What Documents Should You Request Before Buying a Commercial Property?
- May 26
- 9 min read
Buying a commercial property is not only about the walkthrough, inspection, purchase price, or location. The documents behind the property can reveal important information about maintenance history, prior repairs, environmental concerns, leases, building systems, capital improvements, and future cost exposure.
For commercial buyers, investors, brokers, lenders, and business owners in Boise, the Treasure Valley, and Southern Idaho, requesting the right documents early can make the due diligence process more effective.
Not every seller will have every document. Some properties are well organized, while others have limited records. But even partial documentation can help buyers ask better questions, define the right inspection scope, and make more informed real estate decisions.
Why Property Documents Matter
A commercial inspection provides a snapshot of visible and accessible property conditions at the time of inspection. Documents can add context by showing what has happened before the inspection.
Property records may help answer questions like:
Has the roof leaked before?
How old is the HVAC equipment?
Has the property had recurring plumbing problems?
Are there prior environmental reports?
What repairs have been completed?
Are tenants responsible for certain maintenance items?
Are there active warranties?
Has the building had major capital improvements?
Are there known deferred maintenance items?
Has the property been inspected before?
Documents do not replace an inspection, but they can make the inspection and due diligence process more informed.
1. Prior Inspection Reports
Ask whether the seller has any prior inspection reports.
These may include:
Commercial building inspection reports
Property Condition Assessment reports
Roof inspection reports
Fire door inspection reports
Sewer scope reports
Environmental reports
Structural reports
HVAC evaluations
Electrical evaluations
Plumbing evaluations
Prior reports can help identify known concerns, recurring issues, previous recommendations, and areas that may deserve additional attention during the current due diligence process.
If an older report identified a roof leak, damaged electrical equipment, HVAC deficiencies, or drainage problems, the buyer can ask whether those items were repaired and request supporting documentation.
For current visible condition review, Northline provides commercial building inspections throughout Boise, the Treasure Valley, and Southern Idaho.
2. Roof Records
The roof is often one of the most important and expensive building systems in commercial real estate. Buyers should request any available roof documentation.
Useful roof records may include:
Roof installation records
Roof replacement records
Roof repair invoices
Warranty documents
Roof maintenance records
Leak history
Contractor proposals
Roof inspection reports
Moisture scan reports, if available
Drainage or gutter repair records
Records of tenant complaints related to leaks
Roof records can help determine the age of the roof, whether repairs have been recurring, and whether the roof has an active warranty. If there is a history of leaks or repeated patching, the buyer may want further evaluation by a qualified roofing contractor.
3. HVAC Service Records
HVAC systems can represent major cost exposure in commercial buildings. This is especially important for office, retail, restaurant, medical, warehouse, and mixed-use properties.
Request records such as:
HVAC service logs
Preventive maintenance agreements
Repair invoices
Equipment replacement records
Equipment age information
Contractor proposals
Filter maintenance records
Records of tenant comfort complaints
Warranty information
Documentation for rooftop units or split systems
HVAC records can help identify whether equipment has been regularly maintained or whether repairs have been reactive and inconsistent.
If records are limited or equipment is older, a buyer may want a qualified HVAC contractor to evaluate the system further.
4. Plumbing and Sewer Records
Plumbing issues can affect operations, tenant satisfaction, restaurants, restrooms, common areas, and long-term maintenance costs.
Ask for:
Plumbing repair invoices
Water heater records
Sewer repair records
Drain cleaning history
Sewer scope reports
Backflow testing records, if applicable
Water service repair records
Leak repair history
Restroom renovation records
Records of recurring clogs or backups
Recurring drain problems, sewer repairs, or water intrusion history may indicate a need for additional plumbing or sewer evaluation.
5. Electrical Records
Electrical system documentation can be especially important when the buyer’s intended use may require higher power demand, specialized equipment, tenant improvements, restaurant equipment, medical equipment, or industrial operations.
Request documents such as:
Electrical repair invoices
Panel upgrade records
Service upgrade documentation
Electrical contractor reports
Permits for electrical work
Generator or backup power records, if applicable
Lighting upgrade records
Records of tenant electrical complaints
Documentation for specialty equipment connections
Utility service information
A commercial building inspection may identify visible electrical concerns, but an electrical contractor may be needed for load calculations, design review, capacity evaluation, or repair estimates.
6. Environmental Reports
Environmental due diligence is a major consideration in commercial real estate. Even if the building appears normal today, prior use may matter.
