Posted: 12/06/2015 at 07:35
You can dig up and divide the chives - it's not the ideal time of year to do it, but they'll survive with a bit of tlc.
First cut them hard back and use the chopped leaves in your scrambled eggs, soup, potato salad or whatever - then dig up the clump and split it in half. Replant one half in the ground and the other in a pot. When you're in your new home and you have a site for your new herb garden, in the autumn or spring take the chives out of the pot and divide into small clumps and plant them separately. They'll be fine.
I planted mine in clumps along the edge of the herb bed and they've thickened up and form a pretty edging.
The sage can be propagated from softwood cuttings of non-flowered shoots right now https://www.rhs.org.uk/advice/Profile?pid=307 .
The thyme and oregano can also be propagated from cuttings now. You could try digging them up and putting them in pots to take them with you, if that's ok with the people buying your house - you'll have to get your convenyancer to put it in the paperwork otherwise you'll be in breach of contract - of course, if your house is rented that doesn't apply. If you're going to dig them up I'd cut them back quite hard before digging them up to lessen the work the roots have to do.
I find that rosemary takes fairly well from cuttings http://www.gardenersworld.com/how-to/projects/herbs/how-to-take-rosemary-cuttings/283.html but of course it'll be a while before they get to any size so it might be better just to buy a replacement when you're planting up your new garden.
Hope the move goes well