Buying & Selling a Home
The New Homeowner's First 90 Days: A Calm, Complete Checklist
Mea Cara · September 8, 2026 · 3 min read
The internet's new-homeowner checklists have a scale problem: eighty items, all apparently urgent, half of them about buying doormats. Here's the calmer version, prioritized by what actually protects you — and with permission to do the fun stuff later.
Week one: safety and access
- Change the locks. You have no idea how many copies of the old keys exist. Rekeying is cheap; do the garage keypad code too.
- Find the shutoffs. Main water valve, electrical panel, gas valve. Walk to each one. Ninety seconds now, versus finding the water main while the pipe sprays.
- Test smoke and CO detectors, replace batteries, and add detectors where missing (every bedroom level, and near the garage for CO).
- Locate the water heater's temperature setting — 120°F is the standard recommendation, especially with kids.
- Walk the exterior once: downspouts draining away from the foundation? Anything touching the siding? You're not fixing today — just noticing.
Week two to four: learn your house
- Photograph every nameplate: furnace, AC, water heater, and each appliance — brand, model, serial. Ten minutes, and it becomes the backbone of your home inventory and every warranty claim and recall check after.
- Note ages: the inspection report (remember it?) lists the roof, furnace, and water heater ages. Copy those somewhere you'll find again — they set your repair-savings expectations.
- Label the breaker panel if the previous owner didn't. One person flips, one person shouts.
- Change the HVAC filter and buy a six-pack of the right size while you're at it.
- Start the binder. Closing documents, inspection report, insurance policy, those nameplate photos — one place, ideally digital and searchable. Whatever you learn about this house in year one is worth keeping for year ten.
Month two to three: rhythm and paperwork
- Set up the maintenance rhythm. You don't need to memorize a seasonal schedule — you need it in a system that reminds you. Calendar, app, printed list on the furnace: pick one.
- File the homestead exemption if your state has one — it lowers property taxes, deadlines vary, and nobody reminds you.
- Review insurance now that you live there. Coverage bought sight-unseen during closing week deserves a second look: replacement-cost coverage? Sump/sewer backup rider? Enough for that finished basement?
- Meet the systems on their schedule: book the first furnace or AC service for the shoulder season, and find your water heater's flush valve before you need it.
- Collect your people. Ask neighbors who they use for plumbing and electrical before the emergency. A vetted-contractor list is one of the most valuable things a homeowner owns.
What's deliberately not on this list
Painting, furniture, renovations, and every project that begins "while we're at it." They're the fun part — and they're better decisions after you've lived in the house through a season or two. The checklist above is about protecting the purchase and learning the machine. The nesting will still be there in month four.
If you want the checklist to run itself — nameplate photos filed, maintenance reminders scheduled, documents and contacts in one place — HavenBinder's free plan was built for exactly this first-90-days moment. Welcome home.
#new homeowner #checklist #getting started