For most Baltimore landlords, raising rent is one of the most financially impactful decisions they make each year — and one of the most poorly executed. Some landlords never raise rent at all, quietly falling behind the market for years and subsidizing their tenants’ below-market housing. Others raise rent aggressively, only to lose a great long-term tenant and absorb a costly vacancy that wipes out two years of increases in one month.

A third group makes a more dangerous mistake: they raise rent without following Maryland’s notice requirements — and create legal exposure they didn’t know existed. In Baltimore City specifically, there are additional restrictions that apply to properties with outstanding code violations that most landlords have never heard of.

This guide covers everything Baltimore property owners need to know to raise rent legally, strategically, and without blowing up a good tenancy.

Maryland’s Rent Increase Notice Requirements

Maryland state law establishes the baseline notice requirement that applies to all landlords in Baltimore City and Baltimore County. Under Maryland Code, a landlord must provide a minimum of 90 days’ written notice before a rent increase can take effect on any lease with a term longer than one month.

This means the notice must be delivered — in writing — at least 90 days before the new rent amount is supposed to begin. If you’re managing a month-to-month tenancy that originated from a standard annual lease, the 90-day rule still applies. Verbal notice does not count. A casual mention during a conversation does not count. The notice must be in writing, state the new rent amount clearly, and state the effective date.

For week-to-week tenancies, a shorter notice window applies — but the vast majority of Baltimore residential rentals fall under longer lease structures where 90 days is the standard.

One critical timing note: if you’re planning a rent increase at lease renewal, you need to start the clock well before the lease ends. If your lease expires on September 30 and you want the new rent to begin at renewal, your notice needs to be delivered no later than July 1 — 90 days prior. Miss that window and you’re either locked into the old rate for another lease term or negotiating a month-to-month arrangement while you wait out the notice period.

Does Baltimore Have Rent Control? Clearing Up the Confusion

A number of online resources suggest that Baltimore City has some form of rent control or CPI-based cap on rent increases. This creates unnecessary confusion for landlords. Here’s the accurate answer: Baltimore City does not have a general rent control ordinance that limits how much a landlord can raise rent on a standard residential rental unit.

There is no percentage cap. There is no CPI formula. There is no city board that must approve increases. As long as you provide proper 90-day written notice, you can set the new rent at whatever the market supports.

This is a meaningful distinction from cities like Washington, D.C. or jurisdictions in Montgomery County, Maryland — which do have formal rent stabilization programs with specific caps and exemptions. Baltimore City is not in that category. The 2024 Renters’ Rights and Stabilization Act, which did make significant changes to eviction fees, security deposits, and tenant purchase rights, did not introduce rent control to Baltimore.

The Baltimore City Restriction Most Landlords Don’t Know About

Here is where many self-managing Baltimore City landlords unknowingly create legal exposure. Under Baltimore City Code Article 13, § 8-3, a landlord is prohibited from raising rent when an outstanding housing code violation notice exists that was generated by a tenant complaint — until that defect is corrected and the violation is formally abated.

In plain terms: if your tenant filed a complaint with Baltimore City Housing (DHCD) about a maintenance issue, and that complaint triggered a violation notice, you cannot serve a rent increase notice — and any rent increase served during that window may be legally unenforceable — until the underlying violation has been resolved and the notice cleared.

This matters for two reasons. First, landlords who are unaware of this rule sometimes serve rent increases while a tenant complaint is still open, exposing themselves to a tenant challenge in housing court. Second, and more broadly, it underscores how interconnected maintenance responsiveness and lease administration are in Baltimore. A backlog of unresolved maintenance requests is not just a habitability issue — it can directly affect your ability to legally manage your rent.

The License Rule: No License, No Rent

This is the most absolute rule in Baltimore City rental compliance, and it applies to rent increases just as much as to standard rent collection. A landlord without a valid Baltimore City rental license cannot legally charge, collect, or retain any rent — including a newly increased amount. Since January 1, 2019, unlicensed landlords in Baltimore City lose the legal right to collect rent for the entire period during which they operate without a license.

If your rental license lapses and you raise rent, you’re collecting an illegal rent amount on an unlicensed property. That’s a compounded compliance problem. The license renewal framework changed again as of January 1, 2026 under the Strengthening Renters’ Safety Act, which updated inspection cycles and introduced new requirements for properties with recurring violations. If you haven’t verified your current license status, do it before your next rent increase notice goes out.

When Can You Actually Raise Rent?

Rent cannot be increased during an active lease term without mutual written agreement from the tenant. The standard scenario for a rent increase is at lease renewal — and the 90-day written notice must be delivered before the current lease expires. Here’s how the most common scenarios play out:

How Much Should You Actually Raise Rent? The Strategic Answer

This is where legal compliance ends and investment strategy begins. The answer to “how much should I raise rent?” is not a percentage — it’s a comp analysis. What are comparable units in your neighborhood renting for right now? What’s the vacancy rate for your unit type? How long has your current tenant been in place, and what would it cost to replace them if they leave?

The Baltimore rental market in 2026 is showing average rents around $1,600/month citywide, with the Fair Market Rent for a 2-bedroom at approximately $1,965/month according to HUD. But those numbers vary significantly by neighborhood. A Canton rowhouse, a Hampden apartment, and a Pikesville single-family home all sit in different micro-markets with different demand curves.

Before deciding on a number, answer these questions honestly:

What would this unit rent for today if the tenant left tomorrow? Pull active listings for comparable units within a half-mile. If current rent is already at or above that number, an increase risks vacancy for minimal gain. If you’re 15–20% below market, a measured increase is not only justified but overdue.

What does one month of vacancy cost you? A typical Baltimore single-family rental at $1,600/month carries roughly $1,600 in lost rent during a vacancy, plus turnover costs — cleaning, repainting, any unit prep — that routinely run $1,500 to $3,500 depending on condition. That’s $3,000–$5,000 in real dollars. A $100/month rent increase takes 30–50 months to recover a vacancy caused by raising rent too aggressively.

How long has this tenant been in place? A 3-year tenant who pays on time and maintains the property is worth real money in avoided costs. That’s not a reason to never raise rent — it’s a reason to raise it at a rate that keeps them.

What Self-Managing Landlords Get Wrong

The most common mistakes Sungate sees when owners come to us after managing their own properties are predictable. They raise rent with insufficient notice — sometimes just 30 days — because they didn’t know Maryland requires 90. They serve an increase while a DHCD complaint is still open. They haven’t renewed their rental license and don’t realize the increase is legally uncollectable. Or they haven’t raised rent in five years because they were nervous about losing the tenant, and they’re now collecting $400/month below market on a property they could be running much more profitably.

Professional property management solves all of these at once. Every notice goes out on time with the right language. Every license is tracked and renewed on schedule. And every renewal is benchmarked against current comps so the increase decision is data-driven, not anxious guesswork.