By Tara Williams
The full custom build timeline from contract to keys — every milestone in order, what happens at each one, and what Johnson County buyers should check.
Building a home is really a series of decisions that arrive in a specific order — and the buyers who love the process are the ones who knew what was coming next. I've walked clients through builds all over Johnson County, from Overland Park to Stilwell, and the question I hear most isn't about granite or paint. It's simpler than that: "What happens next, and what should I be paying attention to when it does?"
So here it is — the whole custom build timeline, milestone by milestone, in the order it actually unfolds. Bookmark this one. You'll come back to it.
Milestone 1: The Contract
Everything starts with a signature, and this is the moment with the most leverage you will ever have. Builder contracts are not the standard Kansas resale agreement — every builder writes their own, and it was drafted to protect them, not you. Before you sign anything, read my breakdown of the seven builder contract clauses to understand before you sign. Escalation clauses, allowances, delay terms — this is where good builds are won.
What to check: allowance amounts against real Johnson County pricing, the delay and escalation language, and exactly what your earnest money is doing while the home is under construction.
Milestone 2: The Lot
Your lot decision outlasts every finish selection you'll ever make. Walkout, cul-de-sac, greenspace backing, east-facing deck — each carries its own premium, and those premiums range from modest to eye-watering. I wrote a full guide to how lot premiums work in Johnson County because this is the milestone where buyers most often overpay or, just as costly, underbuy.
What to check: drainage and grading plans, what's platted behind you, and whether the premium you're paying will still make sense at resale.
Milestone 3: Design and Selections
This is the fun part — and the budget part. Structural selections come first (they're the ones you can't change later), then finishes. My rule with clients: spend on what's expensive to change and relax on what isn't. Not every upgrade earns its money back, and I've broken down which builder upgrades are actually worth it at resale so you can put dollars where they'll still matter in year ten.
What to check: a written selections deadline calendar, and the change-order fee schedule before you fall in love with anything.
Milestone 4: Permits and Site Work
Quieter weeks. The city reviews plans, the lot gets staked and cleared, utilities get roughed to the site. In most Johnson County municipalities this runs smoothly, but it's the first place a timeline can quietly slip.
What to check: ask your builder for the permit submission date and status — not just "we're waiting on the city."
Milestone 5: Foundation
Footings, walls, waterproofing, backfill. Kansas clay moves, so foundation quality matters here more than almost anywhere in the country.
What to check: third-party foundation inspection before backfill. It costs a few hundred dollars and it's the cheapest insurance you'll ever buy.
Milestone 6: Framing and Mechanicals
The house appears in weeks, and suddenly it feels real. Framing is followed by HVAC, plumbing, and electrical rough-ins — the systems that will live inside your walls forever.
What to check: walk the house with the plans. Window placements, outlet locations, island dimensions — this is when moving things is still cheap.
Milestone 7: The Pre-Drywall Walk
If you only show up for one mid-build milestone, make it this one. Once drywall goes up, everything behind it disappears for the life of the home. I feel strongly enough about this one that I gave it its own guide: the pre-drywall inspection checklist covers exactly what to photograph and question, room by room.
What to check: everything — and bring your own inspector. Photograph every wall before it closes.
Milestone 8: Drywall, Finishes, and the Punch List
The longest-feeling stretch. Drywall, paint, cabinets, tile, flooring, fixtures — and the inevitable punch list of touch-ups. Quality builders expect a punch list; it's not a red flag, it's the process.
What to check: that punch items are documented in writing with completion dates, not handled as hallway conversations.
Milestone 9: Final Walkthrough and Closing
The last walkthrough isn't a ceremony — it's your final inspection with leverage still in hand. My final walkthrough punch list walks you through testing every system before you sign the closing papers. Then: keys, garage codes, warranty documents, and the start of your one-year warranty clock.
What to check: every faucet, every appliance, every door — and get the warranty procedure in writing before you leave the table.
The Thread Running Through All Nine
Notice a pattern? At every milestone, the buyers who do well are the ones with someone in their corner who has walked this road before. The builder's sales agent is lovely — and works for the builder. Having your own agent on a new build costs you nothing, and it means every one of these checkpoints gets a second set of experienced eyes.
If you're thinking about building anywhere in Johnson County — Overland Park, Leawood, Olathe, Stilwell, or one of our master-planned communities — I'd love to walk this timeline with you. Reach out and I'll put together a milestone calendar for the specific builder and community you're considering, so you always know what's next and what to check when it arrives.
Ready to make your move?
Tara Williams specializes in relocation to Johnson County, KS. Schedule a free consultation today and let's find your perfect home.
Schedule a ConsultationThinking About Making a Move?
Get personalized guidance from Tara — no pressure, no fluff.