Ask whether the seller has any environmental documents, such as:
Phase I Environmental Site Assessment reports
Phase II Environmental Site Assessment reports
Soil or groundwater testing reports
Underground storage tank records
Spill or release records
Remediation documentation
Environmental closure letters
Regulatory correspondence
Hazardous materials reports
Asbestos or lead-based paint reports, if applicable
Records of prior industrial, fuel, automotive, dry cleaning, or agricultural use
Environmental records can be especially important for properties with current or prior uses involving fuel, automotive activity, industrial operations, dry cleaning, manufacturing, chemical storage, or redevelopment.
Northline provides Phase I Environmental Site Assessment support for commercial buyers, lenders, developers, brokers, and investors in Boise and Southern Idaho.
7. Lease Documents and Tenant Information
If the property is occupied, leases are a major part of due diligence. Lease documents may affect income, expenses, maintenance obligations, repair responsibilities, access, future use, and buyer risk.
Request:
Current leases
Lease amendments
Rent rolls
Tenant contact information if appropriate
Common area maintenance agreements
Maintenance responsibility summaries
Tenant improvement agreements
Options to renew
Exclusive use provisions
Estoppel certificates if applicable
Records of tenant complaints
Landlord repair obligations
Tenant repair obligations
Information about vacant spaces
Move-in or move-out condition reports
Lease documents should be reviewed by a qualified commercial real estate attorney or appropriate advisor. Northline does not provide legal advice or lease interpretation.
For tenants evaluating a leased space, Northline also provides triple net lease inspections to help document visible property conditions before signing, renewing, or negotiating a commercial lease.
8. Repair and Maintenance History
A property’s repair history can reveal patterns that may not be obvious during a single inspection.
Ask for:
General repair invoices
Maintenance logs
Work order history
Contractor invoices
Service agreements
Property manager notes
Recurring issue logs
Emergency repair records
Warranty repair documentation
Deferred maintenance lists
If the same issue appears repeatedly, such as roof leaks, plumbing backups, HVAC failures, or drainage complaints, the buyer should understand whether the underlying cause was corrected or simply patched.
9. Capital Improvement Records
Capital improvements can help buyers understand what has been upgraded and when.
Request documentation for:
Roof replacement
HVAC replacement
Electrical upgrades
Plumbing upgrades
Tenant improvements
Parking lot replacement or resurfacing
Exterior renovations
Window or storefront replacement
Structural repairs
Fire/life safety upgrades
Accessibility improvements
Building additions
Major interior remodels
Capital improvement records may help clarify the age, quality, and scope of upgrades. They can also help distinguish between true improvements and cosmetic updates.
10. Permits and Approvals
Permits can provide important context for prior work. Not every repair requires a permit, but major building, electrical, plumbing, mechanical, or structural work may have permit history.
Ask for:
Building permits
Electrical permits
Plumbing permits
Mechanical permits
Fire system permits
Tenant improvement permits
Certificates of occupancy
Change-of-use approvals
Final inspection approvals
Records of open permits
Records of unresolved permit issues
Permit records may also be available from the local jurisdiction, depending on the property and public records access.
11. Fire and Life Safety Records
Fire and life safety documentation may be important for multifamily, office, retail, industrial, warehouse, mixed-use, and managed facilities.
Ask for:
Fire alarm inspection reports
Sprinkler inspection reports
Fire extinguisher inspection records
Fire door inspection records
Emergency lighting inspection records
Fire marshal reports
Corrective action documentation
Alarm monitoring agreements
Hood suppression records for restaurants
Exit sign or emergency lighting records
Records of known life safety deficiencies
For properties with fire-rated doors, corridors, stairwells, mechanical rooms, or common areas, documented fire door inspections may help owners and managers better understand visible fire door conditions.
12. Utility Information
Utility records can help buyers understand building operations, usage patterns, and potential business costs.
Request available information for:
Electric service
Gas service
Water service
Sewer service
Trash service
Irrigation service if applicable
Utility provider information
Historical utility costs
Meter locations
Shared utilities
Tenant utility arrangements
Known utility limitations
Utility information can be especially important when the buyer or tenant has a specific intended use, such as restaurant, medical, manufacturing, cold storage, salon, fitness, or warehouse operations.
13. Site Plans, Building Plans, and Surveys
Plans and surveys can help clarify property layout, building configuration, boundaries, easements, parking, drainage, utility locations, additions, and tenant spaces.
