Mercer (IL) Investor Pulse Report (2026-Q1)

In Mercer County, investors hold a significant 20.2% of the Single-Family Residential market, totaling 1,103 properties out of 5,468 total SFRs. This indicates a substantial rental presence within the local housing stock.

The ownership structure is overwhelmingly dominated by individuals rather than corporations. Individual landlords own 1,052 properties, accounting for 95.4% of the investor-owned inventory, while companies own just 57 properties, or 5.2%.

A striking feature of the Mercer County market is the complete absence of financing in landlord portfolios. All 1,103 investor-owned properties are held as cash assets, suggesting a fiscally conservative and low-leverage approach to real estate investing in the area.

The entity count further underscores the granular nature of ownership. There are 1,318 individual landlords compared to only 48 company landlords, demonstrating that the market is driven by small, local operators, not large-scale businesses.

Reflecting the portfolio composition, 1,072 of the 1,103 properties are classified as rented, confirming that the vast majority of investor-owned homes serve as rental housing for the community.

Investors in Mercer County consistently purchase properties at a significant discount compared to traditional homeowners. In Q1 2025, landlords paid an average of $102,966, which is 23.8% less than the $135,151 paid by homeowners, representing a savings of $32,185 per property.

This pricing advantage remained strong into the second quarter, with landlords paying $119,517 versus the homeowner price of $144,882. This marks a 17.5% discount, or $25,365, indicating a persistent pattern of below-market acquisitions.

The data reveals significant price appreciation since the pandemic era. The average landlord acquisition price of $86,028 between 2020-2023 has climbed to over $100,000 in early 2025, mirroring broader market trends.

While no properties were purchased by landlords in the most recent quarters, the pricing data from market transactions shows a clear and sustained gap. This suggests investors are adept at finding off-market deals or targeting properties that require improvements, allowing for lower entry costs.

The fourth quarter saw a complete freeze in investor acquisition activity in Mercer County. Landlords purchased zero properties, accounting for 0.0% of the total 0 SFR sales recorded in the market during this period.

This halt in activity was universal across all investor sizes. Mom-and-pop landlords (1-10 properties), who represent the vast majority of owners in the county, made no new purchases.

Similarly, mid-size and institutional-tier investors were also inactive, with zero properties acquired. This lack of participation from any investor segment points to broader market conditions, such as low inventory or unfavorable pricing, that deterred new investment.

The absence of new purchases means no new landlords entered the market in Q4. This contrasts with typical market behavior where new single-property investors consistently acquire their first rental property.

The complete cessation of purchasing activity is the most significant finding for the quarter, suggesting that existing landlords are holding their current portfolios and potential new investors are waiting on the sidelines.

The investor landscape in Mercer County is unequivocally dominated by small-scale operators. Mom-and-pop landlords, defined as those owning 1-10 properties, control 99.7% of all investor-owned SFRs.

The market's foundation is built on first-time and small investors. Landlords with a single property (Tier 01) represent the largest segment, owning 861 homes, which constitutes 74.2% of the entire investor portfolio.

Adding to this, landlords with 2-10 properties own another 25.5% of the inventory, cementing the control of small investors. The data refutes any narrative of large-scale consolidation in the region.

In stark contrast, institutional ownership is nonexistent. Investors in the 1,000+ property tier (Tier 09) own 0.0% of the market, a clear indicator that Mercer County is not a target for large corporate landlords.

The largest active tier is the '51-100' property group, which holds just 3 properties, or 0.3% of the market, further highlighting the hyper-localized and small-scale nature of rental ownership.

Individual investors form the backbone of the Mercer County rental market across nearly all portfolio sizes. For single-property landlords, individuals own 829 homes (95.7%) versus just 37 for companies (4.3%).

This pattern of individual dominance continues through the small landlord tiers. Individuals own 94.8% of two-property portfolios, 92.4% of 3-5 property portfolios, and 88.0% of 6-10 property portfolios.

The crossover point where companies become the majority does not occur until the '51-100' property tier. Even in this small segment, there are only 3 properties total, with a company owning 2 (66.7%) and an individual owning 1 (33.3%).

This structure demonstrates that as landlords expand their portfolios in Mercer County, they overwhelmingly do so as private individuals rather than forming corporate entities, at least until they reach a significant scale.

The data from the property ownership by owner type report clearly shows a market characterized by personal ownership, with corporate structures being the rare exception, not the rule.

Investor activity in Mercer County shows significant geographic concentration. The zip code 61231 is the largest hub for investor ownership, with 241 SFR properties held by landlords.

However, the highest market penetration is found elsewhere. The 61276 zip code has the highest investor ownership rate at 42.6%, indicating that more than two out of every five homes there are investor-owned.

High concentration is also evident in other areas. The 61442 zip code has an ownership rate of 38.6% (125 properties), and 61263 is at 35.7%, showcasing specific neighborhoods where investors have a very strong presence.

The primary hub of 61231, despite having the most properties, has a comparatively lower rate of 14.8%. This highlights the difference between raw volume and market saturation.

Analysis of this localized assessor data reveals that investment strategies vary by neighborhood, with some areas attracting a higher volume of investors and others seeing a deeper saturation of the available housing stock.

There is no available historical transaction data for landlords in Mercer County. This suggests that the market for investor-to-investor sales is either nonexistent or too infrequent to be recorded consistently.

Consequently, it's not possible to determine if landlords are net buyers or sellers over time. The absence of data on both purchases and sales prevents the calculation of a buy/sell ratio, a key indicator of market sentiment.

The level of inter-landlord trading, which measures market liquidity and portfolio churning, is effectively zero. This points to a 'buy and hold' strategy being the dominant approach for investors in the area.

Similarly, for the institutional tier (1000+ properties), no transactions were recorded. This is consistent with their 0.0% ownership share in the county; they are not active buyers or sellers here.

Without transaction data, comparing average buy and sell prices to infer profit margins is not possible. The market appears highly illiquid, with investors holding onto their assets for the long term.

In the first quarter, landlord transaction activity was completely dormant in Mercer County. Investors participated in 0 of the 0 total SFR transactions, for a market share of 0.0%.

This inactivity was consistent across all investor sizes. The typically active mom-and-pop tiers (1-10 properties) recorded zero transactions for the quarter.

Likewise, mid-size and institutional investors also posted zero transactions. This lack of market participation from any investor segment indicates a widespread pause in portfolio adjustments, whether buying or selling.

With no purchases made, the average acquisition price for the quarter was $0 for all tiers. There is no data to compare pricing strategies between smaller and larger investors.

Furthermore, inter-landlord trading was nonexistent. The percentage of properties bought from other landlords was 0.0%, reinforcing the view of a static, illiquid market where assets are not changing hands among investors.