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RedTree September 8, 2025 CONSULTING Mr. Bryce Christo, P.E. Michael Crow, RRO Assistant City Engineer President City of El Mirage 10000 North El Mirage Road 2942 North 24" Street El Mirage, Arizona 85335 Suite 114 Phoenix, Arizona 85016 RE: Cost Estimate El Mirage City Hall Ph 602.424.3468 10000 North El Mirage Road mcrow@redtreeco.com El Mirage, Arizona 85335 Mr. Christo, Enclosed is Red Tree Consulting’s preliminary cost estimate for the proposed Tenant Improvement project at El Mirage City Hall. This estimate has been developed directly from the approved concept boards (Alternative 4) and incorporates the scope of work required to deliver the additional office and workspace capacity identified by City leadership. Our approach accounts for selective demolition, new partition construction, structural extension at Rooms 201A-D, MEP modifications, and finishes to match the existing facility, with adjustments for phasing and the added complexity of working within an occupied building. The intent is to provide City Council with a transparent and defensible cost baseline for comparison alongside the contractor’s estimate and to support informed decision-making. Executive Summary The project consists of interior renovations to the first and second floors of City Hall to add 10 new private offices and reconfigure existing spaces as outlined in Alternative 4. Key elements include: e Selective demolition e New wall construction e Relocation of security doors e Finishes to match existing e MEP adjustments (HVAC, power, lighting, data) e Structural cantilever extension The total estimated construction cost is projected at approximately $798,900, inclusive of allowances for working in an occupied facility. Scope of Work e Demolition of select partitions, HR lobby reconfiguration, relocation of security doors. e Construction of 10 new private offices and reconfiguration of storage and work areas. e Structural 2’ cantilever extension at Rooms 201A-201D. e Finish work including flooring, ceilings, and painting to match existing. MEP adjustments including HVAC diffuser relocation, lighting, power, and data extensions. e Relocation of workstations and provision of 1 new workstation. Page 1 of 4 City of El Mirage — City Hall TI ROM Cost Estimate — By Area Area 1 Division Description Subtotal 02 — Demo HR lobby & entry wall demo $12,000 06 — Partitions New Walls $42,000 08 — Doors/Frames New Doors $9,000 09 — Finishes Paint/ceilings/flooring patch $36,000 21/22/23 — MPE HVAC, lighting, power/data $36,600 Construction Subtotal $135,600 Design (8%) Allowance $10,848 FFE Allowance $15,000 Total Area 1 $161,448 Area 2 Division Description Subtotal 02 — Demo Wall removal, emblem relocation $9,000 06 — Partitions New Partitions $28,000 08 — Doors/Frames New Doors $6,000 09 — Finishes Paint/ceilings/floor patch $24,000 21/22/23 — MPE HVAC/power $23,400 Construction Subtotal $90,400 Design (8%) Allowance $7,232 FFE Allowance $10,000 Total Area 2 $107,632 Area 3 Division Description Subtotal 02 —- Demo Storage & corridor adjustments $6,000 06 — Partitions New Partitions $16,000 08 — Doors/Frames New Doors $3,000 09 — Finishes Paint/floor patch $18,000 21/22/23 — MPE HVAC/power $17,600 Construction Subtotal $60,600 Design (8%) Allowance $4,848 FFE Allowance $5,000 Total Area 3 $70,448 Page 2 of 4 Area 4 Division Description Subtotal 02 —Demo Wall removals in Finance $11,000 03 — Structural Minor tie-ins $7,000 06 — Partitions New Partitions $31,000 08 — Doors/Frames New Doors $6,000 09 — Finishes Paint/floor patch $30,000 21/22/23 — MPE HVAC/lighting/data $31,100 Construction Subtotal $116,100 Design (8%) Allowance $9,288 FFE Allowance $10,000 Total Area 4 $135,388 Area 5 Division Description Subtotal 02 —Demo IT lobby demo $10,000 03 — Structural 2’ cantilever (201A—D) $60,000 06 — Partitions New Partitions $34,000 08 — Doors/Frames New Doors $6,000 09 — Finishes Paint/ceilings/floor $30,000 21/22/23 — MPE HVAC/power/data $38,700 Construction Subtotal $178,700 Design (8%) Allowance $14,296 FFE Allowance $10,000 Total Area 5 $202,996 Note: Ceilings are exposed structure; estimate assumes lighting/data drops and limited patch work only. Area 6 Division 02 — Demo 06 — Partitions 08 — Doors/Frames 09 — Finishes 21/22/23 —- MPE Construction Subtotal Design (8%) FFE Total Area 6 Description Storage & corridor reconfig New Partitions New Doors Paint/floor patch HVAC/power Allowance Allowance Subtotal $8,000 $29,000 $6,000 $26,000 $29,600 $98,600 $7,888 $10,000 $116,488 Page 3 of 4 Summary ¢ Construction (all areas): $680,000 © Design (8% allowance, per 1GPA): $54,400 © FFE (all areas): $60,000 © Environmental Allowance (asbestos survey): $4,500 © Total ROM (all areas): $798,900 Notes e Room 114 and Area 5: exposed ceilings; scope assumes device relocations and touch-ups only. e Room 107: ceiling may require modification; included in MEP allowance. e Asbestos survey included as allowance only; 2016 construction = low risk. ROM Disclaimer This estimate is provided as a Rough Order of Magnitude (ROM) for planning purposes only. It is not a contractor's detailed estimate and does not include bid-level quantities, subcontractor quotes, or unit pricing. Final pricing shall be developed by the GC during preconstruction. Prior to commencement of any work a comprehensive asbestos survey, including a written report, should be available and located on the property. Please do not hesitate to contact us at your convenience with any questions or concerns you may have. Thank you, — Heh Michael L. Crow, RRO President Page 4 of 4