Tons of equity but can't touch it

[Dave Fairb]

I've owned my house for 13 years. Have 2 lines of credit for 180k total and have around 20k still available (used 160k) . Have mtg for 620k. 

House would sell for 1.45 to 1.6 depending.  So around 670K + in equity. Maybe as much as 750k

I live in the house. I rent out the basement and 3 students upstairs. The rents I collect pay the bills + mtg. And I live here at no cost to myself and have about $400 left over, and also about 1200 a month is paid off the principal of mtg. I also have a secure garage that I run my handyman business out of.

I got my house before the banks crashed in 2007/8 and at that time as a self employed, I could state my own income, without verification! (in Canada) 

There's no way I would qualify today, and as I live off the rents and some self employed income quite easily, my net income is very low. 

I believe my house will go up in value still. I'm in Vancouver BC, I'm on an arterial route near a skytrain station. Anyone who knows Vancouver BC market will likely agree on that. 

But it's frustrating to have all the equity and not be able to have some.  Yet if I sold it and made say 700k, I'd have to find a spot to live, and a 1 bedroom condo on the cheapside of town is about 500k, with no garden, no workshop etc... a serious downsize. On plus side I'd be free to do things without having to take care of tenants etc.. But it might actually be boring without all that? Hard to say. 

If I never sell it, then what exactly was the point in buying it and all the hard work of the last 13 years?

All my efforts of the previous 17 years (time that I've been in real estate) are tied up in the equity of this house.

Any thoughts appreciated.