A site plan indicates a building setback of 25 feet from the front property line. If the lot depth is 120 feet and the building depth is 40 feet, what is the minimum distance from the rear of the building to the back property line?
Correct Answer
B) 55 feet
Total lot depth (120') minus front setback (25') minus building depth (40') equals 55 feet remaining to the back property line. This assumes the building is positioned at the minimum front setback.
Why This Is the Correct Answer
The calculation is straightforward: we start with the total lot depth of 120 feet and subtract the required front setback of 25 feet, leaving 95 feet. From this remaining distance, we subtract the building depth of 40 feet, which gives us 55 feet from the rear of the building to the back property line. This assumes the building is positioned at the minimum allowable front setback distance.
Why the Other Options Are Wrong
Option C: 80 feet
95 feet would be incorrect because this only accounts for subtracting the front setback (25') from the total lot depth (120'), but fails to subtract the building depth (40') from the calculation.
Option D: 95 feet
This is incorrect because all necessary information is provided in the problem - we have the lot depth, front setback requirement, and building depth, which is sufficient to calculate the rear distance.
Memory Technique
Remember 'FBR' - Front setback, Building depth, Rear distance. Subtract F and B from total lot depth to get R.
Reference Hint
Florida Building Code, Chapter 1, Scope and Administration - Setback requirements and site planning provisions
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