Mr Jourdain said one of the challenges for congregations everywhere concerning earthquake regulations was this "awful tension" about whether it was worth spending money upgrading buildings for the size of their congregation.
"But this church at Westmere is a great example of where there's a vibrant congregation that has been growing and is looking to serve its community. It really is one of the good news stories," he said.
He said it took a lot of money to strengthen and restore buildings and people debate whether it was the best use of the money.
"This is a tension all churches are facing but this is one which has a strong sense of vision of what they want to do," Mr Jourdain said.
The last stage in the church's rebuild will involve the installation of stained glass windows at the northern end of the building.
That's expected to be completed in time for a special service the first Sunday after Anzac Day next year. As one of the very few war memorial churches in the country, it qualified under the Lottery World War One Commemoration, Environment and Heritage Committee rules. The intention was to have the church upgraded in time for Anzac Day services this year but delays in the project pushed that out to 2016.
Yesterday's service took on a special meaning for the Wanganui branch of the Merchant Navy Association with the church becoming the new home of the association's Red Ensign, lifebuoy and wreath.
The second and final stage in the project will include a covered courtyard and entry between the church and existing hall, a parish office and a minister's office.