How Drawing Review Cut Repeat Errors on Atlanta Affordable Housing
- Four affordable housing sets reused unit types whose waste stacks missed the slab openings on every floor.
- Helonic checked the repeating stacks on the PDF sets and counted every floor that copied the miss.
- The firm cleared 692 issues and kept an estimated $340,000 of repeated stack fixes out of construction.
Atlanta, GA. 692 issues across 4 projects.
Issues Detected
692 across 4 sets
Projects
Four Atlanta sites
Estimated Savings
$340K repeated fixes
692 Repeated Errors Across Four Affordable Housing Sets
An architecture firm had four affordable housing jobs in Atlanta under one funding calendar. Each set reused a handful of unit types, stacked floor over floor.
Waste stacks on the plumbing sheets missed the slab openings on three of the four buildings. The same miss showed up in every stacked copy of the unit. That is a core drill on every floor, not a note on a code sheet.
A correction in one typical unit had to be proven on every copy, or the housing review would comment on each building separately.
Helonic Counted the Stack Misses Before They Were Cored
They uploaded all four PDF sets. Helonic checked one unit type, then counted the floors and buildings that copied the same stack miss and the same rated-wall tag.
The combined list was 692 issues. Most of the money was stack alignment. Code notes on baths and wall tags were in the list and were not the coring.
Findings were grouped by unit type so one redline could be applied to every copy.
See affordable and multifamily drawing review, Georgia plan review requirements, the Pacific Northwest affordable housing case study, how multifamily drawing sets get reviewed, stacking analysis, and the Denver apartment review.
$340,000 in Repeated Stack Fixes Kept Off the Job
The firm fixed the typical stacks and the assembly numbers before the housing packages went out. Review after the fix covered the unit types, not every repeated plan.
They estimated $340,000 if those stack misses had been cored on site across the four buildings.
The housing review still asked for accessibility dimensions in one community room. The repeated unit stacks were not in the comments.
Repeated stack misses are the multifamily version of a common problem. Across 1,000+ drawing packages Helonic has reviewed, about 8 in 10 had at least one coordination conflict between disciplines. See what Helonic found across 1,000+ drawing reviews.
Georgia DCA Review and Fair Housing Rules Behind 692 Repeated Issues
Georgia buildings are permitted under the Georgia State Minimum Standard Codes, which adopt the International Building Code with state amendments. The City of Atlanta reviews the permit.
Tax credit housing adds a second reviewer. The Georgia Department of Community Affairs allocates Low-Income Housing Tax Credits and reviews the architectural drawings against its own design standards, including accessibility.
Buildings with four or more units also fall under the federal Fair Housing Act design requirements, and projects with federal funding can add Section 504 accessible units. A unit plan that is wrong once is wrong in every copy, so a missed accessibility dimension repeats as fast as a missed stack.
Waste stacks cross rated floors. Each opening needs a tested firestop system, so a stack cored in the field also needs new firestopping and an inspection on every floor it passes.
“One bad stack in a typical unit is four buildings of the same bad stack. Helonic counted 692 copies of those errors before the Atlanta sets went in.”
Atlanta Affordable Housing Review: Questions and Answers
Does this replace a Georgia housing review?
No. The firm used it to fix the repeating waste stacks before the housing package. The agency still reviews the set.
Where did the 692 issues come from?
Four completed Helonic reviews. The same unit types and the same stack misses showed up on each Atlanta job, and 692 is the combined count.
How is this different from a single multifamily story?
This one is an architecture firm checking four Atlanta affordable housing sets, not a contractor GMP review of one Denver building.
Who reviews affordable housing drawings in Georgia?
The City of Atlanta reviews the building permit. For tax credit projects, the Georgia Department of Community Affairs also reviews the architectural drawings against its design standards.
What accessibility rules apply to affordable housing?
Buildings with four or more units fall under the Fair Housing Act design requirements. Projects with federal funding can also require Section 504 accessible units.
Why did the issue count climb so fast?
Each set reused a few unit types stacked floor over floor. One miss in a typical unit appeared on every floor and in every building that copied it.
Manas Gandhi
Co-founder & CTO, HelonicManas is the co-founder and CTO of Helonic, where he leads engineering and AI research for construction drawing analysis. He works directly with structural, MEP, civil, and fire protection engineers to translate the way they review drawings into AI systems that flag the issues that actually matter in the field. Before Helonic, he built machine learning pipelines for technical document understanding and has spent the last several years interviewing licensed design engineers and discipline leads to ground product decisions in real practice rather than industry assumptions.
- AI for technical document understanding
- Cross-discipline coordination workflows
- Code compliance automation (IBC, NEC, NFPA, IPC, IMC, ASCE)
- Structural and MEP drawing review systems
How this page was researched: Reviewed against Helonic's 2026 drawing-analysis categories, RFI workflow, and product capabilities.
Last reviewed by Manas Gandhi · September 17, 2026