356 West 20th Street
A landmarked Chelsea brownstone on the #3 best residential block in New York City. Income today; convert to single-family tomorrow — we do the work, we capture the premium.
West 20th Street: the #3 best residential block in New York City
The High Line — a permanent value anchor
“Property values around the High Line increased 103% between 2003 and 2011 — through the Great Recession. The median resale price near the High Line is more than 100% higher than even one block away.”
“Chelsea's average sales price appreciated ~180% from 1990–2010, then a further ~120% from 2010–2020. The High Line and 200+ galleries anchor a cultural premium that continues to compound.”
The gallery district drives the single-family buyer
“Properties near W 20th–28th Streets — the core of Chelsea's gallery district — command premium prices. Art collectors, creatives, professionals, and international buyers create a consistent deep pool of high-net-worth purchasers.”
“When a Chelsea townhouse is priced with respect for current comps and polished for today's buyer, limited inventory and a deep pool of high-net-worth purchasers supports premium results.”
Pro-forma NOI and the income ceiling
P&L — Stabilized pro-forma
- Pro-forma gross rent
- $448,800
- Vacancy & credit loss (2%)
- (8,976)
- Effective gross income
- $439,824
- RE taxes
- (32,886)
- Cleaning & maintenance
- (17,403)
- Insurance
- (6,345)
- Legal & professional
- (1,500)
- Repairs & maintenance
- (13,614)
- Utilities
- (13,129)
- Management
- (17,062)
- Capital expenses
- (195)
- Total expenses
- (102,134)
- Pro-forma NOI
- $337,690
Actual rent $354,000/yr ($29,500/mo). Pro-forma: 6 studios × $4,150 + garden $6,000 + duplex $6,500 = $37,400/mo.
Underwriting candor
The pro-forma above is intentionally aggressive — it marks every unit to top-of-market rent and strips operating expenses to a lean stabilized run-rate to illustrate the full upside case. In today's market, most buyers underwrite to actual in-place income and trended (not snapped) expenses, and will not pay for growth they have to execute themselves. Treat the pro-forma as a ceiling, not a basis — the income-approach valuation that follows discounts back toward in-place reality.
Rent roll
| Unit | Layout | Current/mo | Pro-forma/mo | Annual PF |
|---|---|---|---|---|
| Garden | 1BR/1.5BA | $4,950 | $6,000 | $72,000 |
| 1A | Studio | $3,050 | $4,150 | $49,800 |
| 1B | Studio | $3,450 | $4,150 | $49,800 |
| 2A | Studio | $3,150 | $4,150 | $49,800 |
| 2B | Studio | $3,250 | $4,150 | $49,800 |
| 3-4A | Duplex Jr 1BR/2BA | $5,350 | $6,500 | $78,000 |
| 3B | Studio | $3,100 | $4,150 | $49,800 |
| 4B | Studio | $3,200 | $4,150 | $49,800 |
| Total annual | $354,000 | $448,800 | $448,800 |
Cap rate sensitivity
| Cap | Value | $/SF | Read |
|---|---|---|---|
| 5.0% | $6.75M | $1,457 | Not applicable |
| 5.5% | $6.14M | $1,324 | Ceiling / stretch |
| 5.75% | $5.87M | $1,267 | Best case |
| 6.0% | $5.63M | $1,214 | Realistic |
| 6.25% | $5.40M | $1,165 | Realistic |
| 6.5% | $5.20M | $1,121 | Realistic / floor |
Income ceiling $5.87–6.14M. Realistic range $5.20–5.63M. All-in basis uses floor: $5.20M. Net equity after mortgage payoff: $2.76M–$3.20M — see §03.
Existing debt, the August 2027 rate reset, and what it means for each path
The property carries a $2,775,000 mortgage originated June 2020. Current balance approximately $2,411,000. Material to both paths: on income sale it comes off the top; on conversion path it gets retired at SFH closing — but the rate reset in August 2027 creates urgency for anyone holding as income past that date.
Income sale — net equity to partners
| Sale price | Mortgage payoff | Net equity |
|---|---|---|
| $5.20M (realistic floor) | ~$2,435,000 payoff | $2,765,000 |
| $5.63M (realistic) | ~$2,435,000 | $3,195,000 |
| $5.87M (best case) | ~$2,435,000 | $3,435,000 |
| $6.14M (ceiling/stretch) | ~$2,435,000 | $3,705,000 |
Includes ~1% prepayment premium. Real walk-away is $2.76M–$3.70M, not the headline sale price.
