This mod is made by the request of DeadFlagBlues and with his help (he gave me wonderful HD SAHP textures).
He wanted me to release this as a standalone "police station mod", but you have to know that it is the part of DeadFlagBlues's SAHP Immersion Pack and you just can't install this mod if you don't have any stuff from there!
Of course, you can. I'm not telling you what to do, I'm recommending an excellent work made by my colleague.

Hundreds of people on lcpdfr.com are aware of the modding theme I've chosen a year ago. Script modding, yes, you're right. Oh, stop! NO, POLICE STATION MODDING!
And I continue making people happy by presenting the brand...new...SAHP Office in Paleto Bay, Blaine County, SA! *fireworks sound*
Now there is a building that explains us why we may sometimes see that guys on the white motorcycles ordering us to stop our fast-going vehicle.

Features:
CHP Offices-based building with lots of SAHP stuff:
*Weathered SAHP logos on doors and billboard.
*San Andreas Republic flag instead of LSSD one.
*White cleaned lamps (I mean without any signs, not the dust).
*American flag on the wall (yes, I know how it looks like, but R* see it different).
*Nice marble block with metal signs, which have specular and normal mapping.
*Interior signs (one made in style of CHP font; the other shows SAHP motto) that "look legit" (c) DeadFlagBlues

Note that .ymap editing isn't available so I can't prevent LSSD and LSPD cars spawning on the parking.

INSTALLATION

Warning: this mod is not made for using it in GTA Online!
Warning: no x64*.rpf archives used! The installation can't be complicated!

Use OpenIV to replace the vanilla files
1.Make sure you have ASI Loader and OpenIV.asi (optional) installed
2.Go to:
YOUR_GTAV_FOLDER\mods (optional - see this )\update\x64\dlcpacks\patchday2ng\dlc.rpf
Paste there the files you found in the corresponding folder (SAHP Paleto Bay 1.0a.rar\GTA V\update\x64\dlcpacks\patchday2ng\dlc.rpf)
3.Rebuild the dlc.rpf archive (Edit Mode - File - Rebuild OR click F6 - Shift+Ctrl+R)
4.???
5.PROFIT!!!
6.Close everything and start the game to check if my mod works

KNOWN BUG(S)

Nothing here :)
If anything goes wrong: use backup to restore the original files | reply to my work at its page on lcpdfr.com or gta5-hub.com | have a cup of tea with biscuits in order to settle down

CREDITS

Thanks
-DeadFlagBlues for the idea of creating this. It wouldn't be here without him and his wonderful SAHP textures. I respect him for that.
-AlexVonShep (me) for working in Texture Toolkit, Photoshop and OpenIV
-All the crew who made it possible to work in above-listed programs

Thank you for your attention!