📖 LESSON PREVIEW — module: Module 2 Residential And Commercial
Quoting a Multi-Unit Rekey Job
What You’ll Learn in This Lesson
How to assess a multi-unit property for rekey scope (unit count, lock types, security needs)
Accurate material cost calculation for keys, cylinders, and hardware
Labor estimation techniques for crew coordination and time management
Creating a client-ready quote with line-item breakdowns and contingency buffers
Site Assessment & Unit Breakdown
The first step in quoting a multi-unit rekey job is conducting a thorough site assessment. Begin by walking the property with a digital notebook or camera to document lock types (e.g., Kwikset, Schlage, or mortise), door conditions, and access points. Count units per floor (if applicable) and note variations, such as master key systems or high-security locks. For example, a 20-unit apartment building with three distinct lock series requires separate material calculations for each type.
Next, identify logistical challenges: Are doors accessible without existing key access? Will you need to remove trim or handle sets to reach cylinders? These factors directly impact labor hours. Use a spreadsheet to log each unit’s lock configuration, noting duplicates to avoid overordering parts. A common mistake is undercounting units—double-check by cross-referencing tenant records or property management systems.
Material & Labor Calculations
To calculate material costs, multiply the number of locks per unit by the total units. For a 50-unit office complex with two locks per unit, you’ll need 100 cylinders. Add 10–15% extra for contingencies like damaged hardware. Use bulk pricing from suppliers for key blanks and lubricant, but factor in rush fees if same-day shipping is required.
Labor estimation requires breaking down tasks:
Removal: 5–7 minutes per lock for standard cylinders; add 10 minutes for stuck or corroded units.
Installation: 3–5 minutes per lock, including testing for smooth operation.
Crew size: Two technicians for 20+ units; add a third for properties with complex lock configurations.
Multiply total task time by crew size and hourly rate. For example: 100 locks × 12 minutes each = 20 hours. At $75/hour for two technicians, labor costs $1,500. Add $200–$300 for travel and equipment.
The rest of this lesson (full video walkthrough + downloadable PDF + practice exercises) is available to enrolled Lock School students. Enroll →