If you own a rent-stabilized building in Brooklyn, at some point a major system is going to fail or age out — a roof, a boiler, the elevator, the windows — and you'll face a real capital expense with no ability to simply raise the rent to cover it. That's what the Major Capital Improvement (MCI) process exists for: a formal, DHCR-supervised way to recover part of a legitimate, building-wide capital cost through a limited, formula-based rent increase on rent-stabilized units.
MCIs are one of the very few legitimate ways to add to a stabilized rent beyond the annual Rent Guidelines Board increase — but since the Housing Stability and Tenant Protection Act of 2019 (HSTPA), the process is slower, the caps are tighter, and the paperwork has to be airtight. This guide walks through what qualifies, how the application actually moves through DHCR, what it costs, and what a realistic timeline looks like for a Brooklyn multifamily owner.
What counts as an MCI
A Major Capital Improvement is a capital improvement that:
- Benefits the entire building, not a single apartment — a new roof, new boiler, elevator modernization, window replacement, masonry/pointing work, or a new intercom/security system are typical examples.
- Is a genuine capital improvement, not a repair. Fixing a leak is maintenance; replacing the whole roof system is capital. DHCR draws this line carefully, and it's the single biggest reason applications get challenged.
- Is depreciable and has a useful life — the kind of project you'd capitalize on your books, not an operating expense.
- Was necessary, not merely a discretionary upgrade. DHCR looks at whether the old system was failing or at the end of its useful life.
Work that improves a single unit — a new kitchen, new bathroom, new flooring in one apartment — is an Individual Apartment Improvement (IAI) instead, filed and calculated under different rules. Owners sometimes try to bundle unit-specific work into an MCI filing; DHCR will typically kick that portion back out, so it pays to sort building-wide work from unit-specific work before you file anything.
How the MCI process actually works
An MCI application isn't a form you submit and forget — it's a multi-step administrative proceeding with tenants as a party to it.
- Complete the work and assemble documentation. Before filing, the improvement has to be finished, paid for, and (for most systems) properly permitted/inspected. You'll need contracts, invoices, cancelled checks or proof of payment, and — for many project types — a certification from a licensed engineer or architect confirming the work meets code and qualifies as capital improvement rather than repair.
- File the application with DHCR, including the building's registration history, a description of the work, an itemized cost breakdown, and supporting documentation for every dollar you're claiming.
- DHCR serves tenants notice. Every affected tenant has to be notified of the application and given the opportunity to respond.
- Tenants may answer. Tenants can dispute that the work was done, that it qualifies as an MCI rather than repair, or that the claimed costs are accurate. Owners typically get a chance to reply to tenant objections.
- DHCR's Rent Administrator issues an order. The order determines whether the improvement is approved, what costs are allowed (DHCR frequently trims claimed costs it finds unsupported or excessive), and the resulting per-room or per-unit increase, applied over the statutory amortization schedule.
- Either side can appeal. A Petition for Administrative Review (PAR) lets an owner or tenant challenge the Rent Administrator's order to DHCR's Commissioner. Beyond that, an Article 78 proceeding in court is the final avenue.
Only after a final, unappealed order (or a PAR resolution) can you actually start collecting the increase — and even then, it's phased in gradually, not all at once, and capped annually per HSTPA.
Realistic timeline
Owners often assume an MCI application moves like a permit request. It doesn't. Expect:
| Stage | What's happening |
|---|---|
| Pre-filing | Complete the work, gather documentation, get engineer/architect certification |
| Filing → tenant notice | DHCR dockets the case and serves affected tenants |
| Answer period | Tenants (individually or through a tenant association) can respond and object |
| Review & order | DHCR's Rent Administrator reviews the record and issues a decision |
| Appeal (if filed) | PAR review by DHCR's Commissioner; possible Article 78 in court |
Contested filings, buildings with active tenant associations, or applications with documentation gaps take considerably longer than clean, well-supported ones. Build a long runway into your capital planning — an MCI increase is not a source of near-term cash flow for a project you need to finance now. It's a partial, delayed recovery mechanism for capital work you're doing regardless.
What HSTPA changed about MCI economics
Before 2019, MCIs were a meaningfully faster and larger recovery tool. HSTPA rewrote the math:
- Amortization periods were lengthened, spreading the recoverable cost over more years than before — which shrinks the annual increase for the same total project cost.
- Annual caps on the increase were added, limiting how much of a tenant's rent can rise from MCIs in any given year regardless of the underlying formula.
- Increases can, in some cases, be removed after the amortization period ends, rather than becoming a permanent part of the legal rent — confirm current treatment with DHCR for your specific case.
- Documentation and cost-substantiation scrutiny increased. DHCR has gotten stricter about trimming unsupported costs from applications.
Because the exact current caps, amortization periods, and per-room formulas are set and periodically updated by DHCR, don't underwrite a project against a remembered pre-2019 number or a figure from an old article — pull the live figures from DHCR's current MCI fact sheet and amortization schedule before you file.
What an MCI actually costs an owner
There are really two cost buckets:
- The capital project itself — the roof, boiler, elevator, or other system, at real contractor pricing. This is a real building expense whether or not you ever file an MCI; the filing simply lets you recover part of it over time.
- The filing costs — engineer/architect certification, document preparation, and often a consultant or attorney to prepare and defend the application. Given how document-heavy and contestable these filings are, professional preparation is usually worth the fee: an incomplete or inconsistent application is one of the most common reasons DHCR denies or reduces an award.
Because the post-HSTPA cap limits annual recovery per unit, very large projects can take years to amortize back to owners even after approval. Model the realistic, capped payback — not the full project cost — before deciding an MCI changes your capital-planning decision.
Common mistakes that sink an MCI application
- Filing for repair work as if it were capital improvement. DHCR draws this line strictly; be able to show the old system failed or reached the end of its useful life.
- Bundling unit-specific (IAI) work into an MCI filing. Sort the scope before you file.
- Weak cost documentation. Missing contracts, unpaid invoices, or unclear cost allocation are the fastest way to get an award trimmed or denied.
- Skipping proper tenant notice. A defective notice can undermine the entire filing.
- Underestimating the timeline and treating the increase as near-term cash flow for financing the project.
- Not checking HPD compliance first. Outstanding violations or service-reduction issues on the building can complicate or jeopardize an MCI order.
MCIs and Brooklyn's rent-stabilized housing stock
Brooklyn's older multifamily buildings — the pre-1974 walk-ups and six-plus-unit properties that make up so much of the borough's rental stock — are exactly where MCIs come up most often: aging roofs, original boilers, elevators nearing end-of-life. Managing the improvement well means coordinating the construction, the documentation, and the DHCR filing as one project rather than three disconnected efforts — which is exactly how we approach renovation and capital-improvement oversight for owners across Bed-Stuy, Crown Heights, and the rest of Brooklyn.
Rent-stabilized and subsidized housing is our core specialty at Yak Management, not a sideline. We keep DHCR registrations, MCI documentation, and building records clean through AppFolio, so owners can pursue legitimate capital-cost recovery without the paperwork becoming its own liability.
Get help planning your next capital project
If you're weighing a roof, boiler, or elevator replacement and want a straight read on whether an MCI filing makes sense for your building — and how to plan the project and the paperwork together — schedule a property consultation or call 718-568-9278. We'll walk through your building's specifics honestly, before you commit to the project.
This article is general information, not legal advice. MCI rules, caps, and amortization schedules are set and updated by DHCR and can change — confirm current requirements and figures directly with DHCR, and consult a qualified New York attorney or MCI consultant before filing.