If I wanted a backyard guest house, how deep would my pockets need to be?

- Totally agree on the city requirements - those can really sneak up on you.
- My prefab kit looked simple on paper, but once I hit the permitting stage, costs started stacking up:
- Solar conduit (even if you’re not installing panels yet)
- Fire sprinklers (surprisingly pricey to retrofit)
- Utility trenching (ran into a mess of old irrigation lines)
- DIY finish work saved me maybe 10-15%, but it ate up weekends for months.

Curious - did you run into any issues with inspections or code changes mid-project? That’s where I got tripped up and had to redo some electrical...

Inspections were a bit of a rollercoaster for me, honestly. I’d mapped out the whole project thinking I was ahead of the curve, but midway through, the city updated their energy efficiency standards. Suddenly, my insulation plan wasn’t up to code. Had to scramble to source new materials and get everything re-approved. Not fun.

Electrical was another headache - one inspector flagged my subpanel location even though it had passed rough-in just a week earlier. Ended up moving it a few feet to keep everyone happy. It’s wild how much can change mid-project, and it’s not always clear who’s responsible for communicating those updates.

I hear you on the DIY finish work. It’s a trade-off: you save money, but man, it eats up your time. Looking back, I probably underestimated how much coordination with inspectors would slow things down. Still, once it’s done, there’s a real sense of accomplishment... and a lot more knowledge for the next one.

Man, I totally get where you’re coming from. Those mid-project code changes are brutal - feels like you’re playing a game where the rules keep shifting. But honestly, you handled it way better than most would. The finish work is a grind, but you’re right, the payoff is huge. I always remind myself: every hiccup now means less stress next time. And hey, saving money with DIY is worth a few headaches, at least for me... even if my weekends disappear for a while.

Honestly, the first time I built a backyard guest house, I thought I’d budgeted enough... but man, those little surprises add up fast. Permits, utility hookups, and just the sheer amount of finish work - none of it’s cheap. I’d say you’re looking at anywhere from $80k to $200k depending on size, finishes, and how much you DIY. I tried to cut costs by doing some of the work myself, but my weekends vanished for months. Still, renting it out now covers the mortgage, so in the long run, it was worth every headache. Just be ready for a few curveballs along the way.

That price range sounds about right, though I think you can sometimes get closer to the lower end if you’re really disciplined with finishes and keep the footprint small. One thing that caught me off guard was the cost of running new sewer and water lines - permits were just the start. If you’re in an area with strict codes, expect a lot of back-and-forth with inspectors too. I spent weeks just sorting out utility trenching... definitely not something I’d budgeted enough time or money for. If you’re handy, DIY can help, but it’s a serious time commitment.