The* Malaysian* government* has* highlighted* liberalization* for* seventeen* (17)* service*subKsectors*in*phases,*including*architectural*and*engineering*services.* Liberalization* offers* opportunities* to* transfer* of* capital,* expertise,* and* technology* to* domestic* firms* to* expand* business.* As* a* result,* the* local* Engineering* Consultancy* Practices* are* facing* challenges* in* enhancing* their* competitiveness* in* sustain* their* business* in* the* industry.* In* a* sense,* proper* business* model* is* one* of* the* main* criteria* to* enhance* the* business* performance.* This* paper* aims* to* contribute* to* this* overlooked* but* important* research* line.* Semantically,* this* paper* comprehensively* reviews* the* Engineering* Consultancy* Practice* business* model* from* various* aspects* and* applications.* The* preliminary* finding* reveals* that* the* concept* of* developing* new*ECP*business*core*values*is*essential*to*enhance*the*existing*ECP*business* performance.* Eleven* (11)* business* model* core* values* are* introduced* in* this* study,* verified* through* systematic* triangulation* analysis.* The* outcome* can* be* used* to* become* a* guideline* for* the* engineering* consultancy* practices* in* Malaysia.