Case Study · AI-Assisted Construction & Design

Built Without
a Contractor

One inventor. One AI assistant. A basement office, a cat door, pocket doors, and a 15-foot custom built-in cabinet system — all planned, permitted, budgeted, and almost complete. No outside consultants. No architect. No quantity surveyor.

3
Distinct build phases completed
$0
Spent on consultants or designers
15′-4″
Custom built-in cabinet run
1
AI partner. All the leverage.
01

The Project

The inventor needed to convert a semi-finished basement into a fully functional home office — the primary place of business for their S-Corp. The brief covered three sub-projects that all had to be coordinated in sequence: a framed office enclosure with pocket doors, a dedicated cat access door in a short partition wall, and a full-width custom built-in storage system with integrated workspace and refrigerator pockets.

None of these were simple. The office wall ran into a load-bearing steel I-beam. The cat door had to fit within a constrained stud cavity. The cabinet system had to be 15 feet 4 inches wide, 89 inches tall, accommodate two refrigerators of different widths, and meet Michigan residential finish standards — all while staying under a drop ceiling that couldn't be touched.

The inventor had the skills to execute. What they needed was a co-pilot who could front-load the planning, surface every downstream problem before it became a rework, and produce real deliverables — floor plans, electrical diagrams, material lists, permit drawings, and a cabinet budget — that made each phase of construction purposeful rather than reactive.

"The AI didn't build anything. It made sure that when I picked up the first tool, I already knew exactly what I was about to do and why — and what would happen if I didn't."

02

What the AI Was Fed

The AI wasn't used as a generic chatbot. It was systematically loaded with real project context at each phase — codes, prices, dimensions, documents, and product catalogs. The output quality was a direct function of the quality of the inputs.

Codes & Compliance

  • Michigan Residential Code — framing, electrical, egress requirements
  • Commerce Township Building Department permit requirements document
  • Commerce Township FAQ — confirmed framing = structural modification = permit required
  • Michigan state homeowner-permit exemption law
  • NEC electrical code — 20A circuits, GFCI basement rules, daisy-chain wiring
  • Siemens QP breaker compatibility and AFCI/GFCI variant selection

Dimensions & Site Data

  • Exact wall lengths: 14ft, 12ft, 88.5in standalone wall
  • Ceiling height: 88 inches to drop ceiling grid
  • I-beam flange width: ~3 inches (estimated from visible column)
  • Support column diameter: 3 inches, 3-foot stub to column
  • Fridge dimensions: 34in and 30in wide, both 67in tall
  • Alcove depth: 42 inches · Menards delivered lumber quote: $1,200

Product & Price Data

  • IKEA SEKTION catalog PDF — Canton, MI store pricing, Apr 2026
  • IKEA delivery cost research — Canton store ~20mi from site
  • IKEA Family 10% promo deadline identified and flagged
  • Leviton and TOPELER outlet specification sheets
  • Pocket door hardware kit specs — RO and cavity framing requirements
  • ToughRock Basement Board vs. lightweight vs. standard drywall comparison

Documents Reviewed

  • Commerce Township permit application — all fields mapped for homeowner submission
  • BS&A online portal — system bug diagnosed, escalation email drafted to building dept.
  • IKEA SEKTION product pages uploaded as PDFs for live price extraction
  • Floor plan described verbally and rendered as dimensioned SVG for permit drawings
  • Electrical wall elevation produced as routing diagram for rough-in inspection
  • Cabinet elevation + IKEA budget compiled as single-page print deliverable
03

The Journey

The project unfolded across six phases. At each stage the AI held context from all previous sessions, flagged decisions that would affect future phases, and produced concrete outputs rather than generic advice.

Phase 1 — Compliance & Permitting
Michigan codes, Commerce Township permit, BS&A portal rescue
Before a single stud was purchased, the AI confirmed that Commerce Township requires a building permit for interior framing regardless of whether electrical or mechanical work is included — it searched commercetwp.com directly and cited the FAQ. It then mapped the entire permit application: REMODEL category, $1,200 project cost, zero new square footage, homeowner signature path.

