The new co-located store opened in Basing View on Thursday November 12, following more than a year of building work on the site.
Realising that her flat in Skyline Plaza offered the perfect view across the site, Davinity Powis decided to take one photo of the site every day starting last summer, resulting in a video that shows the construction process in fast forward.
Miss Powis, 41, a software developer, said: "There are around 600 unique photos crammed into two minutes.
"Every day I would quickly go out to my balcony and try and get the camera in the same place to take the pictures.
"There were a few foggy days recently which adds to the video. I've never done anything like that before. I thought it would be a nerdy thing to do."
Miss Powis only recently returned from a charity trip to Masiphumelele, a village to the west of Cape Town in South Africa, where she had been building an orphenage, classrooms and toilet blocks with the Mellon Educate group.
And her work recording the John Lewis and Waitrose construction in the end allowed her to gain even more support for the cause after she offered the footage to the contractors for their website and they made a donation to the charity in return.