Lïef Midtown and the conversion of 301 W Osborn

What Lïef Midtown is

Lïef Midtown is a conversion of a 1971 office tower at 301 W Osborn Road in Midtown Phoenix into 22 for-sale condominium residences [1][4]. The building is four stories of cast-in-place concrete over a large subterranean garage, on a corner parcel, and the residences run from one to three bedrooms, 871 to 2,101 square feet, under twelve-foot ceilings [1][4]. The site prices them from $722,085 to $1,877,864 and states a target completion of October 2027 [1].

The project belongs to LÏEF Development Arizona, LLC, the developer, with Jesse Fowler as principal running acquisition, entitlement and pre-development directly [1][4]. It is Lïef's own project, not a client engagement. This page goes deep on the three things that make a conversion different from new construction: the building, the permit path and the design.

The building

The tower was built in 1971 as an office building: four stories of cast-in-place concrete with deep floor plates, a corner site and a large subterranean garage that now holds 51 secured parking spaces [1][4]. The site makes the case for the shell in one sentence: it is the kind of structure no one builds anymore, because almost no one can [1]. The site lists twelve-foot flat ceilings, full-height glass lines on the original deep floor plates, and cast-in-place concrete mass between each home and the city [1].

New interior walls rise in an advanced solid-masonry system, so the quiet the structure was born with carries into every room [1]. The buyer site describes the arrival as a sequence: a motor court, then a karesansui garden of raked gravel and placed stone, then the lobby [1]. Every residence has an outdoor room, either a loggia or a terrace, and the garage assigns each home two to three private spaces, which the site notes is a ratio almost unheard of for an urban Midtown condominium [1]. Select penthouses carry private basement suites of 408 square feet [1].

The conversion plan puts six residences on each of the two lower floors and five on each of the two upper floors [4]. The site names the four levels Level One, Level Two, Level Three and The Penthouses. The twenty-second residence, Mori, is a north-facing penthouse that was added in the final plan and was the last released [1].

How the building was bought

A broker reached out about the tower and Jesse Fowler walked it. LÏEF Development put it under contract for $3.85M in December 2024 and closed in September 2025 [4]. The purchase is the starting point of the record: what happened next was not design. It was settling whether the building could be what the plan needed it to be.

The permit path: locked before the unit count

Three things made the default path of a full-service architecture firm and the standard queue wrong for this building: the parcel's C-1 H-R zoning put a question mark over the whole program, outside quotes for the same scope came in far enough apart that the number had stopped describing the work, and on a conversion the city's plan-review queue is a larger risk than any single code question [4]. The Common Ground record lays out the answer in order.

Zoning first. The city's zoning confirmation in April 2025 and a written plan-check recap in May 2025 confirmed multifamily by right, with no rezone, variance or hearing, before any design work started [4].

Classification before the program. The permit is classified as an existing-building Level 3 alteration under the International Existing Building Code, with a change of occupancy from Group B office to Group R-2 residential [4]. That is the exact case Phoenix's self-certification program is built for. A registered architect of record certifies the set, and the permit issues in one to five business days instead of going through the standard queue [4]. Only after that classification was settled was the program locked: six residences on each of the two lower floors and five on each of the two upper, from 871 to 2,101 SF each [4].

The fire-access appeal early. The city's October 2025 site-plan comments raised fire access. The appeal was filed in December 2025, months ahead of the certification packet, so it could not stall the one step the path depends on [4].

The packet. The 83-page self-certification packet was assembled with fill, page and assembly scripts rather than by hand, in days instead of weeks [4]. In June 2026 the architect of record received a 182-file, nine-section handoff packet, which was then turned into a reusable ten-item template for the next handoff [4].

An independent code study. A July 2026 project meeting found that no complete code study had ever been finished. The owner commissioned an independent owner-side study the next day: 89 pages, every finding cited to a code section and a sheet, with the critical findings handed to the architect pre-cleared [4]. Findings included a plan set title block that carried another parcel's address, an exit-stair separation that looked short of the code distance, a construction type stated three inconsistent ways, and a lift cab that fell short of the ambulance-stretcher minimum [4].

Where it stands. The entitlement and design work is complete, temporary construction is done, and capital is still being raised [4]. This page makes no claim that a permit has issued.

The roof

The rooftop carried a telecom lease. The buyer's opening ask was an easement across the entire roof, and the answer was no, because every mechanical system for the conversion needs penetrations through that roof [5]. The grant was cut to the carrier's existing equipment footprint, and the sale closed in April 2026, with the proceeds paid at closing and the rest of the roof kept for the conversion's equipment, amenity space, a future carrier or solar [4]. A roof deck was dropped because the radiation requirements made it too complex, and the pool was set to resubmit after the main shell is approved [5].

The design

The design concept is Japandi restraint tuned to the Sonoran desert: Japanese craft married to Scandinavian warmth, in oak, honed stone, plaster and blackened steel set against the original concrete [1]. The concept was chosen because it serves the luxury buyer and, as the team put it, there is nothing like it in Phoenix that they know of; the architect, the interior design team and the broker all confirmed the positioning [5].

What every residence includes. The site states that the base finish program is included, not optional, with a curated designer-upgrade path beyond it: wide-plank oak flooring, honed natural stone in kitchens and baths, hand-finished plaster feature surfaces, and blackened-steel details and hardware [1].

The selections program. The finishes are organized in three tiers, Kanso, Shibui and Miyabi, across three design levels: Traditional, Moderately Designed and Highly Designed [7]. Kanso carries a single traditional selection; Shibui and Miyabi each carry one selection per design level [7]. The rule that makes it a ladder is that every option in a tier costs more than every option in the tier below it [7]. A three-metal program of blackened steel, dark-patina bronze and natural brass runs through the whole residence [7]. The program was started on June 23, 2026 and published on July 1, 2026 as a 109-page look book with 33 tiered sections, from flooring to the hearth, behind seven pages of front matter [7].

The brand. The project has its own brand, separate from the company's, built for home buyers and design press: warm earth tones set in Japandi, with a wordmark in Piala [8]. The brand system was a team effort, with Jesse Fowler supplying the name Lïef and the narrative and Jimmy Khounlavong working on the identity and the guide [8].

The plans. The plan sets were a group effort. Scott Meiers is the project's chief architectural designer, and Jesse Fowler compiled the sets [9]. An architect of record holds the stamp and certifies the set. In September 2026 the compiled plan set moved behind a gate on the project domain, and a 141-page set replaced the earlier file on September 11, 2026 [9].

The model and its check. Lïef built the Revit model in house, with the architect of record keeping the stamp and the certification. Fourteen specialist skills drive a 138-tool connection into Revit, and the model reached 12,684 elements; the agentic tools carried roughly 40 percent of the architectural work [4]. Against outside quotes of $300,000 to $400,000 for the same scope, the in-house direct spend was about $12,000, a differential of roughly $150,000 before the team's own hours [4]. The model's geometry is exported and checked by agents against code parameters and the project's design criteria, and a person clears every flagged item. The check flagged two errors, a wrong building setback among them, before a person reviewing alone would have had to [4].

The 22 residences

The residences run from about 870 to about 2,100 interior square feet, from one bedroom to two bedrooms plus a den, across three residential levels and a penthouse level. As printed on liefmidtownphx.com on October 7, 2026, prices run from $722,085 to $1,877,864. The site says pricing, availability, finishes and dues are preliminary and subject to change, and that dimensions and square footages are approximate; for current numbers and each residence, the site is the source of truth [1].