MITS Data Models

NMHC launched the Multifamily Information Transaction Standards (MITS) initiative to improve operating efficiencies for rental housing by developing data models and leveraging data exchange technologies. Through MITS, data transmission among software systems, both within and between organizations, is facilitated through Application Programming Interfaces (APIs) and Extensible Markup Language (XML) to allow systems to communicate in key operational areas.

RETTC is now working to modernize and update MITS by bringing together rental housing providers and suppliers to collaboratively identify opportunities for operational efficiency and transparency that benefit renters and housing affordability.

MITS is freely available for download and its use is completely voluntary.

LATEST NEWS

Working Group Activity Updates – 2025 MITS Working Group

July 2025

2025 MITS Working Group Update

As work continues to optimize the MITS 5.0 data model updates, the MITS Working Group and its two subgroups made significant progress.  

The MITS Technical Subgroup developed and presented a definition of Total Monthly Leasing Price (TMLP) to ensure support of proper display of fees a renter may incur throughout the rental journey. The MITS Working Group unanimously approved the definition:  

TMLP is the amount displayed to the consumer as their expected recurring monthly price/cost

TMLP Components:
In general terms: Base Rent w/all lease term duration options transmitted (if no lease term duration options transmitted, assume 12-month term) + Monthly Mandatory Fees.
Excluded:

i. optional fees
ii. mandatory fees not charged monthly
iii. variable fees without explicit values

The MITS Policy Tracking Subgroup continued its work to understand and navigate the growing and complex landscape of state and local fee regulations that have been proposed and/or enacted across the nation to aide in compliance. RETTC has retained Jay Harris, RETTC Steering Committee Member & Partner at HudsonCook, to provide regular tracking and intelligence for members as they work to stay in compliance with existing and emerging fee transparency efforts. The Subgroup and full MITS Working Group will work to provide these and additional resources for RETTC members in the near future.

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Working Group Activity Updates – 2025 MITS Working Group

June 2025

The 2025 MITS Working Group Formed!

As part of the RETTC Communities launch, the MITS Working Group officially moved under the RETTC Enterprise Technology and Business Intelligence Committee and will continue its work as a working group of the committee.

The first 2025 MITS Working Group meeting was held on June 12th. The MITS Working Group determined that the priority for the working group will be to continue to focus on the MITS 5.0 data model and documentation and education helping to enable greater insight into the total cost of renting a home.

While the industry works on implementing the MITS 5.0 Data Model, the working group formed two subgroups to help further accelerate adoption: The MITS Technical Subgroup and the MITS Policy Tracking Subgroup.


Previous Updates

MITS Implementation Mapping Tool

Map your transaction/charge codes to the corresponding new Charge Classifications in the MITS 5.0 data model. This tool is powered by Cherre.

By clicking here, you will leave RETTC.org and be redirected to Cherre.com for access to the MITS Implementation Mapping Tool.

Approved MITS Data Models