Lead research & qualification: build a targeted prospect list

I run an architecture and BIM studio. We work with companies in the construction and design space, and I'm building a targeted outreach list. I need someone to find and qualify around 100-250 companies that fit a specific profile, plus identify the right decision maker at each one. This is not a data scraping job. Pulling a few hundred companies from a database is the easy part and I can do that myself. What I actually need is judgment. The companies I want share a particular characteristic that can only be assessed by looking at each one properly, reading how they present themselves, what services they sell, and how their team is structured. Some firms will look like a match on paper and be immediately disqualified once you look closer. Filtering those out is the real work. I'll share the exact profile, the qualifying criteria, and the disqualifiers privately with shortlisted candidates. Broadly, the target is small to mid-sized companies in the US, UK, and Canada in the construction and reality capture space. What you'd deliver A clean Google Sheet with roughly 100-250 qualified companies. For each one: company and contacts name and related information but especially a short note on why they qualify. Use whatever sources work best, LinkedIn, company websites, industry directories, job boards, association member lists, trade publications, or anything else you find effective. I care about the quality of the output, not the method. Before awarding, I'll ask you to complete a small paid test of 5 companies ($10) so we can both check we're aligned on the criteria before you commit to the full job. I'll send the detailed brief to shortlisted candidates. To apply Start your proposal with the word PLASMA so I know you've read this. Then tell me: when you're qualifying a company against criteria that aren't visible in a database, what's your process for figuring it out? Give me a concrete example from past work if you have one.