Could you post photos of the space?

Of course

Hi Ravi, would you be interested in selling your current one? if so please reach out at 3344440241 or meredithfrye@gmail.com

There is no replacement. The cheap 42” ones are the closest in size, but they would significantly downgrade your kitchen appeal. That would lead to questioning what other downgrades were not so visible. You would be better off leaving it, and purchasing the cheap 42” for your own use while you await your new range.

Tricky situation. You could get the 40" and talk to a trusted finish carpenter about filling in the gaps. I'm a bit clueless as to what you can do about the countertops but maybe talk to a kitchen designer? The gap will be fairly small so I wonder if there's a way to blend in a strip of marble on each side? Maybe a coordinating black marble or stainless for contrast? Your other option is to offer a credit for a new range (ouch). What would the opening be if you removed the cutting board storage? Would you have room for a 48" range? I think the Lacance is a piece that even a lot of high-end buyers would be intimidated by so you could get away with a Thermador or Wolf or something similiar if the 48" works. Your kitchen looks lovely. Did the realtor offer any advice?

When we considered replacing our Lacanche with induction, we planned on having a 43" stainless steel cabinet made with a cut out for the cooktop top. We had wall ovens so didn't need to install one under the cooktop however, that would work too. I think F&F's advice is best. Buy something to use at the new house until your new Lacanche comes in.

@Ravi Nandan,

Some of our clients have done exactly what you mention, by having a stainless steel filler piece made to fill the gap on either side of the range.

Here is a picture of a 28" range in a 30" space for reference:

It's certainly possible as long as you have the right fabricator to do it for you.

Patrick