South Burlington DRB reviews Beta Technologies subdivision, debates waivers tied to airport rules

The South Burlington Development Review Board on March 4 considered a continued final plat application from Beta Technologies to subdivide an airport property into three leased parcels and spent most of the night debating waiver requests tied to Federal Aviation Administration (FAA) constraints, lot configuration, access and survey monumenting.

The subdivision application (SD 2501) would divide an existing airport parcel into three lots: Lot A (3.01 acres), Lot B (0.92 acres) and Lot C (0.14 acres) for the purpose of leasing the lots to Beta Technologies while retaining the parent airport lot. Beta Technologies representatives and airport counsel told the board the configuration is driven by FAA and airport operational constraints and asked the board to grant multiple waivers under the Land Development Regulations (LDR).

Why it matters: The board’s decision will set how South Burlington treats small, irregular airport lease parcels when federal aviation requirements shape lot lines and site access. Board members examined whether the LDR waiver standard — including tests that a modification be the minimum necessary and not nullify regulatory intent — can be met where federal or lease constraints limit what can be changed.

Board members and staff concentrated on several recurring issues: whether the FAA’s requirements create a legal constraint that justifies waivers under the city’s LDR, how to document existing lot coverage so a waiver does not become open-ended, whether the two small lease parcels could meet minimum lot-size rules or should be treated as non‑buildable airport apron, and whether the required 20‑foot permanent access easement should be reduced to the 18‑foot gate width that exists on the ground.

Applicant and attendees: Alex Gagnon, representing Beta Technologies, said the subdivision is intended to document existing leasing arrangements and that the company did not intend to renegotiate the underlying airport lease. Malachi Brennan of SRH Law, representing Beta, summarized the waiver requests and argued the waivers are grounded in the airport’s property controls and FAA regulations. Larry Lackey, an airport representative, and Chris Gendrick of Stantec were present to support the application. City staff—Marty Gillis and Marla Keane—walked the board through staff findings and recommended conditions.

Key points and board decisions

- Waiver standard and FAA/regulatory context: Board members reviewed the three-part waiver/modification test in the LDRs (public health/safety necessity; minimum necessary relief; and whether the waiver preserves the regulations’ intent and purpose). Counsel and staff noted a city-attorney opinion in the packet that analyzed preemption and concluded FAA regulations can preempt local rules in this area, but the board was urged not to rest on preemption alone. Instead, members were advised they may grant waivers if they find legal constraints specific to the land make strict application of the standards impossible. Malachi Brennan told the board the “basis for each of the waivers is essentially the same and it's based on how the airport views its property and how the FAA regulations apply here.”

- Lot coverage: Staff recommended the board require the applicant to compute current lot coverage and front‑setback coverage for each proposed lot and record those numbers as the maximum permitted coverage for future development. Board members agreed that, if coverage is waived, the waiver should be tied to the existing, measured coverage rather than allowing open‑ended increases. The applicants were told to submit that computation as a condition.

- Minimum lot size and redevelopment demonstration for Lots B and C: Two of the proposed lease parcels are smaller than the LDR minimum lot area. Staff recommended that if the board treats the lease as a subdivision it should require the applicant to submit a plan showing the lots can be redeveloped prior to closing the hearing; staff indicated that demonstration could justify a modification for minimum lot size. Board members questioned whether the regulation’s “surface parking lot” language applied given these parcels function as airport apron and aircraft-related areas rather than vehicle parking. The applicant and airport representatives said federal regulations and the lease limit potential redevelopment; the board discussed conditioning future development reviews so any future change in use would return to the board.

- Side setback waiver: Staff described the requested side setback waiver as relatively minor (applicants requested a 28‑foot side setback where 35 feet is required) and recommended approval. Board members indicated they had no objection to that waiver.

- Access easement — 20 feet vs. existing 18‑foot gate: Staff recommended requiring a permanent 20‑foot legal right-of-way to access Lot C when a lot does not have public street frontage. The plan on file showed an 18‑foot gate/aisle where vehicles (and airport operations) use the pavement. Board members pressed the applicant for the basis to reduce the standard to 18 feet. The applicant explained the 18‑foot gate reflects existing airport improvements and the airport’s operational needs. After discussion the airport representatives agreed to provide a 2‑foot easement so that a 20‑foot legal access easement will be shown on the plat; applicants said they would show that on a revised plan.

- Monumenting and permanence: Staff recommended the board not waive the requirement to place permanent reference monuments, noting staff saw no evidence the subdivision was less permanent than others and that lot lines on the plan are “particularly difficult to follow.” Board members concurred with staff that whatever the chosen monument type, the survey must meet the standard and be durable enough to be found later.

- Combined preliminary and final plat: Staff noted the board had not been asked explicitly at sketch to combine preliminary and final plat hearings and recommended the board affirm prior practice accepting a combined preliminary/final hearing. A board member stated, “I affirm it,” and members agreed.

Public comment and close: No public speakers spoke during the hearing on this application. After confirming remaining conditions (including the lot‑coverage computation and showing the 20‑foot access easement on the plan), a member moved to close the hearing. The board voted in favor and closed the hearing.

What the board asked applicants to provide: staff and the board directed the applicant to submit (1) a lot‑coverage calculation for each proposed lot to establish maximum permitted coverage under any granted waiver, (2) a revised plan that shows a 20‑foot access easement to Lot C (the applicant agreed to record a 2‑foot easement strip to reach 20 feet), and (3) permanent reference‑monument details on the survey.

The board’s deliberations centered on applying the LDR’s waiver/modification tests where federal aviation requirements and an airport lease shape parcel lines. The board did not resolve any final waivers at that meeting; instead it closed the hearing with conditions the applicant must satisfy for a decision to be drafted.

Ending: The board closed the hearing after the applicant agreed to provide the requested lot‑coverage figures, to show a 20‑foot access easement on the revised plat, and to provide monumenting details required by staff. The record will remain open for staff to confirm those submissions before the board’s decision is issued.