• Sun Valley
  • Canoga Park
  • Hawthorne
  • Sylmar
  • Anaheim
  • La Crescenta
  • Vernon
  • Pasadena
  • Seal Beach
  • Tujunga
  • Alhambra

Anni Chakmakchian and Rita Tahmasian are the founders of Limitless Investments Inc/OSIS Building Services and have been in the real estate, building and design markets for over 15 years.  Co-founder Anni Chakmakchian is a certified inspector with the International Association of Home Inspectors NACHI (#13100807) and is also a General Contractor (B#987065) who adheres to highest standards of practice. Rita Tahmasian is a professional Home Stager, Interior Designer, and Construction Building Designer. Rita's staging aesthetic is modern, elegant and froward thinking. Osis

is a 100% women owned business which prides itself with good ethics and honesty. 

"The staging Osis did for my home couldn't have been more perfect"

  • Santa Monica 
  • Culver City
  • Marina Del Rey
  • Palmdale
  • Santa Clarita
  • Valencia
  • Glendale
  • North Hollywood
  • Long Beach
  • San Pedro
  • ‚ÄčToluca Lake


"The customer service at Osis is phenomenal. I highly recommend these guys, I mean girls "

"Osis really know's their stuff.  So happy with the quality of work they provided"

Don't see your city? No problem. Osis covers all of southern California.

Armen G., Manhattan Beach, CA

  • Palm Springs
  • Arcadia
  • Monrovia
  • Rancho Cucamonga
  • Inglewood
  • Compton
  • Eagle Rock
  • Burbank
  • Studio City
  • Sherman Oaks
  • Van Nuys

"Hands down the best home inspection company in Los Angeles"

See What Our Customers Say About Us.

Cities We Serivce

"The best man for the job is a Woman!" 

Jim Olsen- Home Owner, Glendale, CA

Andrew Baker - Pasadena. CA 

About Us

Patrick Jim - Home Owner, Chatsworth CA