1 Helen Street, Nob Hill
One Helen.
Four floors and three outdoor rooms, at the top of Nob Hill.
Custom home to be built — now accepting reservations.
Now Being Offered Privately
Private tours and details are available to qualified prospective purchasers prior to public offering.
Artist's visualization — representative only and subject to change
New Construction
2,492 Sq Ft
Neighborhood
Nob Hill
Outdoors
Terraces · Patio
Live Here
Artist's visualization — representative only and subject to change
The Living Room
A linear fireplace sits low in the wall, and fourteen feet of glass slides away to the planted patio. Warm wood, deep seating, and sight lines the whole depth of the house. City houses do not usually open like this.
Artist's visualization — representative only and subject to change
The Terrace
Open air at the top of the house. Grasses in the planters, lounge seating, lanterns for when the light goes.
Artist's visualization — representative only and subject to change
The Primary Suite
The whole third floor is the primary suite: bedroom, bath, dressing room, and a terrace off it. Marble runs floor to ceiling in the bath, around a freestanding tub and a walk-in shower.
Artist's visualization — representative only and subject to change
The Oasis
Off the living room, a walled patio takes the morning sun — 221 square feet of it, planted. In San Francisco that is not a small thing.
Interiors
Considered details
Artist's visualization — representative only and subject to change
Schedule a Private ConsultationThe Residence
New on a hundred-year-old street
Warm wood over a stone base, charcoal panel above, black-framed glass, planted terraces stepping up the front. The garage sits behind it.
Artist's visualization — representative only and subject to change
The Layout
Explore every level
Four floors — from the street-level living rooms up to the private guest suite and open-air terrace on top. Each point marks where a render was shot; hover or tap to preview, then open the full view.
The Plans
Four Floors, One Home
Every level of One Helen Street, drawn from the approved architectural plans.
Foyer · Living Room · Dining Room · Kitchen · Garage · Patio, 221 sq ft
Preliminary plan, illustrative only. Dimensions and room configurations are approximate and subject to change. Not to scale as reproduced.
Artist's visualization — representative only and subject to change
At a Glance
The Details
- Address
- 1 Helen Street, Nob Hill, San Francisco
- Type
- New Construction · Ground-Up Custom
- Living Space
- 2,492 Sq Ft
- Levels
- 4
- Terraces
- 3rd & 4th Floors · Glass Guardrail
- Fitness
- Private Workout Room
- Garage
- Private · EV Charging
- Comforts
- Electric Fireplace · Laundry
- Outdoors
- Terraces · Patio
- Setting
- Nob Hill
- Status
- Pre-Sale
Design & Engineering
- Architect
- William Pashelinsky
- Structural Engineer
- Kevin O'Connor
- Soils Engineer
- Christian Divis
Nob Hill, San Francisco
Artist's visualization — representative only and subject to change
The Neighborhood
The city at your door
Nob Hill has been the city's high ground since the cable car made the summit reachable in the 1870s. The great houses of the era went up here; the grand hotels and Grace Cathedral followed.
One Helen sits mid-hill on a quiet, tree-lined block. Downtown and the Financial District are minutes away, and the restaurants are closer than that.
Downtown SF
5–10 min walk
Oakland
20 min
San Jose
60–90 min
The neighborhood around Nob Hill
The Smart Custom Home™
Why settle for someone else's vision — or spend years creating your own?
The Smart Custom Home™ combines the personalization of a custom home with the simplicity and certainty of buying a professionally managed new luxury residence. Most buyers assume an existing home is the faster path. It usually isn't.
