Area measurement surveys quantify the rentable, usable, and gross area of commercial and multi-family properties according to recognized standards. BOMA (Building Owners and Managers Association) publishes standards for office, industrial, multi-unit residential, and mixed-use properties. ANSI/BOMA Z65 is the ANSI-approved measurement standard for office buildings. Other standards apply to retail and gross area. The certified measurement is used for lease square footage, valuation, property management, and transactional documentation. We perform area measurement under the supervision of a licensed PLS, with certified reports that meet leasing, lender, and transaction requirements.
• Leasing office, retail, or industrial space requiring certified rentable area
• Lease renewals or audits where tenants question measured area
• Property acquisitions requiring certified area documentation
• Refinancing where lenders require certified area measurement
• Multi-tenant buildings establishing rentable and usable area for all tenants
• Conversion of buildings to condominiums requiring unit area certification
• Property tax appeals based on disputed building area
• Property management workflows requiring updated area measurements after renovation
• Field measurement of all building areas per the applicable BOMA or ANSI standard
• Classification of areas (rentable, usable, common, service) per the standard
• Application of the appropriate measurement methodology (gross area, exterior measurement, interior face of wall, etc.)
• Calculation of load factor and common area allocations
• Certified area report meeting BOMA or ANSI documentation requirements
• Floor plan with area calculations and classifications
• Signed and sealed deliverable for transactional use
• Floor plan survey integration with the area measurement
• 3D laser scanning for complex interiors requiring precision
• Scan-to-BIM with area tabulations built into the model
• Re-measurement after renovations or tenant changes
• Specific lease exhibit preparation
• Property address and access details
• Applicable measurement standard (BOMA 2017 Office, ANSI/BOMA Z65, BOMA Industrial, BOMA Multi-unit Residential, etc.)
• Building size (number of floors, approximate square footage)
• Specific tenant spaces or whole-building scope
• Purpose (lease, transaction, refinance, appeal, etc.)
• Existing floor plans or prior area measurements if available
• Timeline driven by lease, transaction, or audit deadline
1. Standard confirmation. We confirm which BOMA or ANSI standard applies and the specific scope of measurement.
2. Existing documentation review. We review any existing floor plans, lease exhibits, or prior area calculations.
3. Field measurement. Our crew measures the building per the applicable standard's methodology.
4. Calculation. We apply the standard's rules to calculate rentable, usable, common, and service areas.
5. Report and exhibit preparation. We prepare the certified area report and supporting floor plan exhibits.
6. Delivery. We deliver the stamped, signed certification.
• Certified area measurement report per the applicable BOMA or ANSI standard
• Floor plan exhibits with area classifications and calculations
• Load factor and common area allocation calculations for multi-tenant buildings
• Stamped and signed deliverable suitable for leasing or transactional use
• CAD floor plans when included in scope
Why Builoff for Your BOMA and ANSI Area Measurement Survey
• Licensed California PLS (PLS 8099) overseeing all area certifications
• Familiar with BOMA 2017 Office, ANSI/BOMA Z65, BOMA Industrial, and BOMA Multi-unit Residential standards
• Experience supporting leasing, lender, and transactional area measurement requirements
• 3D laser scanning capability for complex interiors requiring precision
• Combined floor plan + area measurement scope in one engagement keeps costs efficient
• Clear reports that landlords, tenants, brokers, and lenders can rely on
Usable area is the space exclusively occupied by the tenant. Rentable area is usable area plus the tenant's proportional share of common areas (lobbies, corridors, restrooms, etc.). The ratio between rentable and usable is called the "load factor." Rentable area is what's used to calculate rent in most commercial leases.
BOMA and ANSI standards leave some methodology choices to the measurer (which face of the wall to measure to, how to treat partial-height partitions, etc.). Different surveyors applying the same standard can produce slightly different results. We document our methodology clearly so the result is reproducible.
Most BOMA area measurement projects are completed in 2 to 3 weeks from authorization. Larger multi-tenant buildings or those requiring 3D scanning take longer. We'll confirm timing with your estimate.
BOMA publishes different standards for office, industrial, multi-unit residential, retail, and mixed-use buildings. The applicable standard depends on building type and use. For most office buildings, BOMA 2017 Office Standard (or its ANSI-approved version, ANSI/BOMA Z65.1) is current. We confirm the right standard at the start of the project.
Yes, certified BOMA or ANSI area measurement reports are commonly used in property tax appeals, especially when the assessor's records differ from the actual measured building area. Specific evidentiary requirements vary by jurisdiction; coordinate with your tax attorney or appraiser.
We use the standard your project calls for, whether a specific BOMA standard, for example office or multi-unit residential, or the applicable ANSI standard. The right standard depends on property type and how the area figures will be used, such as leasing, so we confirm it with you or your broker before measuring.