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Trusted Property Management for Affordable Housing in Sioux Falls, SD
Costello Property Management has been a trusted leader in the affordable housing industry since the 1920s, rooted in a legacy of excellence and community impact. Founded on decades of experience, we specialize in property management, development, construction, and compliance services, serving South Dakota, Nebraska, and Wyoming. Our team of seasoned professionals brings unparalleled expertise in multifamily housing, with a focus on strategic growth, financial robustness, and operational efficiency.

We prioritize long-term tenant relationships and capital investment maximization while maintaining the highest standards of professionalism. Recognized for innovation and industry leadership, we have developed over 40 affordable housing complexes and remain committed to advancing housing solutions through integrity and collaboration.
Services
Property Management Affordable Housing Development Construction Services Compliance Auditing Maintenance Management Financial Services Human Resources Emergency Maintenance Training Programs Capital Improvement Projects
Highlights and features
  • We offer over 80 years of experience in affordable housing management and development.
  • Our team includes certified professionals with expertise in compliance and multifamily housing.
  • We provide comprehensive services including development, construction, and property management.
  • We have successfully developed 40+ affordable housing complexes across three states.
  • Our commitment to long-term tenant relationships ensures stable, high-quality housing solutions.
Services
Property Management
We provide comprehensive property management for multifamily housing, including tenant relations, financial oversight, and operational efficiency. Our services ensure stable cash flow and long-term tenant satisfaction through strategic leadership and industry expertise. With decades of experience, we manage compliance, marketing, and maintenance to maximize property value.
Affordable Housing Development
Our development services focus on creating affordable housing solutions through strategic planning and investment. We specialize in long-range decisions that align with community needs and regulatory standards. With over 40 complexes developed, we combine expertise in financing, construction, and compliance to deliver sustainable housing options.
Compliance Auditing
We ensure adherence to federal and state housing regulations through rigorous compliance auditing. Our team, led by certified experts, conducts thorough reviews of affordable housing programs to maintain standards. This service minimizes risks and supports successful project outcomes through detailed reporting and training.
Emergency Maintenance
Our emergency maintenance service addresses critical issues like flooding, heating failures, and structural hazards outside regular hours. A dedicated line ensures rapid response to life-threatening or property-damaging situations. We prioritize safety and minimize disruptions through 24/7 availability for urgent needs.
Capital Improvement Projects
We oversee capital improvement projects to enhance property value and resident satisfaction. This includes infrastructure upgrades, energy-efficient installations, and modernization of housing units. Our team manages timelines, budgets, and quality control to deliver results that align with long-term investment goals.
People
Joan Franken
Managing Director
Joan Franken leads Costello Companies with 22 years of experience, overseeing 40+ affordable housing developments. She drives strategic growth and operational excellence across South Dakota, Nebraska, and Wyoming.
Jeff Brooks
Director of Business Development
Jeff Brooks directs business development with 20+ years in multifamily management and real estate. He focuses on operational controls, compliance, and financial growth while serving on the SDHDA board.
Laura Mausbach
Director of Finance
Laura Mausbach manages financial operations with 25+ years in banking and finance. A licensed CPA, she ensures fiscal health and efficiency for Costello Companies' long-term success.
Scott Michael Dunn
CEO of Costello Compliance
Scott Michael Dunn leads compliance with 30 years in affordable housing. He authors regulatory manuals and provides expert training, ensuring compliance with HUD, LIHTC, and Rural Development standards.
Jim Schaefer
Director of Maintenance
Jim Schaefer oversees maintenance operations with 20 years of management experience. He supervises capital projects and ensures property standards across the Costello portfolio.
Questions
What services does Costello Property Management offer?
We provide property management, affordable housing development, compliance auditing, emergency maintenance, and capital improvement projects across South Dakota, Nebraska, and Wyoming.
How can I request maintenance for my property?
For non-emergency requests, contact your property office. Use our after-hours line (605-335-4335) for emergencies like flooding or heating failures.
What areas do you serve?
We manage properties in South Dakota, Nebraska, and Wyoming, specializing in affordable housing solutions for diverse communities.
Who leads Costello Property Management?
Joan Franken (Managing Director), Jeff Brooks (Business Development), and Scott Michael Dunn (CEO of Compliance) lead our operations with decades of industry expertise.
How does Costello ensure compliance with housing regulations?
Our compliance team conducts audits, provides training, and ensures adherence to federal and state standards like LIHTC, HUD, and Rural Development programs.