The rate reset — urgency
| Scenario | Annual cost |
|---|---|
| Now — 3.00% fixed through Jul 2027 | $140,394 |
| After Aug 2027 — est. ~7.5% floating | ~$175,000+ |
| Increase in annual debt service | ~$35,000+ |
| Extra interest over 3 years holding | ~$105,000+ |
Holding as income past August 2027 means buying into a floating rate at materially higher cost — on top of Good Cause and Mamdani headwinds.
Good Cause Eviction + Mamdani's rent freeze have taken the value-add investor out of the market
Two seismic policy shifts since 2024 have changed what an income buyer is acquiring. The buyer is no longer purchasing an asset with upside — they are buying today's rent roll at today's levels, with capped growth, no ability to create vacancy for repositioning, and increasing political risk on the trajectory of regulation.
New York State's Good Cause Eviction Law effectively ended the free-market lease cycle as a value creation tool. A landlord cannot decline to renew a lease without “good cause” established in court — and non-renewal for the purpose of creating vacancy, capturing rent upside, or repositioning a unit is not good cause. Rent increases above 10% (or 5% + CPI, whichever is lower) are automatically “unreasonable” and subject to challenge. For any investor buying this building today as an operational property, the traditional playbook — cycle tenants at expiry, re-lease at market — is gone. You are a permanent landlord to whoever is in the building, with limited growth and no path to vacancy through non-renewal.
“Good Cause requires a court order to remove a tenant including via non-renewal. A landlord cannot elect not to renew without establishing good cause in court. Tenants cannot waive these rights.”
“Good Cause applies if a landlord owns ten or more residential units anywhere in New York State — even if each individual building has fewer than ten apartments. It is not limited to large buildings.”
Mayor Mamdani took office January 1, 2026 on a platform of a four-year rent freeze on stabilized apartments and has appointed an RGB supermajority aligned with that agenda. Our units are free market today — but any income buyer prices in the direction of travel. Rent-stabilized buildings already trade at 50% discounts to pre-2019 values. Free-market buildings are being discounted for where the policy is heading, not just where it is today. ~50,000 NYC apartments are currently vacant because renovation costs under rent regulation cannot be recovered — vacant buildings increasingly command a premium over tenanted ones. The political environment has made empty more valuable than occupied for income investors.
“Rent-stabilized buildings trade at 50% discounts to pre-HSTPA values. Expenses climbed 28% over five years while allowable increases totaled only 11%. A four-year freeze makes that math existential.”
“One-two wealth destruction punch — the rent freeze drives multifamily values down, while property tax increases compress values further from the expense side.”
10 years of transactions — the block proves the formula
Every building on this block converted to a finished single-family home has sold between $10M and $22.5M. Income and multifamily assets cluster at $4.8–8.5M. The gap is not narrowing — it is widening.
| Yr | Address | Price | $/SF | Width | Type | Notes |
|---|---|---|---|---|---|---|
| 2014 | 460 W 22nd St | $16.0M | $2,667 | 17' | SFH sold | Gut reno. Bought $4.6M → sold $16M. StreetEasy |
| 2015 | 334 W 20th St | $8.5M | $1,848 | 25' | Income sold | 5-unit multifamily, pre-reno. StreetEasy |
| 2021 | 334 W 20th St | $22.5M | $3,189 | 25' | SFH sold | Same bldg, Gachot reno. Chelsea record. StreetEasy |
| 2022 | 241 W 20th St | $4.8M | $1,078 | 23' | Income sold | 3 apts + retail. Last income sale on this block. |
| 2023 | 313 W 20th St | $10.7M | $1,163 | 25' | SFH sold | Carriage house SFH. Garage. Fully renovated. |
| 2024 | 354 W 20th St | $6.2M | $1,292 | 17' | Conv. sold | MAIN COMP: Identical shell to 356 — same row, same 17' width. Just sold. StreetEasy |
| 2025 | 217 W 20th St | $11.6M | $1,270 | 25' | SFH sold | Elevator, garage, 1,500 SF outdoor. Nov 2025. |
| 2026 | 348 W 20th St | $5.85M | $1,170 | — | Conv. sold | Sold May 5, 2026. 5-story, south garden. StreetEasy |
| 2026 | 354 W 20th St | $14M ask | $3,021 | 17' | SFH active | MAIN COMP: Same 17' width & row as 356. Elevator, 6 levels. Next door. StreetEasy |
| 2026 | 416 W 20th St | $9.99M ask | $1,701 | 21' | SFH active | Cushman Row. 5,878 SF. StreetEasy |
| 2026 | 318 W 20th St | $20.0M ask | $2,439 | 25' | SFH active | Was 24-unit rooming house → 8,200 SF mansion. StreetEasy |
| 2026 | 334 W 20th St | $22.95M ask | $3,252 | 25' | SFH active | $8.5M MF (2015) → $22.95M. StreetEasy |
| 2026 | 356 W 20th — US (income) | $5.20–6.14M | $1,121–$1,324 | 17' | Income range | Realistic $5.20–5.63M. Net equity after payoff: $2.76M–$3.20M. StreetEasy |
| 2027 | 356 W 20th — US (SFH conversion) | $14M ask | $3,021 | 17' | Conversion | We convert, then sell — same finished product as 354 W 20th. Floor: $12M. Net to partners: $7.0M–$9.2M. |
Renovated vs. not — the premium is documented and compounding
Three buildings on the same block. The renovation premium has held and grown consistently since 2014. The formula is repeatable. We do the next one.