| The Smart Custom Home™One Helen Street | An existing luxury homeBought and then renovated | A traditional custom homeLand, architect, contractor | |
|---|---|---|---|
| Brand-new home | Yes | No | Yes |
| Designed around today's lifestyle | Yes | Often outdated | Yes |
| Luxury finishes you choose | Extensive personalization | Often requires major remodeling | Unlimited |
| Construction or renovation required after purchase | None | Often extensive | Complete new construction |
| Time until your home is truly finished | About 9 to 12 months | Often 12 to 24 months or more, after renovation | Often 18 to 36 months or more |
| Construction and design managed for you | Completely by Bianchi | You manage architects, designers and contractors through the remodel | You manage the entire design and construction process |
| Pricing certainty | Fixed-price construction agreement | Renovation costs are often uncertain and rise after purchase | Budgets frequently evolve during construction |
| Total time and investment to get the home you actually want | One streamlined process | Purchase price plus renovation, architectural and engineering fees, carrying costs, and temporary housing | Land, design, construction and soft costs, each managed separately |
| Design compromises | Minimal | The existing layout and structure limit what is possible | None |
| Overall experience | The best of both worlds | Faster to buy — but slower and more expensive to make your own | Ultimate flexibility — but the longest and most demanding path |
- The Smart Custom Home™ — One Helen Street
- An existing luxury home — Bought and then renovated
- A traditional custom home — Land, architect, contractor
Brand-new home
- The Smart Custom Home™
- Yes
- An existing luxury home
- No
- A traditional custom home
- Yes
Designed around today's lifestyle
- The Smart Custom Home™
- Yes
- An existing luxury home
- Often outdated
- A traditional custom home
- Yes
Luxury finishes you choose
- The Smart Custom Home™
- Extensive personalization
- An existing luxury home
- Often requires major remodeling
- A traditional custom home
- Unlimited
Construction or renovation required after purchase
- The Smart Custom Home™
- None
- An existing luxury home
- Often extensive
- A traditional custom home
- Complete new construction
Time until your home is truly finished
- The Smart Custom Home™
- About 9 to 12 months
- An existing luxury home
- Often 12 to 24 months or more, after renovation
- A traditional custom home
- Often 18 to 36 months or more
Construction and design managed for you
- The Smart Custom Home™
- Completely by Bianchi
- An existing luxury home
- You manage architects, designers and contractors through the remodel
- A traditional custom home
- You manage the entire design and construction process
Pricing certainty
- The Smart Custom Home™
- Fixed-price construction agreement
- An existing luxury home
- Renovation costs are often uncertain and rise after purchase
- A traditional custom home
- Budgets frequently evolve during construction
Total time and investment to get the home you actually want
- The Smart Custom Home™
- One streamlined process
- An existing luxury home
- Purchase price plus renovation, architectural and engineering fees, carrying costs, and temporary housing
- A traditional custom home
- Land, design, construction and soft costs, each managed separately
Design compromises
- The Smart Custom Home™
- Minimal
- An existing luxury home
- The existing layout and structure limit what is possible
- A traditional custom home
- None
Overall experience
- The Smart Custom Home™
- The best of both worlds
- An existing luxury home
- Faster to buy — but slower and more expensive to make your own
- A traditional custom home
- Ultimate flexibility — but the longest and most demanding path
Why buyers choose it
Most luxury buyers assume purchasing an existing home is the fastest path. It often isn't.
After closing, many spend months — sometimes years — working with architects, interior designers, contractors and the city's permitting department to strip outdated finishes, reconfigure rooms and modernize the house. Through all of it they keep paying property taxes, insurance and financing, and often the cost of living somewhere else while the work is underway.
Instead of paying to undo someone else's decisions, you personalize the finishes before construction begins.
With The Smart Custom Home™ you begin with a brand-new, architecturally designed residence that is already entitled and ready to build. The result is a home that reflects your taste, without the disruption, uncertainty and inefficiency of a major renovation.
Comparisons describe general industry practice and are provided for illustrative purposes only. Timelines, costs and processes vary by property, builder and market, and individual results will differ. Nothing here is an offer to sell or a solicitation of an offer to buy real property. Custom Home Coming Soon. Reservations Now Being Accepted, Subject to Acquisition of Property. Equal Housing Opportunity.
Schedule a Private ConsultationHow does buying pre-sale work?
See the ProcessThe Builder
Built by Bianchi Group Developers
Bianchi Group Developers has spent more than two decades building in Northern California — over 600,000 square feet of luxury homes across hundreds of projects.
A transparent budget, weekly updates, and a builder who answers the phone.
25+ Years
Building in Northern California
600,000+
Sq Ft Built
Hundreds
Luxury Projects
By Private Appointment
Schedule a private consultation for One Helen.
“Paul and his team were transparent about costs, responsive throughout the entire build, and delivered a home that exceeded everything we had envisioned.” — Jason M., Roseville, CA
Schedule a Private Consultation15 minutes · No obligation
1 Helen Street is a custom home to be built. All images are artist's renderings and visualizations for illustrative purposes only. Features, finishes, materials, landscaping, square footage, and views shown are approximate and subject to change without notice; the completed home may differ. Renderings should not be relied upon in making a purchase decision.