Available at: https://dese.mo.gov/college-career-readiness/curriculum/missouri-learning-standards Hawkins, H. and Lilley, E. (1998) Guide for School Facility Appraisal. 1998 Edition. Phoenix, Arizona: Council of Educational Facility Planners, International. COST ESTIMATIONS COST ESTIMATIONS 149 As part of our facilitation of the Long-Range Facilities Master Plan, Paragon Architecture provided cost estimations covering all the identified improvements within the district. The construction cost estimates provided were based on needs assessment data and are conceptual in nature based on the conceptual information provided within the assessment data. Cost estimate documentation includes: • Long-term replacement plan for HVAC systems at nine locations. • Document estimates for parking lots and drive maintenance and replacement plans at nine locations. • Document estimates for exterior lighting improvements at nine locations. • Document estimates for exterior building envelope improvements at nine locations. • Document estimates for renovations/addition options at six locations (Clayton High School, Wydown Middle School, Captain Elementary School, Glenridge Elementary School, Meramec Elementary School, Gay Field, and The Family Center). • Document estimates for playground improvements at five locations. • Document estimates for playing field and track improvements at all three elementary schools, the middle school, and the high school. • Document estimates for improvement items individually identified by each school in the district. The goal of these estimates is to be able to holistically look at improvements needed across the district from an immediate, non-immediate, and future need. COST ESTIMATES INTRODUCTION

The goal of these estimates is to be able to holistically look at improvements needed across the district from an immediate, non-immediate, and future need. COST ESTIMATES INTRODUCTION 150 Paragon Architecture completed the construction cost estimates for the School District of Clayton’s 2024 Facilities Masterplan. These design options are only conceptual in nature and will need further development including architectural and engineering design services. It is recommended that the district completes preliminary design or schematic design level documentation on all potential projects prior to developing bond project proposals to the community. The construction cost estimates include the condition assessment data completed by Paragon, along with design options for Level 2 and Level 3 Improvements. The Level 2 and Level 3 Improvements are based on feedback received from the district during the masterplan process from the steering committee meetings, sub-committee meetings, and community forums. Individual Level 1 type projects were not included as separate summary line-item cost estimates as they comprise any combination of annual capital improvement type projects identified in the condition assessment data or individual components of the Level 2 Improvement projects identified at each site. Also, please note the following regarding the cost estimates: • Construction cost estimate details are estimated at current day 2025 construction values based on square foot costs of similar projects in the STL metro area and do not include property acquisition. The Owner shall apply an appropriate amount escalation factor based on the actual anticipated construction start of the scope of work. • High priority items – identified with red in the estimates and defined by Paragon as improvements that should be made within a 2–5-year range and should plan for a 5-10% escalation factor. • Medium priority items – identified with yellow in the estimates and defined by Paragon as improvements that should be made within a 5–10-year range and should plan for a 10-20% escalation factor. • Low priority items – identified with green in the estimates and defined by Paragon as improvements that should be made within a 10–15-year range and should plan for a 20-40% escalation factor. • Other project costs including soft costs such as architectural/engineering design fees, FF&E (furniture, fixtures and equipment), construction management fees, survey, geotechnical, testing and inspection fees, permitting, etc. are not included within these construction cost estimates. For planning purposes, which will be dependent on the actual scope of work, an approximate additional 15-20% cost is recommended to be added to the construction costs. DELIVERABLES OVERVIEW

For planning purposes, which will be dependent on the actual scope of work, an approximate additional 15-20% cost is recommended to be added to the construction costs. DELIVERABLES OVERVIEW 151 The Clayton School District has approximately $23.5 million dollars in immediate needs (2-5 Years), indicated in red, including proposed HVAC, Building Envelope, Roofing, Playgrounds & Playfields, Flooring, Ceilings, Interior Walls, Parking Lot & Drives, Exterior Lighting, and Restroom improvements. Over the next 5-10 years the Clayton School District has approximately $28.3 million dollars in facility maintenance, replacement, and renovation needs. In all, the facility master plan process, identified, prioritized, and documented just over $94 million dollars in facility improvements over the next 10+ years. The pages that follow provide a structured summary of the Long-Range Facility Master Plan findings. First, summary tables present an overview of the High-Level Cost Estimate Totals, organized by location (Clayton High School, Wydown Middle School, Captain Elementary School, Glenridge Elementary School, Meramec Elementary School, Gay Fields & Ancillary Buildings, The Family Center, Administrative Center, and Facility Services) and by Assessment Scope (HVAC, Building Envelope, Roofing, Playgrounds & Playfields, Flooring, Ceilings, Walls, Parking Lots & Drives, and Exterior Lighting). Following these, a summary table outlines the High-Level Cost Estimate Totals for the Proposed Future Development Projects, offering cost estimates that correspond with each location’s Conceptual Design Option(s) that are presented in Volume IV of the Master Plan. After these high-level summaries, more detailed tables break down the cost estimates for each conceptual design option, itemized by location and Assessment Scope. COST ESTIMATES SUMMARY OF RESULTS