318 W 20th — most extreme
A rooming house on this block became a $20M home.
StreetEasy listing334 W 20th — the precedent
Same block, same era. Gachot renovation. Chelsea record.
StreetEasy listing354 W 20th — our direct comp
Main CompSame 17' width. Same landmarked row. Same 1836–54 brownstone. We ask the same.
StreetEasy listingConvert to single-family: budget and returns
Budget
- Asset basis (income sale floor)
- $4,550,000
- Hard construction (gut reno, SFH)
- $1,850,000
- Soft costs (architect, LPC, permits)
- $300,000
- Financing carry
- $100,000
- Contingency (15%)
- $250,000
- Total renovation cost
- $2,500,000
- All-in basis
- $7,050,000
Returns
| Exit price | Mortgage payoff | Net to partners | vs. income ($5.2M) |
|---|---|---|---|
| $14M (ask) | ~$2,325,000 | $9,175,000 | +$6,925,000 |
| $13M | ~$2,325,000 | $8,175,000 | +$5,925,000 |
| $12M (floor) | ~$2,325,000 | $7,175,000 | +$4,925,000 |
Net = exit price − mortgage payoff at closing (~$2.32M by mid-2027) − renovation cost ($2.5M). Income baseline: $5.20M sale / $2.76M net equity. Even at our $12M floor, partners walk away with $7.18M — nearly 3× the income sale net equity. We ask $14M, matching 354 W 20th next door.
12-month timeline
| Phase | Timing | Description |
|---|---|---|
| Financing & planning | Months 1–2 | Partner equity or hard money financing. Architect engaged. LPC pre-application filed. Attorney initiates FM vacancy — all 8 units free market, most leases M-T-M or expired. Good Cause non-renewal does not impede owner-use / change-of-use conversion. |
| Approvals & vacancy | Months 2–4 | LPC approval — 354 W 20th (same row, same dimensions) already approved as direct precedent. Building fully vacated through legal FM process. |
| Construction | Months 4–10 | Full gut renovation. SFH conversion: 5–6 levels, elevator, open rear facade to south garden, roof deck, all new mechanical, HVAC, and electrical. |
| Sale | Months 10–12 | Professional staging. Pre-market quietly to qualified buyers at $14M. We know the buyer profile and the block. We execute this ourselves. |
The case in plain terms
West 20th Street is the #3 best residential block in New York City — a landmarked 1836–54 brownstone row two blocks from the High Line, in the heart of the Chelsea gallery district. Every building on this block converted to a finished single-family home has sold between $10M and $22.5M. The identical building next door, 354 W 20th, asks $14M finished — same width, same row, same brownstone. We convert 356 to the same finished product and ask the same. Our realistic income value is $5.20–5.63M — and after paying off the $2.41M mortgage, partners net $2.76M–$3.20M on an income sale. Good Cause Eviction has eliminated the value-add investor from the buyer pool. Mayor Mamdani's rent freeze agenda compresses income values further. The mortgage rate resets in August 2027 — holding as income past that date means materially higher debt service on a floating rate. We put in $2.5M on a $5.20M basis, all-in $7.70M, sell the finished home at $14M, and partners walk away with $9.18M at ask — or $7.18M at our $12M floor. That is nearly 3× the net equity an income sale delivers. We execute this ourselves. The proof of concept is next door. The time is now.