Rock (WI) Investor Pulse Report (2026-Q1)

In Rock County, investors hold a portfolio of 1,056 Single-Family Residential (SFR) properties, making up 2.4% of the total 43,598 SFRs in the market.

Individual investors are the primary drivers of the rental market, owning 817 properties, which accounts for 77.4% of the total investor-owned inventory. Company-owned properties, while significant, comprise the remaining 25.3% with 267 homes.

The ownership structure is similarly skewed towards individuals when looking at landlord entities. There are 1,087 distinct landlords, of which 897 are individuals and 190 are companies, a ratio of nearly 5-to-1.

Investment strategy appears to favor liquidity, with 787 properties (74.5%) owned free and clear (cash) compared to just 269 (25.5%) that are financed. This suggests many investors are using existing capital rather than leverage to acquire assets.

The portfolio is overwhelmingly rental-focused, with 979 of the 1,056 properties classified as non-owner-occupied. This high concentration confirms the primary business model for these owners is providing rental housing.

A significant pricing disparity exists between what landlords and traditional homeowners pay in Rock County. In Q1 2026, landlords acquired properties for an average of $196,700, while homeowners paid $315,683, representing a 37.7% discount for investors.

This price gap of $118,983 in the most recent quarter demonstrates the ability of investors to find and secure undervalued properties. This may reflect acquisitions of distressed assets or off-market deals not available to typical buyers.

The landlord discount has shown considerable volatility over the past year. It reached its peak in Q3 2025 when investors paid 46.6% less ($169,910 vs. $318,056). However, the gap was much narrower in Q2 2025 at just 12.8% ($259,671 vs. $297,941), indicating that the investor advantage can shift dramatically from quarter to quarter.

Overall price appreciation is evident when comparing recent figures to the pandemic era. The average acquisition price during 2020-2023 was $148,047, which is significantly lower than the prices seen throughout 2025 and into 2026.

It is important to note that landlord acquisition volume appears very low based on the provided data, with zero properties recorded as purchased in several recent timeframes. This suggests either sporadic activity or potential data reporting lags.

Landlord purchasing activity was minimal in Q4 2025, with investors acquiring only 10 of the 335 total SFRs sold in Rock County. This represents a small market share of just 3.0%.

The activity that did occur was almost entirely driven by small-scale investors. Mom-and-pop landlords, defined as those owning 1-10 properties, were responsible for 9 of the 10 acquisitions (90.0%).

New entrants made up a notable portion of this activity. Six new landlord entities entered the market, purchasing 4 properties and starting their portfolios at the single-property tier.

Mid-size and institutional investors were largely absent. Landlords in the 11-1000 property tiers made only one purchase, and institutional investors (1000+ properties) made zero acquisitions this quarter.

This purchase data reinforces the market structure in Rock County, where growth is primarily happening at the smallest end of the investor spectrum rather than through large-scale portfolio aggregation.

The investor landscape in Rock County is overwhelmingly dominated by small-scale, mom-and-pop landlords. Owners with 1-10 properties (Tiers 01-04) control a combined 95.7% of all investor-owned SFRs.

Single-property landlords (Tier 01) form the bedrock of this market, owning 685 properties alone, which constitutes 62.8% of the entire investor portfolio. This highlights the importance of first-time and small investors in providing rental housing.

In stark contrast, institutional investors with portfolios of over 1,000 properties have a negligible footprint. They own just 7 properties, representing a mere 0.6% of the investor-owned market, challenging any narrative of a large corporate takeover in this area.

Mid-size landlords (11-1000 properties) also hold a small share, collectively owning 40 properties, or 3.7% of the total. The ownership concentration is clearly at the smallest end of the scale.

This distribution reveals a highly fragmented market structure, where the collective power of thousands of small owners far outweighs that of a few large firms. This is a classic pattern for many markets focused on real estate investing.

A distinct pattern emerges when analyzing ownership by entity type across different portfolio sizes. While individual investors dominate the market overall, companies take control as portfolios grow.

The crossover point occurs in the 6-10 property tier (Tier 04). At this level, companies own 52.1% of the properties (38 homes), surpassing the 47.9% (35 homes) held by individuals. This suggests that a portfolio of this size often triggers a shift to a more formal, corporate ownership structure.

In the smallest tiers, individual ownership is overwhelming. Individuals own 583 of the 685 single-property rentals (82.7%) and 50 of the 71 two-property rentals (70.4%).

Even in the small-medium tier of 11-20 properties, individuals still hold a majority, owning 13 of the 20 properties (65.0%).

This trend indicates that as investors scale their operations beyond a handful of properties, they increasingly utilize corporate entities for liability protection, financing, or operational efficiency.

An analysis of the geographic distribution of investor-owned properties within Rock County cannot be completed at this time. The data required to identify specific zip codes or sub-regions with high concentrations of investor activity was not available.

Typically, this section would highlight the top 5-10 areas by both the raw count of investor-owned properties and the investor ownership percentage. This helps distinguish between areas with many properties overall versus areas with a high density of rentals.

Without this granular data, it is not possible to determine if investor ownership is clustered in certain neighborhoods or spread evenly across the county.

Further investigation using more detailed assessor data at the local level would be necessary to uncover these geographic patterns and identify potential investment hotbeds.

As a result, insights into regional price variations, landlord entity density, and the correlation between high-count and high-percentage areas cannot be provided in this report.

Investor transaction data reveals a fluctuating but generally acquisitive stance in the Rock County market. In the most recent quarter, Q1 2026, landlords were net buyers, adding a net of 7 properties to their portfolios with 12 purchases against 5 sales.

This marks a return to trend after a brief period as net sellers in Q3 2025, when they sold 14 properties while only buying 11. This volatility indicates that investor sentiment or market opportunities can shift quickly from one quarter to the next.

Looking at the broader trend, landlords have been consistently growing their portfolios. For the full year of 2025, they were net buyers with 76 purchases and 53 sales. Similarly, in 2024, they acquired 93 properties while selling 59.

Institutional investors (1000+ tier) also showed a net-buyer position in their most recent period of activity. In 2024, they purchased 7 properties and sold 4, resulting in a net gain of 3 properties.

This historical data suggests a consistent, long-term strategy of portfolio growth among both small and large investors in the region, despite short-term fluctuations in activity.

In Q1 2026, landlord transaction volume represented a small fraction of the overall market in Rock County. Of the 478 total SFR transactions, only 12 involved a landlord as the buyer, equating to a 2.5% market share.

The activity was heavily concentrated among smaller investors. Mom-and-pop landlords (Tiers 01-04) were responsible for 11 of the 12 purchases. Institutional investors (Tier 09) recorded zero transactions.

Pricing strategies appear to vary significantly by tier. New single-property landlords paid the highest average price at $179,667 across 6 transactions. In contrast, a single property acquired by a small-medium landlord (11-20 tier) was purchased for just $47,500, likely a distressed or otherwise unique asset.

Inter-landlord trading was minimal. Only one of the 12 transactions involved an investor buying from another landlord. This occurred in the small landlord (3-5 properties) tier, which had an average purchase price of $273,725 for its 4 transactions.

This data indicates that in Q1, investors were not a major force driving transaction volume but were active at the small-scale level, often targeting different types of properties based on their portfolio size.