After these high-level summaries, more detailed tables break down the cost estimates for each conceptual design option, itemized by location and Assessment Scope. COST ESTIMATES SUMMARY OF RESULTS COST ESTIMATES // SUMMARY f~ THE SCHOOL DISTRICT OF CLAYTON NTS Clayton High School $7,614,544 $13,238,170 $15,623,709 $36,476,422 Wydown Middle School $1,129,401 $3,283,716 $13,210,122 $17,623,239 Captain Elementary School $3,216,077 $4,222,330 $1,967,932 $9,406,339 Glenridge Elementary School $3,133,871 $2,289,230 $3,221,942 $8,645,042 Meramec Elementary School $4,522,796 $2,483,300 $4,734,302 $11,740,397 Athletics & Activities $986,821 $647,649 $865,139 $2,499,609 The Family Center $2,104,975 $533,347 $1,484,305 $4,122,628 Administrative Center $558,735 $1,167,919 $1,160,071 $2,886,725 Facility Services $191,704 $439,397 $105,372 $736,473 PRIORITY TOTAL $23,458,924 $28,305,058 $42,372,894 $94,136,875 HVAC $18,786,495 $4,258,800 $12,051,000 $35,096,295 Envelope $1,601,498 $12,358,797 $760,449 $14,720,744 Roofing $1,270,070 $5,409,444 $6,094,320 $12,773,834 Playgrounds & Playfields $403,166 $1,084,965 $1,580,511 $3,068,642 Flooring $208,922 $675,661 $8,765,007 $9,649,590 Ceilings $305,685 $1,346,213 $3,674,371 $5,326,269 Walls $332,522 $1,995,749 $8,009,258 $10,337,529 Parking Lots & Drives $132,944 $891,197 $1,437,977 $2,462,118 Exterior Lighting $417,622 $284,232 $0 $701,854 PRIORITY TOTAL $23,458,924 $28,305,058 $42,372,894 $94,136,875 152 COST ESTIMATES // FUTURE DEVELOPMENT PROJECTS SUMMARY For more information about the conceptual design options that these cost estimates refer to, please see the Future Development Plans section in Volume IV of the Master Plan. f~ THE SCHOOL DISTRICT OF CLAYTON er ./ JANUARY 10, 2025 | HIGH LEVEL COST ESTIMATE — FUTURE DEVELOPMENT PROJECTS cae ROOFING, HVAC, PROJECT MARKUPS &

cae ROOFING, HVAC, PROJECT MARKUPS & & LIGHTING TOTAL SUB-TOTAL CONTINGENCY Clayton High School $16,167,600 $8,029,093 $24,196,693 $29,036,032 Wydown Middle School $2,759,995 $787,205 $3,547,200 $4,256,639 Captain Elementary School $12,614,190 $3,055,733 $15,669,923 $18,803,908 Glenridge Elementary School - Proposed Design 1 $17,710,006 $3,047,803 $20,757,809 $26,985,152 Glenridge Elementary School - Proposed Design 2 $17,019,881 $3,047,803 $20,067,684 $26,087,990 Glenridge Elementary School - Proposed Design 3 $29,759,882 $3,047,803] $32,807,685] $44,290,375 Meramec Elementary School - Proposed Design 1 $15,045,650 $4,137,160] $19,182,810} $24,937,652 Meramec Elementary School - Proposed Design 2 $16,535,125 $4,137,160 $20,672,285 $26,873,970 Meramec Elementary School - Proposed Design 3 $28,942,125 $4,137,160 $33,079,285 $44,657,034 Clayton High School - Athletics & Activities - Proposed Design 1 $19,362,852 $19,362,852 $23,235,422 Clayton High School - Athletics & Activities - Proposed Design 2 $23,299,800 $23,299,800 $30,289,740 The Family Center $4,261,345 $1,539,500 $5,800,845 $7,541,098 Breakdown of Athletics & Activities Proposed Designs by Site Location FUTURE DEVELOPMENT EXISTING FUTURE TOTAL WITH GC FACILITY PROJECT LEVEL ENVELOPE, DEVELOPMENT MARKUPS & ROOFING, HVAC, PROJECT & LIGHTING TOTAL SUB-TOTAL CONTINGENCY Athletics & Activities - City Owned Athletic Fields Proposed Design 1 $4,800,000 - $4,800,000 $4,800,000 Athletics & Activities - Gay Fields Proposed Design 1 $14,562,852 - $14,562,852 $14,562,852 Athletics & Activities - City Owned Athletic Fields Proposed Design 2 $17,949,800 - $17,949,800 $18,129,298 Athletics & Activities - Gay Fields Proposed Design 2 $5,350,000 - $5,350,000 $5,403,500 153