I finally have the means to build a shop. All I need to do is decide
where to put it.

I currently have a somewhat cramped two-car garage that is 19-feet on
a side. It's already hard to get around w/ two cars and all the junk
I have in there, so I was already planning on building a shed to hold
all of the lawn equipment and sporting stuff.

Of course, instead of using the shed for simple storage, I could use
that for my workshop instead. Here are the pros and cons I can come
up with. Additional advice will be greatly appreciated!

Garage:

+ Can use up to 361 sq ft of space for projects.
+ Sub-panel in garage has room for 7 more circuits.
+ Easy access for bringing in tools & wood.
+ Easy access to house amenities (fridge, bathroom, etc.)
- Will only be able to fit one car once machines and
benches are lining the sides.
- Panel may not accomodate 240v circuits (need to check).
- Garage is part of house, so it will be noisy.
- No windows in the garage, so natural light only
available when door is open.
- All of my lawn equipment will be back in the woods,
away from the front lawn.

Standalone workshop:

+ Dedicated space. Lots of good things about that.
+ With a gable roof, I can store lots of things overhead.
+ I can put in a bunch of windows for natural light.
+ Easier to insulate than the garage.
- Max 200 sq. ft. (as per local codes).
- I would need to pay an electrician to run new service.
- Less accessible. It would be ~150 feet from the road.

If I did go the standalone route, I have a couple more questions:

* Slab or wood floor? Skids or post-and-beam for a
wood floor?
* Any issues w/ the environment in a weather-proof,
but HVAC-less shed? Will I have issues with rust, etc?

Many thanks in advance for any experiences or advice you can share!

- Josh