Architecture & Construction — Antigua & Barbuda
4TH Floor Inc. is a full-service firm delivering architectural design, construction documents, building materials, project management and construction — all under one roof.
What we do
Architectural Services
Conceptual design, construction drawings, and DCA approval submissions for residential and commercial projects.
Building Materials
Distribution of quality building materials to support your construction project from the ground up.
Project Management
End-to-end oversight of your project — coordinating teams, timelines, and budgets to keep things on track.
Construction
Hands-on construction execution, bringing your approved designs to life with quality and precision.
Architectural process — 3 phases
Phase 01
Conceptual Design
Tiered by project sizeflat fee
| Size | Sq ft | Fee |
|---|---|---|
| Small | Up to 1,500 | XCD $2,000 |
| Medium | 1,501–3,000 | XCD $3,000 |
| Large / Commercial | 3,001+ | XCD $4,500 |
Phase 02
Construction Documents
Tiered by project sizeper sq ft
| Size | Arch & MEP | Structural |
|---|---|---|
| Small Up to 1,500 | $4.50/sq ft | $2.20/sq ft |
| Medium 1,501–3,000 | $3.80/sq ft | $1.86/sq ft |
| Large 3,001+ | $3.40/sq ft | $1.65/sq ft |
Phase 03
DCA Approval
XCD $600flat fee
Project cost estimator
Enter your square footage — rates are applied automatically by project size.
Phases to include
Get in touch
Tell us about your project and we'll get back to you with a detailed breakdown and next steps.
Contact details