St. Clair (MO) Investor Pulse Report (2025-Q4)

In St. Clair County, MO, investors collectively own 1,263 Single Family Residential (SFR) properties, representing 35.9% of the total market, revealing a significant landlord presence.

Individual investors overwhelmingly dominate the market, owning 1,164 properties (92.2%) compared to companies which own 127 properties (10.1%), illustrating the 'mom-and-pop' nature of local real estate investment.

The rental market is the primary focus for landlords, with 1,250 properties, or 99.0% of the investor-owned SFR, classified as rented. This indicates that almost all investor-owned properties are held for generating rental income.

Cash acquisitions are highly prevalent among landlords, with 979 properties (77.5%) purchased without financing. This high proportion of cash deals suggests a preference for strong financial positions and reduced debt exposure.

By entity count, individual landlords far outnumber companies by a ratio of 12.88 to 1, with 1,649 individual landlords compared to 128 companies, further emphasizing the fragmented, non-institutional market structure in St. Clair County, MO.

In Q4 2025, landlords in St. Clair County, MO, acquired properties at an average price of $197,242, which represents a notable $32,429 discount, or 14.1% less, than the average homeowner price of $229,671.

The trend of landlord acquisition pricing against homeowners shows significant quarterly fluctuations, highlighting a volatile market. For example, in Q2 2025, landlords secured a substantial 17.8% discount ($239,589 vs $291,640), a $52,051 saving per property.

Conversely, Q3 2025 presented a stark anomaly, where landlords paid an average of $414,304, a staggering $173,196 premium (71.8%) over homeowner acquisitions at $241,108. This suggests a unique set of high-value transactions drove the landlord average significantly upwards in that quarter.

The inconsistent nature of the price gap, alternating between discounts and premiums, indicates that landlord buying strategies or market opportunities in St. Clair County, MO, are not uniform across timeframes.

In Q1 2025, the pricing difference was minimal, with landlords paying a slight premium of $3,563 (1.9%) at $188,194 compared to homeowners at $184,631, further illustrating the varied quarterly dynamics.

In Q4 2025, landlords in St. Clair County, MO, were exceptionally active, securing 26 properties which represents 66.7% of the total 39 SFR purchases made in the county, demonstrating a significant market presence.

Mom-and-pop landlords (Tiers 01-04) are the primary drivers of Q4 acquisition activity, responsible for 25 out of the 26 landlord purchases, making up 96.2% of all landlord buying in the quarter.

The Tier 01 segment, comprising single-property landlords, was particularly active, with 26 entities participating in acquisitions that resulted in 17 new properties being added to this tier's portfolio in Q4 2025.

Mid-size landlords (Tier 11-20) showed limited activity, acquiring only 1 property (3.8% of landlord purchases) by a single entity, indicating a concentrated, small-scale expansion within this segment.

Notably, institutional investors (Tier 09, 1000+ properties) made no SFR purchases in St. Clair County, MO, during Q4 2025, highlighting their continued absence from this specific local market's acquisition landscape.

Mom-and-pop landlords (Tiers 01-04) hold an overwhelming majority of investor-owned SFR properties in St. Clair County, MO, controlling 1,320 properties, or 99.6% of the 1,325 properties distributed across all investor tiers.

The market is heavily concentrated in the smallest tier, with single-property landlords (Tier 01) owning 1,107 distinct SFR properties, which accounts for a significant 83.5% of the total investor-owned housing stock in the county.

Mid-size landlords (Tiers 05-08) represent a minimal portion of the ownership landscape, collectively owning just 5 properties across the 11-20 and 21-50 property tiers, reflecting their limited footprint in this market.

Institutional investors (Tier 09, 1000+ properties) have no recorded ownership of SFR properties in St. Clair County, MO, firmly dispelling any notion of large-scale corporate investment in this local market.

The breakdown reveals a clear 'long-tail' distribution, where the smallest landlords contribute the vast majority of investment housing, with ownership steeply declining for larger portfolios.

