Financial projections show investors what a multifamily property could potentially achieve.
Historical performance shows what the property has actually done.
Before relying on assumptions about higher rents, stronger occupancy, lower expenses, or improved Net Operating Income (NOI), investors should understand how the property has performed over previous months and years.
For investors using Investor Resources & Guides in Albany NY, reviewing historical performance can provide important context for evaluating whether a multifamily business plan is realistic, where operational opportunities may exist, and which risks deserve closer attention.
Why Historical Performance Matters in Multifamily Investing
A property’s past doesn’t guarantee its future performance.
However, historical records can help investors establish a baseline.
They may reveal:
- Revenue trends
- Occupancy changes
- Collection problems
- Rising expenses
- Deferred maintenance
- Seasonal patterns
- Changes in NOI
This information allows investors to compare the property’s actual results with the sponsor’s future projections.
The greater the difference between historical performance and the proposed business plan, the more important it becomes to understand how the sponsor expects to create that improvement.
Start With the T-12 Financial Statement
One of the most useful documents is the trailing 12-month financial statement, commonly called the T-12.
It typically shows monthly income and operating expenses for the previous 12 months.
Investors may review:
- Rental income
- Vacancy
- Concessions
- Bad debt
- Other income
- Payroll
- Utilities
- Repairs and maintenance
- Insurance
- Property taxes
- Management expenses
- NOI
Don’t look only at the annual totals.
Review the individual months to identify trends and unusual changes.
For investors reviewing Investor Resources & Guides in Albany NY, the T-12 can provide a useful starting point for understanding the property’s recent financial history.
Look Beyond a Single Year
When available, reviewing several years of financial statements can provide additional context.
One year may contain unusual circumstances that aren’t representative of normal operations.
Consider comparing:
- Year 1
- Year 2
- Year 3
- Current T-12
This can reveal whether income and expenses are moving consistently or whether recent results represent a significant change.
For example, a sharp increase in maintenance expenses during the latest year could indicate aging property systems or deferred maintenance becoming more expensive.
Review Rental Income Trends
Rental income is usually the largest source of multifamily revenue.
Look at how rental income has changed over time.
Ask:
- Is rental income increasing?
- Has growth slowed?
- Are there periods of decline?
- What caused major changes?
Increasing rental income could result from:
- Higher rents
- Better occupancy
- Improved collections
- Renovated units
Investors should determine which factors are actually responsible rather than assuming revenue growth came entirely from higher rents.
Compare Historical Rents With Current Rents
Review the property’s rent roll alongside historical financial statements.
This can help identify how rents have changed.
For example:
| Period | Average Rent |
| Two Years Ago | $1,200 |
| One Year Ago | $1,275 |
| Current | $1,350 |
If the business plan assumes rents will increase to $1,550 quickly, investors should determine whether comparable properties and current leasing activity support that additional increase.
Historical growth can provide context for evaluating future assumptions.
Review Physical Occupancy
Physical occupancy measures how many units are occupied.
Look at occupancy over several periods rather than relying on the current number.
A property may currently report 95% occupancy but have averaged only 88% during the previous year.
Ask what caused the recent improvement.
Likewise, temporarily low occupancy may result from renovations rather than weak rental demand.
Understanding the reason behind occupancy changes matters more than simply observing the percentage.
Review Economic Occupancy
Economic occupancy can provide an even deeper view.
A property may be physically occupied but still fail to collect all scheduled rental income.
Economic occupancy can be affected by:
- Delinquencies
- Bad debt
- Concessions
- Collection problems
If physical occupancy is consistently 95% but economic occupancy is substantially lower, management may have a revenue collection issue.
This distinction can be particularly important when evaluating projected NOI.
Examine Concession History
Concessions can help management maintain occupancy, but they reduce effective rental income.
Review whether the property frequently offers:
- Free rent
- Move-in incentives
- Reduced fees
- Other discounts
A sudden decline in concessions may indicate stronger demand.
Consistently high concessions could indicate that asking rents are above what residents are willing to pay.
