Established in 1983, ASW Property Services Limited (formerly A.S. Wellington Building & Maintenance Ltd) is an indigenous Welsh company providing specialist construction services. We deliver a wide range of maintenance and refurbishment services to Local Authority, Housing Association and private commercial clients across the whole of Wales and the South West.

Centrally located in South Wales, we provide a national service using locally based people, working in partnership with our clients to deliver a wide range of improvement programmes, including:
- Reactive maintenance, including 24/7 emergency response
- Planned maintenance works, including kitchen and bathroom refurbishments, plumbing and central heating installation, electrical installations and upgrades, EWI schemes and external works
- Void refurbishment works
- Disabled adaptation works
- Fire safety works, including fire compartmentation, cladding and fire door installation and maintenance
- Retrofit systems such as External & Internal Wall Insulation, PV, solar, IES and IR heating
- Facilities management services
- Other specialist refurbishment and improvement works
Specialists in occupied homes
We specialise in delivering works to the Welsh Housing Quality Standard in occupied properties, using a trained and experienced multi-skilled workforce. Currently 85% of our work is carried out in occupied properties, for tenants from a wide range of backgrounds and with a diverse range of individual needs. Our workforce – including female carpenters and team leaders – is supported by a dedicated, professional team providing customer service and tenant liaison management.
Accredited and assured
We are fully ISO 9001:2015 accredited, hold Acclaim SSIP status and are PAS 2030 accredited for External Wall Insulation works. See all of our accreditations.
A turnkey approach
At ASW, we take pride in our turnkey approach to contract support. With a commitment to excellence, we offer a unique advantage by providing both electrical and mechanical disciplines in-house. Combining our expertise in these areas ensures seamless coordination and efficient execution for our clients.
Our team is equipped to handle diverse project requirements and offers an integrated solution under one roof – delivering convenience, cost-effectiveness and streamlined operations.
A selection of our current major clients can be found on our Our Clients page.