Final answer:
The three selection methods used to buy construction services are competitive bidding, negotiated procurement, and quality-based selection.
Step-by-step explanation:
The three selection methods used to buy construction services are:
- Competitive bidding: This method involves issuing a request for proposals (RFP) or an invitation for bids (IFB) to multiple potential contractors. The solicitation instrument used here is typically an RFP or IFB document.
- Negotiated procurement: In this method, the buyer and contractor negotiate the terms and conditions of the contract, including the price. The solicitation instrument used here is a negotiated procurement agreement detailing the negotiated terms.
- Quality-based selection: This method focuses on selecting the contractor based on their qualifications and past performance rather than the lowest bid or negotiated cost. The solicitation instrument used here is a request for qualifications (RFQ) document.