A two-parcel compound where a 1926 home, a certified net-zero passive house, and a private carriage house share one continuous story — and one very good garden.
In December 2020, an appraiser stood behind a century-old home on Oak Street and looked at the empty lot next to it — his notes called it exactly that, vacant. Everything since has been building toward one idea: the empty lot and the old house were never really two properties. They were one unfinished thought.
That lot became 990 Oak: a 660-square-foot passive house, PHIUS Zero certified, powered by owned solar, designed from the foundation up on sacred-geometry principles by GeoAlchemy Studio. A few steps away, the 1926 home at 998 Oak was brought back to life — new roof, siding, windows — and its carriage house rebuilt into a fully self-contained third dwelling.
The result isn't a house with an addition tacked on. It's a compound: three dwellings, two parcels, one connected site, conceived and built as a single deliberate whole — down to the garden paths that tie it together.
Someone whose work and life are already blended together — who wants a home, and a few steps away, a space entirely their own to practice, create, host, or think. Someone who notices when a room has been designed with intention instead of assembled from a catalog.
A separate address and a private garden entry mean clients arrive somewhere distinct from your family's front door.
A dedicated, purpose-built studio for calls, workshops, and client sessions — without a home office wedged into a bedroom.
A quiet, light-filled studio built on sacred-geometry proportions — the kind of room that changes how you work in it.
Net-zero performance, brass hardware, hand-glazed tile, gold-inlaid doors — nothing here was left to default.
“Live in the house. Practice in the passive house. Let the carriage house pay for itself.”
Each building does a different job. Together, they let you live, work, and earn without ever leaving the property.
LiveThe compound from above — main house, passive house, and shared courtyard.
A century-old home brought current — new roof, siding, and windows — without losing the details that made it worth saving. This is the anchor of the compound: the place you come home to.
Practice990 Oak at dusk — PHIUS Zero certified, net-zero, its own entry.
As a house, 660 square feet is small. As a studio, it's exactly right — a workshop, a treatment room, a teaching space, built on sacred-geometry proportions that clients feel the moment they walk in.
Interior photography of the carriage house is coming with the full listing.
A fully self-contained third dwelling — guest suite, private office, or rental income, your call. Photos of the interior are coming with the full listing.
From the rain chains to the door inlays, every fixture carries the same design language — brass, gold line-work, and geometry that repeats at every scale.
The hardscape isn't landscaping added after the fact — it's roughly $40,000 of sacred-geometry design in stone and plant, and it's what makes two parcels read as one composed environment.
Beyond the spiral, the site includes Brazilian cumaru hardwood fencing around the entire property, raised garden beds, a pergola strung with café lights, a fire pit, and a private courtyard at 998 — plus a 2.5-car attached garage and three additional off-street parking spaces, genuinely rare for this neighborhood. Mature trees were preserved through construction, and a new Japanese maple was added for good measure. Every fall, a small cast of hand-painted wooden animal heads takes up residence along the fence line — proof that whoever built this place doesn't take themselves too seriously.
On the front porch of 998 Oak stands a life-size unicorn. It has weathered more Columbus winters than most of the neighbors, developed something of a following on the block, and asks for nothing in return.
Should its presence feel essential to your future life on Oak Street, it's included with the sale — free of charge, entirely optional. No pressure. It's just there. It's magic like that.
Sacred geometry and pure whimsy, shaking hands.
Professional photography, floor plans, and the complete story of this compound are being prepared now. Leave your email and be the first to know the moment it's live.