Numbers & Deals · Arthur the Developer
How I Made $300K on This Lot Instead of $100K (Single Family vs Fourplex)
How we chose between a single family and a fourplex on the same lot, and the four variables that decided it.
Full guide: Numbers & Deals →What we cover
- The Rule of 20 we use to cap what we pay for land
- How the comps tell you what to build, not what you like
- Reading rental demand before committing to more units
- How buyer pool depth affects your exit
- The zoning code trick that can unlock more units than expected
Watch the full breakdown above, then keep going with the related videos below.
Ready to stop watching and start building?
Join the BuildUp Challenge and book a call with our team.
Join the BuildUp ChallengeWatch more on Arthur's channel.
Your next step
Where are you right now?
New to development
Start with the BuildUp Challenge
A step-by-step challenge to line up your first deal, with our team beside you.
Join the ChallengeReady to build
Talk to our team
Development consulting for people ready to put a real deal together now.
Explore consultingFree Resources
Tools to start with.
The templates, guides, and live sessions we hand every new member.
Cost to Build by City
Real 2026 build costs for 43 US markets, from Arthur's own price map, with a live profit calculator.
Explore →Free PDFThe 7-Step Developer PDF
The complete roadmap from land to sale, free.
Get it →Free AccessThe Vault
Free resources and every member story in one place.
Get it →Live WeeklyWealth Builder Masterclass
Live masterclass, weekly on Tuesdays. How to become a developer even with zero construction experience.
Get it →Free TemplateOff-Market Letter Template
The letter we use to reach lot owners directly, plus the training to use it.
Get it →Starter KitOur Starter Kit
Everything you need to get moving on your first development, in one place.
Get it →Free CourseThe Free Development Course
Our full 2.5-hour course on becoming a developer, land to exit, free on YouTube.
Get it →