Try posting on the kitchen and bath forums also as I know the tiling experts frequent there all the time. Sorry, I don't have a clue how to help you.

I'm confused...why not just place the tile in the same direction as it goes around the bend? The edge of the tile doesn't need to be square with the wall. You have to cut each tile that abuts the wall on an angle.

The problem is that when you enter the house the pattern is basically square, but when you turn and go down the hall the tile is on a diagonal. We thought of just laying a square pattern but it still makes the hall go on diagonal. We thought the staggered would be less noticable.
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I am trying to visualize the look of the diagonal pattern touching the straight, even with the decorative divider.

I am trying to visualize the look of the diagonal pattern touching the straight, even with the decorative divider.

Are you talking about at the front foyer change just past the stairs? If you are standing in the foyer, the floor stays the same, the wall is the only thing that changes....and it runs into the hallway (which I now think it what you are talking about) and does not change.

I would not do a decorative divider, but continue it all the way through. Your tile guy will decide where he needs to start and go from there. We did this with the travertine flooring in our home - it goes from garage door, into hallway, laundry room, coat closet, kitchen, breakfast room, tiny hallway/area, pantry, powder room and into sunroom. All continuous. No changes or decorative dividers.

Yes but are your rooms all 90degree corners? I could have my entire house done in tile and the entire house would be same pattern except in this area. The entire house would be diagonal but this one area would be square or the entire house would be square but this area would be diagonal. You will see that when you enter the house, it is square, but if you enter house from kitchen or garage you are walking diagonal. It seems weird to me.

And we are the tile guy. Even if we had a tile guy, we have to live with it. We have had so many experts tell us there is no solution. This is why I want to see if anyone has any patterns that change and use a decorative strip to separate them. Or better yet, a clever way to transition from one pattern to the next.

We just completed tiling our main entrance (foyer) that has a 90 degree turn to a hallway -transitions to hardwood in FM then another 90 degree to the hallway to the garage, power room, laundry. (Shannon we just-re did our Fireplace marble tile/ Kozy Heat - we are on the same long schedule, in the same order :)
We originally were going to go with the brick pattern you have selected, but in the end, did not because of the turns, different direction of the tiles and the different widths of the areas involved. We did use an excellent tile guy and he was having trouble making the math/ layout come out so it would look right.
I think using the brick pattern in your area may look very disjointed. The angles force the tiles on the diagonal and the grout lines are going to be too busy and confusing - no continuity.
Have you considered a true diagonal thru out the entire area?
A straight pattern would allow the grout lines to continue straight (I think)
What size tile are you using- I missed it if you said - sorry.
I did a rug pattern in our foyer - just to help break up the staight pattern- you may want to consider it.
The John Bridge forum is great for tile advice.

How about if you pick a different tile (darker or different color) and make a border around each area?
A border all around the foyer then another around the hallway.

I would use the biggest tile you can find and run it on a diagonal starting in the foyer.

Thanks all. We literally layed out all the tile last night. We layed out the insert also and glad we did. We discovered that it caused the first row of tile to be layed a certain way so that the staggered look could flow properly. We also decided to start the staggered look at the foyer, horizontal to the door. Where the foyer turns we will lay a decorative strip to divide where the two patterns meet. Then we will start the stagger at the garage door, also horizontal. When you stand at the T in the hall/foyer you can see the horizontal staggered pattern at both doorways. By having the stagger in hall be at the turn in foyer rather than ending at the T, it allows the hall to look bigger. Having the transitional decorative strip at the T seemed to chop the hall off too much. From way up on the stairs looking down at the tile, the strip looks good. The bath and laundry will now have a staggered look rather than a diamond angle. I will post pics when done.

Magothyrivergirl- Hope you read my post in fireplaces about the paint issue I had with KozyHeat. It was a nightmare that at least got resolved. Considering a granite tile fell off wall onto the back of my head, resulting in several staples- ouch!- I was not pleased to come across this paint issue. But in the end it looks really nice. I will post pics of that once I get he floors all done.

What about using a decorative tile to create a transom so that you can begin anew at the hallway point?

You could use the same decorative tile to create a frame detail (decorative square) by the front door (foyer effect?), or maybe repeat at the other doorways so that it doesn't look like it's just plopped there, but rather a cohesive decorative detail?

Not an expert, just sharing what popped into my head when looking at your drawing :).