Any referrals for a licensed plumber

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Hi there, looking for a licensed plumber to plumb a 900 sq ft house and a detached carport w/bathroom. I've mailed out two request for quotes, but so far haven't had any luck with anyone returning my calls. Duly noted, Rumi In Hawaii didn't have a recommendation for a plumber []. This has been the hardest part of our building process so far! Appreciate any referrals, thanks much!

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