider various factors when evaluating a property, including:

1. Location: The proximity to schools, public facilities, shopping centers, public transportation, and the overall neighborhood quality can significantly impact a property's value.

2. Size and Layout: The appraiser considers the size of the property in terms of square footage, number of bedrooms, bathrooms, and overall layout. Functional layout and efficient use of space can increase the value.

3. Condition of the Property: The overall condition of the property, including the foundation, roof, plumbing, electrical systems, and appliances, is crucial. Properties in good condition generally have higher values.

4. Age of the Property: Older properties may have historical value, but their condition and the extent to which they've been updated or renovated also play a significant role in appraisal.

5. Comparables (Comps): Appraisers often use comparable sales (similar properties that have recently sold in the area) to assess the value of the subject property. These comparables should be similar in size, location, and condition to the property being appraised.

6. Market Trends: Appraisers consider the current real estate market trends, including supply and demand, interest rates, and economic factors, which can affect property values.

7. Zoning Regulations and Legal Issues: Zoning laws, land use regulations, and any legal issues related to the property can influence its value.

8. Improvements: Any additional features or improvements, such as a renovated kitchen, a swimming pool, or energy-efficient upgrades, can increase the property's value.

9. Income Potential: For investment properties, the potential income generated (such as rental income) is a crucial factor in valuation.

10. External Factors: Environmental issues, views, noise levels, and other external factors can also influence the property's value.

Some may ask quite a few questions and other not as many.  This is typically dependent on the amount of information they can gather online and through public sources as well as what they are observing while at the home.  It's important to note that the specific criteria and weight given to each factor can vary based on the type of property being appraised and local real estate market conditions. Appraisers use their expertise and professional judgment to evaluate these factors and determine an accurate appraisal value for the property.