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Cost guide · Brooklyn

What does a backyard renovation cost in Brooklyn?

Row-house yards turned into usable rooms — decking, pavers, fencing, drainage. The range, and why access drives it.

How big is the space?
How far are you going?
Be careful of averages

What actually moves your number

Any calculator that gives you one figure is guessing. These are the things that decide where you land in the range — or outside it.

  • Can a truck get to your yard? In most Brooklyn row houses it can't, so every paver, every bag of gravel and every pound of broken concrete goes through your house by hand. Biggest single factor, and it's already priced into the figures above.
  • What you put on the ground. Concrete pavers run $25–50 a square foot installed; bluestone runs $35–85. That's a 2–3× swing on the largest line item in the job.
  • The fence — it often costs more than the patio. A prefab stockade fence and a custom horizontal hardwood fence differ by four or five times, and on a small yard the fence can be the single most expensive item.
  • Whether the ground has to be dug up. If your yard drains toward the house, regrading and a drain system add a scope you can't see when it's finished — but skipping it is what puts water in your cellar.
  • A deck instead of a patio. Decks need a DOB permit and an engineer, and on a standard 20-foot lot a deck sits within three feet of both property lines — which means steel framing, not wood. That's why decks run several times a patio of the same size.
  • A landmarked block — Park Slope, Brooklyn Heights, Fort Greene, Cobble Hill. Adds review time and application cost, and constrains fence materials and how much of the yard you can excavate.

What this doesn’t include: Excludes pools and hot tubs, rear extensions, outdoor kitchens needing gas or plumbing, furniture and planters, structural repair to the house, retaining and party walls, contaminated-soil abatement, and all DOB or Landmarks filing and expediter fees. A crane or hoist over the building, if your yard has no rear access at all, starts around $2,000–$4,000 on top.

Before anyone picks up a tool

The costs nobody budgets for

These aren’t construction. They’re what the city and your building charge you for permission, and on a permitted job they add up to real money.

DOB filing fees — 1–3 family house
$130 base + $2.60 per $1,000 of workA $900,000 rowhouse gut lands around $3,100 all in.
DOB filing fees — co-op or condo apartment
$225 base + $10.30 per $1,000 of workFour times the rate of a house. A $300,000 apartment gut lands around $4,500 — more than the rowhouse job three times its size.
Landmarks (LPC) permit, if you're in a historic district
$95 for the first $25,000 + $5 per $1,000 aboveRequired whenever the work needs a DOB permit, even if nothing is visible from the street. Usually issued inside ten business days.
Co-op or condo board — deposit
Typically 2.5% of the job, refundableScales with the job rather than being a flat fee. Held by the managing agent until sign-off.
Co-op or condo board — alteration and processing fees
Around 1% of the job, plus $500–$1,000 in flat feesNot refundable.
Monthly alteration fee, some buildings
Up to $1,000 per month work is happeningBilled as additional rent. The line item nobody warns you about — a six-month job is $6,000.
Architect and expediter
8–20% of construction costHigher percentage on smaller jobs. Required for anything structural or plumbing-related in a co-op.
Asbestos inspection (ACP-5)
$500–$1,000Required before most permits in older buildings. Abatement, if triggered, is separate and much larger.

The one that surprises everyone: the city charges a house $2.60 per $1,000 of work and an apartment $10.30. So a $900,000 brownstone gut pays lessin DOB filing fees than a $300,000 co-op kitchen three times smaller. It’s in the Administrative Code if you want to check.

Where these numbers come from

Published NYC renovation cost data, federal construction cost indices, city fee schedules read from the Administrative Code, and real co-op alteration agreements. We’d rather show our working than ask you to take our word for it.

These are Brooklyn market ranges, not a Handygrandson price list — what work like this generally costs here, so you know roughly what you’re dealing with before you call anyone. Your number depends on your building, and we can’t know that until we’ve seen it.

A range is a start. A quote is a number.

Send a few photos and we’ll come back with a real figure — usually within 90 minutes. Free, and no trip fee.

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