Residential Construction Estimator & Administrative Specialist

Costner Building Group; Charlotte (NC); Remote; USD 11,020 - 16,531; Part time

Job summary

A custom home builder is seeking a Residential Construction Estimator & Administrative Specialist to support estimating and administrative functions. This remote role requires 2+ years in residential construction, expertise in budgeting, and skills in bookkeeping. You will perform quantity takeoffs, assemble budgets, manage subcontractor bids, and support financial tracking. The position offers flexible hours and the opportunity for career growth while working in a supportive team environment.

Qualifications

• 2+ years of experience in residential construction estimating or administration.
• Strong ability to read and interpret construction drawings.
• Highly organized and detail-oriented with strong communication skills.

Responsibilities

• Perform quantity takeoffs from construction drawings.
• Assemble detailed project budgets for review.
• Prepare and send client invoices as directed.

Skills

Residential construction estimating

Construction administration

Organizational skills

Budgeting

Bookkeeping

Communication skills

Detail-oriented

Tools

Excel

Google Sheets

Construction software

Job description

Costner Building Group

Residential ConstructionEstimator & 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.

Position Overview

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.

Key Responsibilities

Estimating & Preconstruction Support

• 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

Administrative & Financial Support

• 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

General Office & Process Support

• 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

Qualifications & Experience

• 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

Preferred (But Not Required)

• Experience with Buildertrend, JobTread, 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)

Compensation & Work Structure

• $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