If you are buying, refinancing or managing a commercial property in Southern California, the first question is usually the same: what will the inspection cost? The short answer is that most commercial building inspections in San Diego, Orange, Los Angeles, Riverside and San Bernardino Counties run between $1,200 and $8,000, with small single-tenant buildings at the low end and large industrial or multifamily assets at the high end.
This guide gives you real 2026 price ranges by building size and property type, explains the six factors that actually move the fee, and shows what should be included so you can compare quotes on equal terms.
Commercial building inspection cost at a glance
| Property type | Approximate size | Typical inspection fee |
|---|---|---|
| Single-tenant retail, office condo, small freestanding building | Under 10,000 sq ft | $1,200 - $2,500 |
| Multi-tenant retail center, medical office, small industrial | 10,000 - 40,000 sq ft | $2,500 - $5,000 |
| Large industrial, warehouse or distribution building | 40,000 - 250,000 sq ft | $4,000 - $9,000 |
| Multifamily property (per-unit sampling required) | 20 - 200 units | $3,500 - $12,000 |
| Portfolio or multi-building campus | Varies | Quoted per building, volume adjusted |
Priced by area, most commercial inspections land between $0.10 and $0.30 per square foot. On a per-model basis, expect a flat fee of $1,200-$5,000 for standard assets, an hourly rate of $150-$250 for partial scopes, or a per-square-foot quote for large industrial buildings.
Cost by inspection type
| Inspection scope | Typical cost |
|---|---|
| Walk-through condition report (no lender requirement) | $1,200 - $3,000 |
| Property Condition Assessment to ASTM E2018 (lender-grade) | $2,500 - $8,000+ |
| Commercial roof inspection (standalone) | $400 - $1,800 |
| Phase I Environmental Site Assessment (ASTM E1527) | $2,000 - $3,500 |
| Infrared roof moisture survey | $0.03 - $0.10 per sq ft |
| Sewer lateral / drain scope | $450 - $900 |
The 6 factors that determine your inspection fee
1. Building size
Area is the single biggest driver because it sets time on site. A 6,000 square foot retail building is a half-day walk; a 120,000 square foot distribution building with two dock banks and a 100,000 square foot roof plane is a full day with a second inspector.
2. Property type
Asset type determines how many building systems exist. Warehouses are large but mechanically simple. Medical office is small but dense, with dedicated HVAC zones, medical gas and emergency power. Multifamily requires sampling individual units, which means access coordination and interior time in every building. Restaurants add grease exhaust, walk-in refrigeration and heavy makeup air.
3. Number of tenant spaces
Each suite is a separate access appointment, a separate electrical panel and often a separate rooftop unit. A 20,000 square foot single-tenant building costs materially less to inspect than the same footage split into twelve suites.
4. Building age and condition
A 1978 building carries original electrical distribution, possible aluminum branch wiring, likely asbestos-containing materials and a roof on its third recover. Documenting those conditions with remaining-life estimates a lender will accept takes longer than a 2016 building under warranty.
5. Roof type and access
A single-ply membrane with interior hatch access is straightforward. Steep-slope tile, multi-plane built-up roofs with generations of patching, or roofs requiring a lift or drone flight add cost.
6. Report standard
This is where quotes diverge most. A general condition report is a summary of observations. An ASTM E2018 Property Condition Assessment is a defined scope with a Property Condition Report, opinions of probable cost for immediate repairs and a capital reserve table over a 10- or 12-year analysis period. The PCA takes substantially more analysis time and is what lenders and investment committees require.
What is included in the fee
A base commercial inspection fee normally includes the site walk, roof access, accessible mechanical and electrical rooms, representative tenant spaces, exterior envelope and site improvements, photo documentation and a written report with prioritized findings. A lender-grade PCA also includes an immediate repairs table and a capital reserve schedule.
Common add-ons priced separately
- Phase I Environmental Site Assessment: $2,000 - $3,500 for a standard site
- Specialty consultants: structural engineer, elevator, fire sprinkler certification
- Sampling and lab work: asbestos, lead or mold testing billed with lab fees
- Infrared moisture survey: $0.03 - $0.10 per square foot
- Rush turnaround inside a short contingency period
Cost by county in Southern California
- San Diego County: typically at the higher end of the range; strong demand and older coastal building stock
- Orange County: similar to San Diego, with premium pricing in Irvine and coastal submarkets
- Los Angeles County: the widest range, from value industrial in Commerce and Vernon to premium urban and office assets
- Riverside & San Bernardino Counties: often slightly lower averages, offset by travel on large Inland Empire industrial sites
Why the cheapest quote is usually the most expensive
A $600 "commercial inspection" is almost always a residential-style checklist. It will not satisfy a lender, it will not carry a capital reserve schedule, and it will not stand behind a price renegotiation. On a $3 million acquisition, the difference between a $1,500 report and a $600 report is trivial next to a single missed $180,000 roof replacement or an undersized electrical service that blocks your planned tenant improvement.
How to get an accurate quote
Send the property address, asset type, approximate building area, number of tenant spaces, year built and whether a lender is involved. That is enough for a qualified firm to return a fixed fee and written scope, usually the same business day. Avoid hourly arrangements on due-diligence work - a fixed fee with a defined ASTM E2018 scope protects your contingency timeline.
Call 619-473-2133 or request a quote online for a same-day fixed-fee proposal anywhere in Southern California.
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About the author
Maurice Bedard
Chief Inspector & Owner · CCPI, CMI, CMR
Maurice Bedard is the chief inspector and owner of U.S. Commercial Building Inspections, a Certified Commercial Property Inspector with more than 25 years in commercial real estate, construction, restoration and remediation across Southern California. He has personally inspected office, retail, industrial, multifamily and institutional buildings for buyers, owners, brokers and lenders throughout San Diego, Orange, Los Angeles, Riverside and San Bernardino Counties.
Written and reviewed by Maurice Bedard · Published October 9, 2024 · Updated September 14, 2026
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