On Sunday, November 26, 2017 at 3:22:20 PM UTC, Dave Plowman (News) wrote:
In article ,
stuart noble wrote:
Plan is to gradually replace the sliding sashes at the front of our
Victorian terraced house. There are 7 openings and, for logistical
reasons, I'm going to do a couple at a time. I can collect the boxes
(complete with weights and DG panels) locally, and there is no bulk
discount, so I plan to take my time.

Question is, do I just do them and apply for retrospective building
control certification? As the job might take 6 months, I don't want to
involve the council at the outset and find I'm under the cosh to get it
finished.

Do you really need permission to replace something like for like?
Replacing wood sash windows with some of the UPVC ones I've seen would be
a different matter.

--
*Monday is an awful way to spend 1/7th of your life *

Dave Plowman London SW
To e-mail, change noise into sound.

You can "repair" them, which includes changing the sashes, but going back to brick does need approval.
I thought about just new sashes and sill, but the price of the whole box with weights, double glazing, draught proofing and a factory finish was a much better bet.