If future underwriting assumes concessions disappear, investors should understand why.
Review Delinquencies and Bad Debt
Historical collections can reveal important operational risks.
Look for trends in:
- Late payments
- Delinquencies
- Bad debt
- Write-offs
Increasing bad debt could indicate resident financial stress or management challenges.
Improving collections could represent a meaningful opportunity for a new operator.
Investors should understand whether projected revenue improvements rely partly on stronger collections.
Analyze Other Income
Multifamily properties can generate revenue beyond base rent.
Historical records may include:
- Parking
- Pet rent
- Storage
- Laundry
- Utility reimbursements
- Application fees
Compare these income sources across different periods.
If the business plan projects significant growth in other income, determine whether similar programs have already been implemented successfully or whether the assumptions are still untested.
Track Operating Expense Trends
Revenue is only half of the historical performance analysis.
Investors should also examine how operating expenses have changed.
Pay attention to:
- Property taxes
- Insurance
- Payroll
- Utilities
- Repairs and maintenance
- Property management
- Administrative expenses
If revenue has increased 3% annually while expenses have grown 7%, the property’s NOI may face pressure despite higher rents.
Pay Attention to Insurance Trends
Insurance can become a significant source of expense growth.
Compare premiums over several years when information is available.
For example:
| Year | Insurance Expense |
| Year 1 | $150,000 |
| Year 2 | $175,000 |
| Year 3 | $220,000 |
If the acquisition underwriting assumes insurance will remain around $220,000 despite a history of significant increases, investors should ask what supports that assumption.
Historical trends don’t guarantee future increases, but they shouldn’t be ignored.
Review Property Tax History
Property taxes can also change significantly.
Investors should understand:
- Historical tax expenses
- Recent assessments
- Potential reassessment after acquisition
- Underwritten future taxes
The seller’s historical property tax expense may not accurately represent the buyer’s future obligation.
This is why historical performance should be used as a starting point rather than copied directly into projections.
Examine Repairs and Maintenance
Maintenance trends can provide insight into the physical condition of the property.
Increasing expenses could indicate:
- Aging HVAC systems
- Plumbing issues
- Roof problems
- Deferred maintenance
- Frequent unit repairs
However, unusually low maintenance expenses also deserve attention.
The previous owner may simply have postponed necessary repairs.
Investors should compare historical maintenance costs with property inspections and planned capital expenditures.
Understand Capital Expenditure History
Major capital expenditures may not appear within ordinary operating expenses.
Review previous improvements when information is available.
These might include:
- Roof replacements
- HVAC systems
- Parking improvements
- Exterior work
- Unit renovations
Understanding what has already been replaced can help investors estimate future capital requirements.
If several major systems are approaching the end of their useful lives, historical operating performance alone may understate future cash needs.
Review NOI Trends
Once income and expenses are understood, evaluate historical NOI.
A simplified calculation is:
Effective Property Income – Operating Expenses = NOI
Compare NOI over multiple periods.
For example:
| Period | NOI |
| Year 1 | $900,000 |
| Year 2 | $950,000 |
| Current T-12 | $1,050,000 |
| Projected Stabilized | $1,400,000 |
The projected increase from $1.05 million to $1.4 million is substantial.
Investors should identify exactly where that additional $350,000 is expected to come from.
Separate Market Growth From Operational Improvement
Historical performance can help investors understand what has driven previous improvements.
NOI growth may result from:
Market factors, such as:
- General rent growth
- Stronger local demand
or operational factors, such as:
- Better collections
- Reduced vacancy
- Expense management
- Renovations
- Additional property income
This distinction matters because sponsors typically have greater influence over operations than broader market conditions.
A business plan relying primarily on market growth may have a different risk profile from one focused on specific operational improvements.
Compare Historical Results With the Acquisition Underwriting
One of the most important steps is comparing actual performance with future projections.
Consider creating a simple comparison:
| Metric | Historical | Underwritten |
| Occupancy | 90% | 95% |
| Average Rent | $1,350 | $1,500 |
| Operating Expenses | $900K | $920K |
| NOI | $1.05M | $1.40M |
Then ask what operational changes are required to close each gap.
