I am looking for suggestions. My plan is to have tall evergreens on the property line, mix of roses, grasses, and perenials lowering down to near his driveway. Here are the conditions he has to deal with:

1. San Antonio area
2. Full sun year round. I would estimate up to 8 hours a day.
3. typical chalky soil, fast draining
4. Soaker hose for irrigation.

Need suggestions on low maintenance, drought tolerant evergreens which will grow at least 6-8 feet tall. I was thinking about viburnum, ligustrum, or Texas Sage but if someone knows something better please help.

THe only other plantings in his yard are Beautiful Mature Live Oaks, Red tips, and ground cover jasmine. Thanks.

Pyracantha comes to mind.

It's evergreen, it grows fast, it has pretty red berries, & it's got the longest, meanest thorns I ever saw.

Depending on how much ground area there is (are we talking a 6' wide bed or a 12' wide bed, etc), he might also try some rampant roses.

Mermaid is evergreen, beautiful, grows like a maniac (it's called a "house eater"), has huge, gorgeous, fragrant, sulphur-yellow roses, & thorns like vicious fishhooks.

If he feels that armaments aren't needed, some other fast-growing roses are:
Lady Banks
once-blooming, these things grow like crazy, & they'll likely be evergreen in your area.
The buttercream yellow one has some thorns, but the white one, which is fragrant, is thornless.

There's an apartment complex near me that has a very long yellow Lady Banks hedge;
it's beautiful in the spring, & they trim it only once a year just after the flowers fade.
(If you trim it after it starts to grow, you'll cut off next year's flowers.)

Rosette de Lizy;
the books all say it grows to about 4'.
Mine hit approximately 12', & it's evergreen.

Seafoam.
A thorny, evergreen plant with small, adorable white roses, it's advertised as a groundcover in the books, but, again, mine hit about 6' tall, & Seafoam spreads nicely.

I wish you & your friend the very best.

Vitex agnus-castus is absolutely beautiful and grows really fast without getting unmanageably tall. It is deciduous, though. I don't know the area you have to work with, but try to consider a mix of things as opposed to a solid wall. Try pampas grass behind or in front of something deciduous. Build a little trellis and have some vines grow up it in another section. Just some ideas. :)

It's evergreen in San Antonio, easily gets over 6 ft tall and is plenty thorny. It's pink flowers would show off beautifully planted with grey foliaged Texas sage, which gets huge too.