If it's a new build there is no need for thresholds anymore.

Your door supplier/pre hanger will usually supply a standard "combo threshold sill", but semi flush thresholds friendly to wheelchairs are available and I've done these. Pemko has a pretty good website display. I would make sure your door has deep weather cover for these. Also, the door will be too close to the finish floor to add a rug.

If this is a remodel, a talented floor installer will be able to make a custom transition piece to fit the location and your needs. Prefinished floors often have minimal selection of matching trim so the installer may have to choose an existing profile or possible modify a prefinished piece. A custom piece which would need to be stained and finished for a close match which would be more expensive.

If this is for a site finished floor, the options are easier as the cost to stain and finish are not a comsideration

We will need to know what the wood threshold is going up AGAINST. Is it a door, another floor (like tile) or is it through doorways (like a floating floor going from hallway to bedroom)?

@cpartist what's the option for no threshold? Between the grout and wood floor, won't the grout come "undone" after so long because it won't stick to the wood?

@SJ McCarthy it is tile that is grouted going up against solid wood floor

I attached an image of what I'm talking about (floors aren't finished yet). In the image is a saddle I picked up but I think it will be too big and bulky.

T...I told my builder day one that I wanted every floor to be totally level with other floors. No thresholds. The tile guy, hardwood guy and builder worked together to accomplish this. Why do you have to have those thresholds In new construction?

I don't think I do which is why I'm just trying to see if I can remedy my current situation. Meaning... can I leave the grout against the wood as is or can I have it like yours @ILoveRed

I have grout from tile floor against my hardwood floor for 12 years with no issues .

TCNA ANSI calls for A 100% silicone expansion joint at wood to tile transition especially critical in doorways. This is the industry standard in 2019.

look close youll see tile>grout>jolly>silicone color match to custom wood reducer .

A threshold provides weather protection at an exterior door. A saddle is a raised element that helps to close the door's "undercut" space which is needed if you have area rugs. A filler at a door between two interior floor finishes of different thicknesses is a transition or reducer strip.

I have no transition between any of my tile and my wood floors and have no issue. It's much safer too. Especially for the elderly or those with mobility issues.

And yes, that's grout up against my wood floor. I have it at my fireplace where the floor tile meets the wood flooring, the upstairs bath as shown in the photo, the master bath at both entrances where my marble tile meets my wood flooring and at my friends' entrance where my cement tile meets the wood floors.

OP - I don't know why I thought you were talking exterior. We certainly do what we can to avoid "T" strips to connect floors. As said above by tile pros, silicone, colored, is usually best.

Wow you've all been so helpful! I think I'll leave it as is... others seem to have what we do & it looks like they haven't had any issue. I was just worried it would crack out over time...