The lease renewal timeline: when to start, what notice deadlines mean, and the math of an empty month

Lease renewals fail by calendar, not by negotiation. The lease ends August 31, nobody looks at it until August 10, and now every option is bad: too late to send a proper increase notice, too late to list the unit for a September 1 move-in, too late to have the conversation the tenant deserved. The renewal that would have taken one friendly email in June becomes an awkward scramble — or a month of vacancy — in August. The whole game is starting on time, and "on time" is earlier than most small landlords think.

The 90-day method

Working backward from lease end, a renewal has four stages, and 90 days is enough room for all of them:

• ~90 days out — decide. Renew this tenant? At what rent? Check the unit's history, the market, and what you spent on them this year. This is a decision you want to make calmly, not under deadline.
• ~75–60 days out — offer. Send the renewal offer in writing with the proposed rent and term. Early offers signal you want them to stay, and give a good tenant time to say yes before they idly browse listings.
• ~60–30 days out — resolve. Chase the non-answers. A renewal offer without a response date is a coin flip; give it one, follow up once, and treat silence as your cue to plan for turnover.
• By the notice deadline — act. Whatever the outcome — signed renewal, agreed increase, or non-renewal — the required written notice goes out on or before the legal deadline, not after.

Notice deadlines: one subtraction, jurisdiction-sized

Most jurisdictions require written notice ahead of a rent increase or a non-renewal — commonly 30, 60, or 90 days, and it varies by state and city, sometimes by how long the tenant has lived there or how big the increase is. The deadline math itself is trivial:

notice deadline = lease end − notice days

An August 31 lease end with 60-day notice means everything must be decided, written, and delivered by July 2. The math is the easy part; the discipline is knowing that date for every unit, months ahead, instead of discovering it in arrears. (What the notice must say, how it must be delivered, and how many days your jurisdiction requires: that's local law — verify it for your state and city, and when in doubt, ask a local landlord-tenant attorney. Nothing here is legal advice.)

The math of an empty month

Renewal decisions get sharper the moment you price the alternative. A turnover typically costs, at minimum: the vacant weeks while you clean, list, and screen; the make-ready work; and the marketing/screening costs. On a $1,600/month unit, a fairly gentle version is:

• One month vacant: $1,600
• Make-ready (paint touch-up, cleaning, small repairs): $900
• Listing, showings, screening: $250

That's $2,750 — before anything goes wrong — versus a proposed increase of, say, $75/month, which is $900 a year. In other words, losing a good tenant over that increase takes roughly three years of the higher rent just to break even. Sometimes the increase is still right; markets move, and under-market rent compounds too. The point isn't a rule — it's that the renewal conversation has a dollar value on both sides, and you should know both numbers before you open your mouth. Tracked over time (your rent roll is where lease ends live), the pattern of who renews at what increase is some of the most valuable data a small landlord owns.

The renewal is a system, not an event

Renewals reward the landlord who treats them as a rolling process: statuses checked monthly, offers out early, deadlines computed instead of remembered. It's the same discipline that runs the rest of the small-landlord year — the rent roll that knows every lease end, the screening process when a unit does turn, and the deposit-return deadlines when a tenancy ends. None of it is hard. All of it is calendar work — and calendar work is exactly what a spreadsheet never forgets.

This is general planning guidance for small landlords, not legal advice. Notice requirements for rent increases and non-renewals vary by state and city and change over time; rent-regulated and subsidized tenancies have additional rules. Verify your jurisdiction's current requirements or consult a local landlord-tenant attorney. Sample figures are illustrative.