Residential Construction Estimator & Administrative Specialist

Costner Building Group Residential Construction Estimator & Administrative Specialist

Costner Building Group is a high-performance custom home builder focused on creating healthier, more durable, and architecturally significant homes. Guided by building science and disciplined execution, our mission is simple:
Build Better, So You Live Better.

We specialize in high-end custom homes and select luxury developments in the Charlotte, NC region. Our team values clarity, accountability, and continuous improvement -- and we are looking for a detail-oriented professional to help support our preconstruction and administrative operations.

We are seeking a Virtual Estimator & Construction Administrative Specialist to support both preconstruction estimating and core administrative / bookkeeping functions. This role is ideal for someone with residential construction experience who enjoys organizing information, managing numbers, and assembling clean, accurate budgets for leadership review.

This is a remote position with consistent weekly hours and long-term growth potential.

• Perform quantity takeoffs from construction drawings and specifications
• Assemble detailed project budgets for review by the Project Manager and leadership team
• Solicit, track, and organize subcontractor bids
• Level subcontractor proposals to ensure scope completeness and accurate comparisons
• Maintain historical cost data and assist with budget updates as pricing changes
• Support subcontractor estimating management and bid coordination

• Prepare and send client invoices as directed
• Assist with accounts payable and accounts receivable tracking
• Maintain updated records of office and project-related expenses
• Track Certificates of Insurance (COIs) and ensure compliance
• Maintain and organize executed Master Subcontractor Agreements
• Support documentation and file management related to projects and vendors

• Maintain organized digital filing systems
• Assist with process documentation and standardization
• Communicate professionally with subcontractors, vendors, and internal team members
• Support leadership with reporting and data organization as needed

• 2+ years of experience in residential construction estimating, construction administration, or a related role
• Strong ability to read and interpret construction drawings and specifications
• Experience performing takeoffs and assembling construction budgets
• Familiarity with subcontractor bid coordination and scope review
• Comfortable with bookkeeping tasks such as invoicing and expense tracking
• Proficient in Excel / Google Sheets; experience with construction software a plus
• Highly organized, detail-oriented, and deadline-driven
• Strong written communication skills
• Self-motivated and comfortable working remotely with minimal supervision

• Experience with Buildertrend, Job Tread, CoConstruct, or similar construction management software
• Familiarity with high-end residential construction or custom homes
• Prior experience working with a U.S.
  
  -based general contractor or home builder
• Must be fluent in English (reading, writing, and speaking)

• $8.00 - $12.00 USD per hour compensation based on experience
• Employer pays fees
• Consistent workload with clear expectations
• Long-term opportunity with potential for expanded responsibilities
• Flexible work environment with a supportive, professional team