Ask for:
Site plans
Building plans
Floor plans
Tenant improvement plans
Surveys
ALTA surveys if available
Parking layout plans
Drainage plans
Utility plans
As-built drawings
Fire/life safety plans
Landscape or irrigation plans
Plans can also help the inspection team understand the property before the site visit, especially for larger or multi-building commercial properties.
14. Warranties and Service Agreements
Warranties and service agreements may affect future costs and responsibilities.
Request:
Roof warranties
HVAC warranties
Equipment warranties
Elevator service agreements, if applicable
Fire alarm monitoring agreements
Sprinkler service agreements
Pest control agreements
Landscaping contracts
Snow removal agreements, if applicable
Parking lot maintenance agreements
Janitorial agreements
Security system agreements
Generator service agreements
Buyers should verify whether warranties are transferable and whether service agreements will continue after closing.
15. Insurance and Claim History
Insurance information can sometimes reveal prior damage or recurring concerns.
Ask whether the seller can provide:
Prior insurance claims
Water damage claims
Roof damage claims
Fire or smoke damage claims
Wind or storm damage claims
Liability claims related to site conditions
Repair documentation tied to claims
Open or unresolved claim information
Insurance information may not always be available, but it can be helpful when evaluating prior damage or repairs.
16. Code, Violation, or Notice Records
Buyers should ask whether there are any known notices, violations, or open corrective items.
These may include:
Code enforcement notices
Fire marshal notices
Building department notices
Health department notices
Environmental notices
Tenant complaints
Accessibility-related notices
Open corrective action items
Unresolved permit issues
HOA or association notices if applicable
Known notices or violations should be reviewed carefully with the appropriate professionals before closing.
17. Association, Common Area, or Shared Maintenance Documents
Some commercial properties have shared maintenance obligations, associations, or common area arrangements.
Request documents such as:
Association agreements
Common area maintenance agreements
Shared parking agreements
Shared driveway or access agreements
Easement documents
Maintenance cost-sharing agreements
Reserve information, if applicable
Common utility agreements
Shared roof or wall agreements
Property management agreements
These documents may affect ownership costs, responsibilities, access, and long-term maintenance planning.
18. Seller Disclosures and Known Conditions
Ask the seller for any available disclosures or known-condition summaries.
These may include:
Known defects
Known leaks
Known structural concerns
Known environmental concerns
Known tenant complaints
Known drainage problems
Known equipment failures
Known roof issues
Known pest concerns
Known disputes
Known maintenance needs
Disclosures should not be treated as a substitute for inspection, but they can help guide inspection focus and follow-up questions.
How These Documents Support the Inspection Process
Documents can help the inspection process in several ways.
They may help:
Identify known areas of concern before the site visit
Confirm the age of major systems
Clarify whether repairs were completed
Show recurring maintenance patterns
Support further evaluation recommendations
Help define whether a commercial building inspection, PCA, Phase I ESA, or specialty review is needed
Give the buyer better questions to ask the seller, broker, lender, attorney, or contractor
The more organized the documentation, the easier it is to understand the property’s condition history and potential future obligations.
What If the Seller Has Limited Records?
Some sellers will have limited documentation. That does not automatically mean the property has major issues, but it does increase uncertainty.
If records are missing, buyers may want to:
Expand the inspection scope
Request contractor evaluations
Ask for seller clarification
Review public permit records
Request utility information
Ask for maintenance history from property management
Review tenant complaints or estoppel information when applicable
Build more contingency into repair planning
Discuss risk with their broker, lender, attorney, or advisor
Limited documentation makes the physical inspection even more important.
Commercial Property Document Request Checklist
Use this checklist as a starting point:
Prior inspection reports
Roof records
HVAC service records
Plumbing and sewer records
Electrical records
Environmental reports
Current leases and amendments
Rent roll
Repair invoices
Maintenance logs
Capital improvement records
Permits and approvals
Fire and life safety records
Utility information
Site plans and building plans
Surveys
Warranties
Service agreements
Insurance claim history
Code or violation notices
Association or shared maintenance documents
Seller disclosures
Known-condition summaries
Not every item will apply to every property. The document request should be tailored to the property type, transaction, lender requirements, and intended use.
Commercial Property Due Diligence in Boise and Southern Idaho
Northline Inspection Co. helps commercial buyers, investors, brokers, tenants, property managers, and business owners better understand visible property conditions before major real estate, leasing, ownership, and asset decisions.
Depending on the property and transaction, Northline can support commercial due diligence through commercial building inspections, Property Condition Assessments, Phase I Environmental Site Assessment support, fire door inspections, and triple net lease inspections.
For a broader overview, review Northline’s commercial property due diligence checklist.
