It's interesting you would ask that question. Let's think about that:

We've been working on it for 20 months now on the weekends.

We've only probably worked on average every other weekend.

There's 4.3 weeks in a month and 2 days per weekend so...

(4.3x2x20)/2 = 86 days at an average of 8 hours a day = 688 hours for two people so that's a total of 1376 man (woman) hours spent. And if you figure Mrs. Irish and I are (On a good day) worth about $20 per hour as carpaplumbatricians then we've invested about $27, 520 in sweat equity in the damn place.

And that doesn't include time I've spend drawing the plans, sketches, figuring out stuff, shopping for supplies, packing and unpacking stuff that we have to provision every time we go up there.

Hell... Now I wish you hadn't asked that question. That's a lot of man-hours!