A £300,000 scheme aims to rejuvenate a community facility in Southall.
A new meeting room will be created at St George's Church in Lancaster Road, including the installation of a new heating system and toilets for people with disabilities.
The centre will also be redecorated and is expected to be back in use by Christmas. An official opening is planned for January.
Money for the new community room has come from several sources, including SITA Trust, which awarded £25,000, and the Veolia Environmental Trust, which gave £38,562.
Both grants were awarded through the Landfill Communities Fund.
Users of the current facilities include a 100-strong toddler group.
The new community room is being created because community activities were severely limited by the 100-year-old facilities in the church.
It had one only toilet, which was not suitable for people with disabilities. The heating was inefficient and there was not enough room for more than one meeting or event at one time.
The Vicar of St George's, the Reverend Christopher Ramsay, said: "St George's is a vibrant and friendly centre for the community for a wide range of activities. The new community room will allow us to extend educational programmes and community facilities for children and accommodate various community groups.
"Once it is complete, the new schedule of activities will include language classes for adults, expanded parent and toddler groups, dancing groups, daily breakfast and after-school clubs, and holiday clubs for children. It's great to see the scheme take shape and near completion."