Individual investors overwhelmingly dominate the smaller investment tiers in St. Clair County, MO, owning 91.0% of single-property (Tier 01) portfolios and 90.9% of two-property (Tier 02) portfolios, reinforcing the prevalence of mom-and-pop operators.

The presence of company ownership gradually increases with tier size, but remains a minority across most segments; for example, companies own 9.0% in Tier 01 and 14.4% in Tier 3-5.

A notable crossover point occurs within the small-medium 21-50 property tier, where individual and company ownership is precisely balanced, with each owning 2 properties (50.0% each). This marks the only tier where companies achieve an equal share.

Despite the balanced ownership in the 21-50 tier, company involvement remains limited in St. Clair County, MO, as this tier consists of only 4 properties in total, and institutional (1000+) company ownership is entirely absent.

The data clearly illustrates that, while companies exist, the St. Clair County, MO, SFR investment landscape is overwhelmingly shaped by individual investors across the vast majority of portfolio sizes.

Zip Code 64776 emerges as the dominant sub-geography for investor-owned properties in St. Clair County, MO, with 547 SFR properties under landlord ownership, reflecting a high concentration of investment activity.

This leading zip code (64776) also shows a significant investor ownership rate of 38.5%, indicating that over a third of its SFR properties are owned by landlords.

The top five zip codes by property count – 64776, 64724, 64763, 64738, and 64740 – collectively house 1,119 investor-owned SFR properties, representing a substantial 88.6% of all such properties in St. Clair County, MO, underscoring strong geographic concentration.

While leading in total count, Zip Code 64776's 38.5% ownership rate is surpassed by other areas in terms of saturation, such as Zip Code 64750 with a 100.0% investor ownership rate and 65785 at 51.3%, suggesting highly localized investment patterns in smaller markets.

Zip Code 64740 appears in both the top 5 by count (57 properties) and percentage (40.4%), demonstrating it is both a significant volume and density market for investor-owned housing in St. Clair County, MO.

Landlords in St. Clair County, MO, are consistently strong net buyers, particularly evident in Q4 2025 with 37 buy transactions compared to just 2 sell transactions, yielding an impressive 18.5x buy/sell ratio.

This robust buying trend is not limited to the current quarter; landlords have demonstrated consistent accumulation throughout 2025, with 139 buys versus 12 sells, translating to an 11.58x buy/sell ratio for the entire year.

Quarterly analysis shows sustained net buying, with Q3 and Q2 2025 each recording 37 and 34 buys respectively, against only 4 sells each quarter, indicating a persistent demand for SFR properties from landlords.

In contrast to the overall market, institutional investors (1000+ tier) show a neutral position for Year 2025, with 2 buys and 2 sells, suggesting they are not actively expanding their portfolios in St. Clair County, MO.

The high buy/sell ratios across all landlord segments signify a market where existing investors are actively expanding their portfolios, and new investors are entering, with very few landlords divesting properties.

In Q4 2025, landlords played a significant role in the St. Clair County, MO, housing market, participating in 37 transactions which constituted 62.7% of all 59 SFR transactions during the quarter.

Mom-and-pop landlords (Tiers 01-04) were the primary drivers of this activity, undertaking 36 out of the 37 landlord transactions, with the single-property (Tier 01) segment being the most active with 26 transactions.

Average purchase prices in Q4 2025 exhibited extreme variations across tiers; Tier 3-5 landlords paid the highest average at $644,952, while Tier 11-20 properties were acquired at a strikingly low average of $20,100, indicating diverse property types or distressed sales.

Inter-landlord transactions were minimal for the smallest tiers (0.0% for Tier 01 and 02), but reached 20.0% for Tier 3-5 (1 out of 5 transactions). Notably, the single transaction in the Tier 11-20 segment was 100.0% sourced from another landlord.

The absence of any Q4 transactions from institutional investors (Tier 09) further underscores that the local real estate market activity in St. Clair County, MO, is predominantly driven by smaller, individual, and mid-sized landlords.