Answer: I'm really sorry about your tree. You may actually find it more practical to replace it with a purchased tree after the constructions project. These trees are sometimes grown from seed, but the seeds (if your tree is female) will not be ripe until much later in the year. Commercially, these trees are often grafted but that is not practical at home unless you have access to rootstocks. They can also be tissue cultured but this requires special equipment and a certain level of expertise. So you might be able to propagate it in June using tip cuttings. The cuttings however can sometimes take over a year to root, so this is not all that easy to do either. Here are instructions you may find interesting.
Here are general instructions on how to do cuttings.
(You may need to cut and paste the url into your browser to make it work correctly.)
You might also consider layering.
Good luck with your project!
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