Srilanka-Places.com has listed approx 5 Interior architect offices in Colombo 00300. Some of the Top rated Interior architect offices in Colombo 00300 are- Interior Design Colombo . ATELIER X, Interior Design Colombo . ATELIER X, Interior Architect Colombo - UDARA KARUNATHILAKA, Interior Architect Colombo - UDARA KARUNATHILAKA & Co.Design.