She said more than 30 toilets in the tower block had to be relocated to make way for a fire escape route.
Renovation work in the Dewan Rakyat chamber had been completed with improved lighting and acoustics.
The 160 seats have been reduced in size to accommodate 177 MPs following the redelineation of electoral boundaries.
The major problems encountered in the renovation were, Puan Puteh said, time and money.
"We have to work with a tight schedule. Every time something unexpected crops up, for example when we discovered the termites and corroded pipes, we have to work harder to repair the damage and keep the deadline."
"Another setback in there aren't any 'as-built drawings' which are necessary to visualise the structure of the building and its system."
As a result, she said the Public Works Department and the contractors had to work closely on site.
(The PWD team involved includes mechanical, civil and structural engineers, quantity surveyors and resident architect Zuraina Leily Awalludin).
Puan Puteh added that there was a lot of probing work involved in locating the route of the plumbing and sewerage systems without the help of the "as-build drawings."
The last bit of renovation work that may drag on to next year is reflooring the first two floors of the main block.
Puan Puteh said the marble flooring would have to be done phase by phase to accommodate the parliament sittings.
"Throughout the renovation work, we try to retain as much as possible the original architecture of Parliament House," said Puan Puteh.