Year-one rental disappointment rarely comes from one dramatic disaster.

It usually comes from quiet lines that never made the listing photos: a turnover that takes longer than the flyer implied, a make-ready between tenants, a capital expenditure (CapEx) item you treated as optional, an insurance gap you discovered after the claim, or a lease that looked standard until the first dispute.

This post walks those costs on the same sample property, 1847 Birch Lane, so you can budget them before they erase the cash-flow stack you built in the earlier posts.^[1] The math stays simple on purpose. What matters is noticing each line while you still have room to fund it.

Turnover is a mini vacancy project

Stabilized underwriting often uses a vacancy percent — a tidy annual allowance. Real turnover is a project with calendar days and checks: notice period, showings, screening, cleaning, repairs the prior tenant did not own up to, and days until the next rent start. Renters notice the empty stretch as soon as the last month’s rent stops; your sheet should notice it the same way.

Example turnover on Birch Lane:

• Notice to empty: 18 days of overlapping search (good case) or 0 if they leave abruptly

• Make-ready between tenants: $2,400 (paint touch-up, carpet clean or replace one room, lock change, smoke detectors)

• Days vacant between rents: 35 days in a normal case; 60 days in a slow season

At $1,700/month, 35 empty days are about $1,983 of rent not collected ($1,700 × 35 ÷ 30). Add $2,400 make-ready and you have roughly $4,400 of year-one damage from one ordinary turnover — before advertising or application-fee netting.^[2]

If your “cash-flow positive” year only survived by $2,000 on paper, one ordinary turnover can wipe that margin. That is not bad luck so much as an underwrite that treated vacancy as a percent and forgot the project nature of a turn.

CapEx reserve is not optional furniture

CapEx means capital expenditures — the roof, HVAC, water heater, electrical panel, sewer lateral, driveway, and the appliances that tend to fail as a set. Spreading those costs as a monthly reserve keeps year six from looking like a sudden crisis you could have reserved for.

On Birch Lane we reserved $150/month ($1,800/year) in the cash-flow stack walkthrough. Check whether that matches age and condition on the house you are buying:

Spending the reserve on granite you did not need is how people “have no CapEx money” when the condenser dies. Keep the reserve boring. Budget tracking helps ring-fence CapEx from cosmetic upgrades so the roof fund stays a roof fund.

Optionally, some operators put a home warranty on each rental. That line adds up fast across a large portfolio, so use it judiciously where system risk is high — and know that multiple claims with one provider can push your annual rates up.

Insurance gaps that show up after the claim

Landlord policies are not homeowner policies. Before you paste last year’s owner-occupied premium into the rental sheet, confirm at least:

• Dwelling coverage on a landlord form

• Loss of rents endorsement if you need income continuance after a covered loss

• Liability limits that match your risk tolerance and umbrella

• Water backup, ordinance/law, and wind/hail deductibles where your market requires them

• Vacant-building conditions — some policies restrict or cancel if the home sits empty too long during make-ready^[3]

An uninsured water backup or a vacancy clause you breached can turn a repair into an equity event. Price the right policy in the stack the same way you price taxes and management — as a line you expect to pay every year, not as a surprise after the claim.

Lease terms that protect cash flow

The lease is where cash-flow protection becomes operational. Without giving legal advice for your state, a useful habit is to read the form like a cash document and look for:

1. Clear rent due date, grace period, and late fee that your jurisdiction allows.

2. Security deposit handling that matches statute — amount, bank, deadlines, deductions.

3. Maintenance responsibility split — who changes HVAC filters, who pays for clogged tenant-caused drains, how entry works for repairs.

4. Early termination and notice — so a mid-lease move does not surprise your vacancy budget.

5. Occupancy and subletting rules — unauthorized occupants are how wear and claims multiply.

6. Entry and showings near end of term — so you can market before the unit is empty.

A “friendly” handshake lease can feel calm until the first unpaid month. Use a jurisdiction-appropriate form and have a local landlord attorney review your template once. That review usually costs less than one bungled deposit dispute.

A year-one cost checklist

✅ Fund the first turnover before you spend year-one cash flow on something else.

✅ Age every major system at purchase; raise CapEx if two systems are near end-of-life.

✅ Bind landlord insurance with vacancy and loss-of-rents eyes open.

✅ Read the lease like a cash-flow document, not like boilerplate.

✅ Track make-ready and CapEx in separate buckets so you can see which cost hit.

If you are still choosing between holding and flipping the same address, the next post puts both exits on one worksheet.

Exit planner and comparison tools are useful when the same property could honestly go either way.

Leases, CapEx, and turnover do not announce themselves in the listing photos. Budget them anyway, and year one stays honest about what the property can actually support.

If you want to budget CapEx, lease turnover, and those year-one costs on a live sheet, start a 30-day trial.

Next up: Hold vs flip on the same address — one worksheet, two exits.