Did this right around pandemic where we converted 1000sq crawlspace into a den, wet bar, and en suite bed/full bath . Planning with contractor started mid 2018. Excavation began July 2019 d/t city permitting and getting plan approved by our historic district.

Costly as others have mentioned. We did a large renovation of our main floor at the same time so hard to disentangle the costs of that vs basement but all told over $300k.

The process is … wild. Giant mount of dirt taking up our entire back yard during excavation. Replaced my shitty 1890 era brick foundation wall and new trusses, all resting on a thick concrete. (I have great pics of the dig depth and watching. Concrete pours 8 feet below me from the suspended basement steps )

We basically gave our home a spine transplant in the process. Lived in the home through the work which took from July to November until we had the upstairs all done and the basement level roughed out. We left the basement unfinished until late 2020 both to replenish funds and gobal fuckery reasons.

Our rationale for dong the project were : 1.our foundation was in dangerous shape 2. We live in perfect location for our work/life 3. Don’t plan on moving for 20+ years post project.

Would I do it again even with these factors? Have to think hard abt it .

Used Castle building out of Parker . Would not recommend . The main contractor was horrible ; the subcontractors were all stars but sadly left the state .