
Foss Fields is a 500-unit ground-up multifamily development situated on a 300-acre master-planned community in East Sioux Falls, South Dakota. The master development is positioned at the nexus of Sioux Falls' next major commercial corridor and will ultimately include residential, senior housing, multifamily, office park, retail, and healthcare components, creating a true live-work-play environment. Foss Fields is being developed using the same phased build-lease-build strategy Mailbox Money has successfully executed across seven concurrent developments in the Sioux Falls MSA. The land is fully entitled and shovel-ready.
Why This Opportunity
Supply-constrained submarket: Sioux Falls housing starts are down 52% from 2022 and 20% from 2023, creating a widening gap between housing demand and new supply
Build-lease-build phasing: Each phase begins approximately six months apart, generating cash flow during construction, supporting stronger refinance terms through in-place income, and reducing absorption risk at stabilization
Shovel-ready with entitlement risk removed: Mailbox Money partnered with Veldhouse Companies to complete all zoning, architectural drawings, and engineering before investor capital is deployed, allowing vertical construction to proceed without permitting or zoning delays
Master-planned community: Foss Fields sits within a 300-acre master development in East Sioux Falls with planned residential, commercial, healthcare, and retail components, supporting long-term value creation through live-work-play density
Strong market fundamentals: Sioux Falls MSA population has grown 14.5% since 2020, with 1.5% unemployment, 6.3% wage growth, and 3.6% YoY multifamily rent growth
Conservative underwriting in current rate environment: The development was stress-tested at current (higher) interest rates, with potential refinance upside not underwritten into the base case, preserving conservatism
Projected returns: 22.6% target IRR with a 1.90x equity multiple over a 4-year hold
Deal Structure
Total capitalization: $81.36M
Targeted equity: $28.48M
Debt: $52.88M at 7.5% interest rate, 65% leverage, 25-year amortization, 5-year term with 5 years interest-only
Year 1 NOI: $651,391
Year 4 NOI: $4,289,074
Return on cost: 8.0%
Exit cap: 5.5%
Minimum investment: $50,000
Hold period: 4 years targeted
Offering: 506(c) Reg D, accredited investors only
LP Investor Tiers
Foss Fields offers a tiered investor class structure with preferred returns and profit splits scaling with commitment size:
Institutional ($1M+): 8% preferred return, 90/10 profit split
Platinum ($150K+): 7% preferred return, 85/15 profit split
Gold ($80K+): 6% preferred return, 80/20 profit split
Silver ($50K+): 5% preferred return, 75/25 profit split
Project Details
500 total units across multiple phases
Unit mix: 20 studios (500 SF), 260 one-bedroom (600 SF), 140 two-bedroom (854 SF), 80 three-bedroom (973 SF)
Average unit size: 697 SF
Projected effective rents: $1,025 (studio) to $1,475 (3BR), average $1,286/unit
24 units per building across all phases
Wellness-focused, no-frills design optimized for construction cost efficiency
Target operating expense ratio: 28-35%
Construction cost: $130K-$140K per unit
Construction timeline: 2024-2026
Timeline
9-12 months: First building delivered and occupied, with additional buildings coming online in 12-month increments
12-24 months: Achieve cash flow and initiate dividend distributions
24-48 months: Complete first refinance event
48-120 months: Execute sale with 1031 exchange opportunities
Mailbox Money is a private real estate investment sponsor headquartered in Sioux Falls, South Dakota, with approximately $550M in assets under management. The firm focuses on developing wellness-designed, efficient multifamily communities in growing secondary markets, with a vertically integrated model covering land sourcing, development, construction operations, and asset management.
Platform Overview
$185M+ in transaction volume since 2021
$675M+ in total project costs across current development pipeline
3,500+ units developed since 2021
9 realized dispositions with a 2.0x equity multiple and 20% IRR in aggregate
Active development pipeline of 94-unit to 1,227-unit projects across Minnesota and South Dakota
Current holdings span 26+ properties totaling thousands of units
Leadership
Dusten Hendrickson, Founder & Visionary: Directs architectural appeal, operational efficiency, land selection, design, and partnerships with community stakeholders. Focuses on maximizing natural light, Class A exterior design with Scandinavian-inspired interiors, and streamlined construction for 28-35% expense ratios
Caleb Veldhouse, Developer & Construction Operations Manager: Oversees real estate development, construction operations, and legal counsel. Handles land deals, due diligence, construction debt negotiation, cost segregation studies, value engineering, and energy code optimization
Omar Khan, CFA, Asset Manager & Operations Lead: Manages portfolio operations, financial sustainability, and investor relations. Provides monthly video updates to investors and focuses on risk management across financing and operations
Realized Track Record
Mailbox Money has realized 8 dispositions since 2021 with individual deal IRRs ranging from 18.8% to 62.0%, including:
Rise on McDowell (Phoenix, AZ): 62.0% IRR, 2.9x equity multiple, 27 months held
Equinox at Knight (GA): 41.0% IRR, 2.9x equity multiple, 48 months held
Reserve at Walnut Creek (TX): 34.8% IRR, 2.5x equity multiple, 40 months held
Legacy (GA): 25.4% IRR, 1.5x equity multiple, 21 months held
Lakewood Oaks (FL): 24.6% IRR, 1.7x equity multiple, 32 months held
The Henry (TX): 20.2% IRR, 1.6x equity multiple, 32 months held
The Blair at Bitters (TX): 20.2% IRR, 1.6x equity multiple, 32 months held
Brighton Farms (GA): 18.8% IRR, 1.4x equity multiple, 37 months held
Briarwood Reserve Case Study
The Briarwood Reserve development in Sioux Falls, SD serves as the execution model for Overland Reserve. The Class A, garden-style development consists of five 12-plex buildings, six 14-plex buildings, and one 10-plex building (154 total units). With a 15-month development timeline, mid-$130K per unit construction cost, and 5-year fixed-rate debt with open prepayment, Briarwood has delivered 98 units occupied to date with 56 additional units under construction, validating the phased build-lease-build strategy Mailbox Money is now applying to Overland Reserve.
Sioux Falls, SD
Sioux Falls, South Dakota is one of the fastest-growing metropolitan areas in the Midwest, anchored by a diversified economy, a no-state-income-tax environment, and sustained in-migration.
Sioux Falls MSA Fundamentals
MSA population: 304,555 with 14.5% growth since 2020
Median household income: $85,000
Median single-family home price: $359,000
Unemployment rate: 1.5%
Wage growth: 6.3%
No state income tax, supporting business formation and in-migration
Multifamily Market
94.3% occupancy
3.6% YoY rent growth
Housing starts down 52% from 2022 levels and 20% from 2023, creating a widening supply-demand imbalance
Continued demand for workforce-oriented rental housing driven by population and wage growth
Recession-resilient development landscape supported by diversified economic base and low unemployment
East Sioux Falls Submarket
East Sioux Falls sits within the growth corridor of the metro, positioned to capture expanding residential demand and the surrounding commercial development pipeline. Foss Fields is located on the original Foss family farmland, historically tied to Medal of Honor recipient "Smokey" Joe Foss, and serves as the anchor for the area's next generation of mixed-use development. Low development costs relative to primary markets and a business-friendly regulatory environment continue to attract capital into the submarket.
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