Brownstone Restoration in Clinton Hill, Brooklyn

Bobby Contracts Inc. restores brownstone facades throughout Clinton Hill, from the mansion blocks on Clinton Avenue to the Neo-Grec rowhouses nearby — handling spalling repair, stoop restoration, color-matched patching, and repointing for landmarked properties. Licensed and insured with 20+ years of experience, we work throughout the Clinton Hill Historic District. Free estimates available.

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About Us

A Historic District Built on Two Scales at Once

Clinton Hill was designated a historic district in 1981, and what sets it apart from most of Brooklyn’s brownstone neighborhoods is the sheer range of what’s inside the boundary. Clinton Avenue between DeKalb and Willoughby holds four freestanding mansions connected to Charles Pratt, the industrialist whose fortune came from Standard Oil — his own residence and three built as wedding gifts for his sons. A block or two over, the district shifts into rows of Neo-Grec and Italianate townhouses built through the 1880s, much closer in scale to what you’d find in Park Slope or Fort Greene.

That range matters for restoration work, because a freestanding mansion facade and a standard rowhouse brownstone don’t fail — or get repaired — the same way. We’ve worked on both types within the district, and we scope each project according to the building’s actual construction, not a generic brownstone template.

Where Clinton Hill's Brownstone Damage Comes From

After two decades working in this district, the damage patterns are fairly predictable. Water works its way into window sills and cornice details, freezes over the winter months, and the resulting expansion causes the brownstone’s surface layer to spall and flake away — a process that speeds up on buildings where cornice or coping details haven’t been maintained in years. Stoops face a separate kind of wear entirely, worn down by decades of foot traffic and winter salt exposure, often needing attention well before the facade above shows any real problems.

We also regularly find old repairs done with standard cement-based mortar rather than a lime-rich mix compatible with brownstone. It’s one of the most common mistakes on older buildings in this district — hard modern mortar traps moisture against the softer stone instead of letting it breathe, which speeds up exactly the kind of deterioration it was meant to prevent.

How We Approach a Restoration Project

Assessing what’s there. We document the current condition of the facade in detail — spalling, cracking, cornice condition, and stoop wear — which is useful for project planning and typically required for LPC submissions.

Matching materials to the building’s era. Clinton Avenue’s mansions and the district’s rowhouses were built decades apart in some cases, with different detailing and proportions. We match repair compound and mortar to the specific building, not a one-size-fits-all brownstone standard.

Filing with LPC. Since the entire district falls under Landmarks Preservation Commission jurisdiction, we prepare and submit the documentation LPC review requires, building that approval timeline into your project schedule from the start.

Completing the restoration work. This includes spalling repair, stoop rebuilding, repointing with brownstone-compatible mortar, and cornice or window surround restoration where applicable.

Sealing and finishing. We apply breathable sealants suited to sandstone specifically, since the wrong product traps moisture and accelerates the same damage it’s meant to prevent.

Services We Provide

Spalling and surface erosion repair

removing damaged brownstone and replacing it with color-matched compound.

Stoop restoration

rebuilding treads, risers, and railings worn down by decades of use.

Repointing

replacing deteriorated mortar with a lime-rich, brownstone-compatible mix.

Crack and structural repair

distinguishing cosmetic cracking from deeper structural movement.

Cornice and detail restoration

a particular focus in Clinton Hill given the district’s ornate mansion and rowhouse detailing.

Waterproofing and sealant application

protective treatment appropriate for sandstone, applied after repairs are complete.

Signs It's Time for an Inspection

Flaking or chipped brownstone, cracks near window openings, a worn or crumbling stoop, patchy discoloration from a past repair, or damp interior walls near the exterior are all worth having assessed. On some of the district’s older mansion-scale buildings, damage that starts at the cornice or roofline can work its way down the facade over time if it’s not addressed early — catching it sooner keeps the repair scope manageable.

What Working With Us Looks Like

We’ve spent more than 20 years restoring brownstone across Brooklyn, including work throughout Clinton Hill’s historic district — both its mansion-scale properties and its rowhouse blocks. Every estimate is written and itemized before work begins. We handle LPC documentation and filings directly, use brownstone-specific mortar and repair compounds rather than generic masonry products, and back our work with a warranty on both materials and labor.

Frequently Asked Questions

Is the estimate really free?

Yes — we inspect the brownstone, walk you through what we’re seeing, and provide a full written estimate with no cost or obligation.

Does my Clinton Hill property need Landmarks Preservation Commission approval?

Almost certainly, since the entire Clinton Hill Historic District, designated in 1981, falls under LPC jurisdiction. We handle the documentation and filing process as part of the project.

Do you restore mansion-scale facades, or just standard rowhouses?

Both. Clinton Hill’s district includes both freestanding mansions, like those on Clinton Avenue, and standard rowhouse brownstones, and we scope projects according to each building’s actual construction.

Why does brownstone need different mortar than brick?

Brownstone is softer and more porous than brick, so standard cement-based mortar — harder than the stone itself — traps moisture and speeds up deterioration instead of preventing it.

Do you restore cornices as well as facades?

Yes, cornice restoration is a significant part of our work in Clinton Hill specifically, given how much ornate detailing appears throughout the district’s mansions and rowhouses.