Northfax Chain Bridge

Proposal at a glance

Tax map parcel(s): 57 2 02 024 B, 57 2 02 024 A, 57 2 02 021, 57 2 02 023, 57 2 02 022

Extracted from the city's submitted documents; each figure traces to the text it came from.

• Dwelling units (existing) — "replace a gas station, retail and former restaurant with 271 multifamily"
• Dwelling units (proposed) — "271 multifamily dwelling units in a proposed 8-story building"
• Affordable units (proposed) — "6% of these units to affordable housing"
• Retail (proposed) — "2,253 sq. ft. of ground floor commercial"
• Stories (proposed) — "271 multifamily dwelling units in a proposed 8-story building"
• Parking spaces (proposed) — "316 total parking spaces within 5-levels of structured parking"
• Site area (proposed) — "The 2.30-acre site lies at the northeast corner of Chain Bridge Rd"

Official record

The potential applicant is proposing to replace a gas station, retail and former restaurant with 271 multifamily dwelling units in a proposed 8-story building, 2,253 sq. ft. of ground floor commercial, 316 total parking spaces within 5-levels of structured parking, vehicular access to garage from Chain Bridge Road, a new proposed eat-west road (Northfax Street) and streetscape from Chain Bridge Road, and a new proposed north-south road from Fairfax Boulevard with garage access. The garage and portions of the residential building spans over existing box culvert and a stormwater easement.

• Address: 3575 Chain Bridge Road and 10464-10480 Fairfax Boulevard, Fairfax, VA 22030
• Applicant: Chain Bridge, LLC
• City record

In this wiki

• Positions & open questions
• Impact analysis — screening estimates with assumptions and ranges
• Documents — the city's published record for this project

Open questions

No unresolved questions recorded.

Member commentary

No recorded member positions yet.

Screening-level estimates of the economic and fiscal effects of Northfax Chain Bridge. Figures are decision-support context with named assumptions and sensitivity ranges — not predictions. The full analysis has the interactive assumptions panel and maps; methods documents every formula.

Headline estimates

• metric new-residents unavailable — households x persons per multifamily unit (Rutgers CUPR bedroom-mix multipliers)
• metric annual-capture-project-s-own-ground-floor-retail unavailable — Huff model over individual retail POIs: joint destination+mode choice, P(j,m) ~ A_j * w_m * exp(-b_m t_mj), CES category spend; clusters are a reporting rollup; own retail competes as a destination
• metric new-annual-spending-arriving-on-foot unavailable — walk-mode share of the joint destination+mode Huff choice, summed over businesses; walking loses to driving with walk time, so the remainder of the mode-split budget arrives by car
• metric real-estate-tax-increase unavailable — projected minus current RE tax
• metric net-annual-fiscal-impact-naive-per-capita-method unavailable — incremental new recurring revenue minus service cost (upper-bound cost framing; allocates fixed citywide costs)
• metric net-annual-fiscal-impact-marginal-framing unavailable — incremental new recurring revenue minus service cost (only services that scale with new residents)

Method notes, caveats, and non-headline metrics live on the analysis page.

Documents published in the city's project record, in the order the city lists them. Labels are the city's own and usually carry the document date, format, and size.

• September 11, 2023 Northfax Chain Bridge Overview (PDF, 94KB)
• September 11, 2023 Northfax Chain Bridge Concept Plan (PDF, 526KB)
• September 11, 2023 Facade Examples (PDF, 11MB)
• October 3, 2023 City Council Pre-Application Briefing (PDF, 13MB)
• September 25, 2023 Planning Commission Pre-Application Briefing (PDF, 12MB)
• September 25, 2023 Planning Commission Pre-Application Briefing Video