Local authorities are getting to know more and more about the principles of Multi-Unit Developments (MUDs) – residential developments, such as apartments, where services, amenities and facilities are shared between owners, writes David Rouse, MUDs Advisor with The Housing Agency.

The term MUD is not restricted to developments made up of apartments only. Duplexes, townhouses, semi-detached and detached houses may also be part of a MUD. The defining features are the presence of shared facilities and services, and an owners’ management company (OMC).

An OMC owns and controls the common areas of a development, including shared building structures, corridors, hallways, lifts, carparks, and gardens. OMCs facilitate the provision of shared services such as block insurance, repairs and maintenance, waste management, and security. Every owner in the development is automatically a member of the OMC.

An OMC owns and controls the common areas including shared building structures, corridors, hallways, lifts, carparks, and gardens.

Purchasing a home in a MUD, or a managed estate, is different to buying a traditional standalone house, or a house in an estate that does not have an OMC. It is important to consider the shared services and common areas that go with a managed estate having an OMC, and the duties and responsibilities arising for homeowners, and for the OMC. Guidance is available on The Housing Agency’s website under ‘Tips on Buying your First Home’.

 Instances when local authorities encounter OMCs include:

• Grants of planning permission
• Part V (soon to be Part 7) acquisitions
• Acquiring additional social homes (outside Part V) or acquiring homes for cost rental use
• Entering into arrangements with a developer to sell affordable purchase housing
• Long-term leasing
• Mortgage to rent transactions
• Taking in charge
• Regulation waste management
• Work of fire services

This list is not exhaustive. Readers familiar with the topic will probably cite plenty of other instances. We’ll reflect later in this article on some of the instances listed.

Growing component of housing: Apartments and MUDs are a growing component of the housing stock, for example:

• 33% of all housing completions nationally in 2025 were apartments.[1]
• The proportion in 2019 was 17%.[2]
• In Q1 of 2026 apartments made up 95% of housing completions in the Dublin City Council area.[3]

Understanding the basics: Understanding the basic facts of OMCs and MUDs is, therefore, becoming increasingly important for local authorities. Based on The Housing Agency’s engagement with local authority staff – through the Housing Practitioners’ Conference, in-house training for staff, and direct queries – it appears that housing personnel of most councils are familiar with the principles of MUDs. However, staff in departments such as finance, planning, engineering and roads are presented with scenarios where a knowledge of MUDs is helpful.

Shared services and facilities: The shared services and facilities associated with apartment living are better understood than was the case a decade or two ago. In most cases, homes that are part of a MUD are subject to legal terms and conditions contained in a head lease (sometimes referred to as a ‘main lease’).   This is an important legal document.

The head lease is an agreement (or a contract), made between the developer, the OMC, and the individual property owners in the estate (who, as noted earlier, are also members of the OMC). The head lease, which shows proof of title (or ownership) of a property, sets out the rights and obligations between the parties; these are often referred to in the lease as the ‘covenants’.

Leasing: In their engagement with MUDs, local authorities should give careful consideration to the terms of head leases and house rules. Typically, all owners and sub-lessors in MUDs are bound by the terms of the head lease. The head lease usually defines the parts of land or buildings owned by individual homeowners, and the parts owned by the OMC.

With the help of a legal advisor, by reading the terms of a head lease, owners in a MUD, including local authorities, may understand matters including:

• Whether homes are owned outright (often call ‘freehold’), or through a leasehold arrangement;
• The extent of involvement with the OMC and the other owners in the development, and
• Obligations owed to the OMC by individual owners: responsibilities such as contributing to the OMC’s annual budget or adhering to certain restrictions on making changes to the property.

Even standalone houses in MUDs benefit from access to certain shared spaces and services controlled by the OMC. Examples include internal roads and footpaths; lighting, gardens, green spaces or playgrounds; waste collection; security services or installations such as gates or CCTV; or public liability insurance associated with shared spaces.

Management charges: Typically, these facilities are provided and maintained by the OMC, and are funded through annual management charges, which may include a contribution to a sinking fund.

In most cases, the terms of the head lease and other title documents determine how homeowners contribute to the costs of upkeep of shared spaces, and the provision of shared services.  An OMC is required to issue an annual budget for these costs, and an annual report.

These documents should explain how annual management charges are calculated, how costs are apportioned to individual properties, and the detail behind the running of the estate- information essential to local authorities’ budgeting for long-term costs of homes they own in MUDs.

Taking in Charge: It may be that there are parts of the estate that have been, or are due to be, taken in charge by the local authority. Understanding the areas of the estate taken in charge by the local authority, and the parts owned and controlled by the OMC, helps owners to appreciate how the associated costs of upkeep of the estate are funded.

Insurance: In most developments that have a mix of houses, duplexes, apartments, and commercial or retail properties, the provisions of the head lease will determine who is responsible for insuring the buildings, and other parts of the estate.  Depending on the terms of the title documents, it may be that owners of standalone houses, or commercial premises are responsible for arranging their own building insurance cover.

Newsletter for MUDs and OMCs: The Housing Agency recently launched MUD Matters, a newsletter for people involved with MUDs and OMCs. To subscribe to this newsletter, visit the Agency’s website at www.housingagency.ie/mud-matters-newsletter

Housing Agency Outreach: The Housing Agency’s work supports sustainability, good governance, and best practice in the MUDs sector. In September and October 2026, it will hold evening networking and information meetings for stakeholders in MUDs. Local authority staff, directors of OMCs, homeowners, service providers, and other interested parties are invited to attend.

The sessions will cover:

• Self-directed networking and knowledge sharing amongst participants
• Challenges faced by OMCs & managed estates
• Roles and responsibilities
• Resources available

Meetings will take place on Wednesday evenings on the following dates:

Registration, free of charge, is required to attend. Details will be available via The Housing Agency’s MUD Matters newsletter and on its website www.housingagency.ie. To contact The Housing Agency’s MUDs team, email MUD@housingagency.ie.

About the Author: David Rouse, MUDs Advisor with The Housing Agency, engages with stakeholders in the sector, including local authorities, AHBs, professional bodies, state organisations, OMCs, and residents. David is a Fellow of Chartered Accountants Ireland, and is a Business and Law graduate of UCD. All views expressed in this article are those of the author.

REFERENCES:

[1] CSO, New Dwelling Completions Q4 2025 www.cso.ie/en/releasesandpublications/ep/p-ndc/newdwellingcompletionsq42025/

[2] New Dwelling Completions Q4 2019 www.cso.ie/en/releasesandpublications/er/ndc/newdwellingcompletionsq42019/

[3] New Dwelling Completions Q1 2026 www.cso.ie/en/releasesandpublications/ep/p-ndc/newdwellingcompletionsq12026/