The underwriting should provide a credible explanation for meaningful improvements.
Look for Unusual One-Time Events
Historical financial statements can contain items that may not recur.
Examples include:
- Major repairs
- Legal expenses
- Insurance settlements
- Temporary staffing expenses
- Unusual income
Professional investors may normalize certain expenses when evaluating property performance.
However, adjustments should be supported by evidence.
Investors should be cautious when numerous unfavorable expenses are removed simply to create a stronger adjusted NOI.
Consider Changes in Management
Poor historical performance doesn’t automatically mean a property is a poor investment.
Sometimes it may indicate an operational opportunity.
A new management team may be able to improve:
- Collections
- Leasing
- Maintenance
- Expense controls
- Resident retention
However, investors should evaluate whether the sponsor has a specific plan rather than assuming new management alone will solve every problem.
Review Seasonal Patterns
Some multifamily expenses fluctuate throughout the year.
In a market such as Albany, seasonal considerations may influence costs such as:
- Heating
- Snow removal
- Landscaping
- Utilities
- Property maintenance
Looking at a full year, and preferably multiple years, can help prevent investors from treating seasonal fluctuations as permanent trends.
Verify Historical Information During Due Diligence
Professional investors may reconcile financial statements with supporting records.
These can include:
- Bank statements
- Rent rolls
- General ledgers
- Tax bills
- Insurance records
- Utility bills
- Vendor contracts
- Maintenance records
This process helps confirm that the financial history accurately represents property operations.
For investors using Investor Resources & Guides in Albany NY, understanding this verification process can provide greater insight into why thorough due diligence is so important before a multifamily acquisition.
Questions Investors Should Ask
When reviewing historical performance, consider asking:
- How have rents changed over the past several years?
- What has historical occupancy been?
- How does economic occupancy compare with physical occupancy?
- Are concessions increasing or decreasing?
- What are the collection and bad-debt trends?
- Which expenses are increasing fastest?
- What major repairs have already been completed?
- How has NOI changed?
- Which historical expenses are being adjusted?
- What specifically must change to reach projected NOI?
These questions can help investors understand both the property’s current condition and the assumptions behind future performance.
Frequently Asked Questions
1. How many years of historical performance should investors review?
When available, reviewing multiple years plus the current T-12 can provide more context than relying on a single period.
2. Why is the T-12 important?
The T-12 provides a month-by-month view of income and expenses over the most recent 12 months, making it useful for identifying recent trends.
3. Should poor historical performance automatically eliminate a property?
No. Poor performance may sometimes represent an operational opportunity, but investors should understand the causes and evaluate whether the sponsor has a credible improvement plan.
4. Why compare economic and physical occupancy?
Physical occupancy measures occupied units, while economic occupancy reflects how much potential revenue is actually being collected.
5. Why compare historical NOI with projected NOI?
The comparison helps investors understand how much improvement the business plan requires and which assumptions must be achieved to reach projected performance.
Final Thoughts
Historical performance gives investors a baseline for evaluating what a multifamily property has already demonstrated.
For investors using Investor Resources & Guides in Albany NY, reviewing several years of rents, occupancy, collections, expenses, capital improvements, and NOI can provide valuable context before accepting future projections.
A large improvement from historical results isn’t necessarily unrealistic.
But it should have a clear explanation.
Instead of simply asking:
“What is the property projected to earn?”
Ask:
“How has the property performed historically, and what specifically will change under the new business plan?”
That comparison can reveal both the potential opportunity and the execution required to achieve it.
Ready to Strengthen Your Multifamily Investment Knowledge?
At Collecting Real Estate, we focus on disciplined underwriting, thorough due diligence, active asset management, and identifying opportunities to improve property performance through hands-on operations.
If you’d like to learn more through our Investor Resources & Guides in Albany NY or discuss how we evaluate multifamily investment opportunities, schedule a consultation today.
