Engineers who get plans approved
We design permit-ready MEP plan sets for architects, contractors, and owners across the US — fast, fixed-fee, and backed by a QC system built from every city comment we have ever received.
Fixed quotes in 24 business hours. First sets in as few as 5 working days. Dates tracked on every project.
Lump-sum fees agreed before we start. Add-ons priced before the work, never after.
City plan-check comments answered until permit issuance — included. Approved drawings are the deliverable, not just submitted ones.
We started as the production engine behind other engineering firms — the team that architecture and MEP firms across the country trusted to design, calculate, and document their projects under their own brand. Years of that work taught us something most design firms never systematize: why plans get rejected.
Every city correction letter that came back, we logged. That discipline became our core asset — a database built from every city correction letter across 200+ projects in 40+ jurisdictions, organized by city and turned into the checklists our engineers design against from day one.
Today we serve clients directly as Zesterex Engineering Alliant, with in-house PE stamping in Texas and California and a licensed partner network covering the rest of the country.
One integrated team designs your project: MEP as the core, with architectural and structural support in the same coordinated set when needed. Texas and California projects are stamped by our own licensed engineers; other states go through locally licensed partner PEs we have worked with for years — we coordinate everything, so the process looks identical to you.
Much of our work is white-label for other engineering and architecture firms; you will see those references anonymized by role, because we keep our partners’ confidentiality even in our marketing.
Every city comment we have ever received becomes a checklist item. That is why our sets get through plan check with fewer rounds — and why we can put “comments included until permit” in writing.
Cross-discipline coordination errors are the most common rejection cause we see. MEP, architectural support, and structural support come from one team on one background — so they cannot contradict each other.
The free calculators on this site are the same ones our engineers use. The outputs are plan-ready. Try the calculators
Recent completed projects
SS-109
Single-Family Residence — Full Package
SS-102
A-2 Change of Occupancy — Golf-Simulator Taproom
SS-103
Coastal Custom Home
"I enjoy working with Sabrul immensely and have continued working with him on many projects since. He is a trusted resource and supported all our projects with everything."
"Sabrul is a great problem solver. Very easy to work with. Takes the time to understand our project's needs and issues, and researches alternative solutions to problems."
"I hired Sabrul to assist with a project that lasted a couple of years. A true professional — his work ethic is beyond what anyone on our team expected. I highly recommend him."
"Sabrul did an exceptional job on our Bill of Quantities project. His accuracy, attention to detail, and expertise in cost estimation were truly impressive — clear communication, met deadlines, and highly responsive. Highly recommended."
Complete MEP permit set built to get approved.
Every mechanical, electrical, plumbing, and fire sheet your reviewer needs — a fixed quote in 24 business hours, first sets in as few as 5 working days, and city comments answered until your permit is issued.