When the BS&A online portal malfunctioned by blocking the homeowner-permit path and requiring a licensed contractor, the AI diagnosed the configuration error and drafted a professional email to the building department contact, referencing the correct state law exemption. The email was sent as-is. The building department responded and the permit was submitted through an alternate path.
Phase 2 — Framing Design
T-wall office, I-beam concealment, pocket doors, cat door geometry
The office enclosure required three walls forming a T-configuration around a structural steel I-beam and a 3-inch support column. The AI worked through every constraint: PT bottom plates on concrete, top plate attachment to the steel beam via beam clamps (no toe-nailing into steel), joist direction for top plate runs, stud count, and rough opening sizes for a 36-inch pocket door (74-inch RO — framed now, hardware later).

The cat door sub-project surfaced a genuine geometry conflict: an 8-inch outer-frame cat door in an 8.5-inch stud cavity left only 0.25 inches per side — not enough for the mounting flange. The AI walked through three options and recommended the standard 14.5-inch stud bay in the office wall as the correct location, a conclusion confirmed by the math and accepted by the inventor.

All decisions were visualized as dimensioned SVG floor plans — the T-wall assembly and the standalone 88.5-inch wall — exported as print-ready files for permit drawing submission.
Phase 3 — Electrical Planning
Two 20A circuits, 9 outlets, CAT6 ethernet routing diagram
With open stud bays, the electrical layout was designed before drywall. Two dedicated 20A circuits on a Siemens QF120A GFCI panel — one for office equipment, one for general use. Six 15A duplex outlets on the office face at 26-inch AFF, three 20A outlets on the non-office face at 18-inch AFF, two double-gang CAT6 ethernet ports at each side of the wall face, and a combo power+CAT6 plate at the non-office top center.

The AI produced a wall-elevation wiring diagram showing horizontal Romex routing at outlet height through drilled stud holes, pigtail method at each box, and CAT6 cable separation from Romex. When the inventor questioned how one wire could feed multiple boxes without splitting, the AI explained the continuous daisy-chain method from first principles — and corrected the diagram where it had been misleadingly drawn.
Phase 4 — Drywall & Soundproofing
ToughRock spec, Rockwool stack, STC targets for home office privacy
The AI recommended ToughRock Basement Board over both lightweight drywall and standard mold-resistant board — explaining the paperless back face advantage for below-grade humidity cycles. For soundproofing, it produced the full option stack with STC numbers: empty cavity (STC 33) → Rockwool Safe'n'Sound (STC 39) → add resilient channel (STC 48) → add Green Glue double drywall (STC 52). Recommendation: Rockwool mandatory throughout, Green Glue on the two primary office walls. The pocket door was correctly identified as the weakest acoustic link — door sweeps and perimeter acoustic seal tape specified at both doors.
Phase 5 — Cabinet Design
15ft-4in IKEA SEKTION built-in, fridge pockets, LED lighting
The inventor had a 10-foot cabinet space plus 64 inches for two refrigerators. The AI worked through the full layout: fridges left, four 30-inch SEKTION base and wall units filling the 120-inch cabinet run, 67-inch fridge pockets with 22 inches of cabinet above each, 18-inch workspace gap under the upper cabs, LED under-cabinet strip at 2700K, and a crown filler closing the 5-inch gap to the drop ceiling grid. Counter height lands at 36 inches AFF with toe kick, base cabinet, and countertop stacked.

Critical constraints surfaced in real time: IKEA's standard countertop is only 25.5 inches deep — the 42-inch alcove needs custom-cut butcher block. Upper cabinets anchor to wall studs only, never to the drop ceiling grid. The 10% IKEA Family promo had a deadline of April 21, 2026 — flagged explicitly in advance so the order could be timed.
Phase 6 — Budget & Order Prep
Store-ready lumber list, IKEA cart with verified pricing, single-page deliverable
With the IKEA catalog PDF in hand, the AI cross-referenced every cabinet unit against Canton, MI store pricing — flagging confirmed prices (✓) vs. estimates requiring verification, catching the SEKTION 15-inch-deep base cabinet trap (wrong for this 24-inch-deep application), and producing a full cost estimate: $2,200–$2,650 for the complete cabinet system with butcher block countertop. Separately, a store-ready Menards lumber list was produced: PT 2x4 quantities, standard stud count with pocket door cavity framing broken out, Tapcon anchor count, and hardware items — everything needed to order same-day.
04

Conversation Excerpts

These exchanges show the AI functioning as a domain-fluent advisor — holding constraints across sessions, catching errors before they became cuts, and producing outputs the inventor could act on immediately.

On whether the permit could be avoided

Inventor
Does Commerce Township MI need the permit? If I simplified the plan or didn't do electric or HVAC, could I avoid the permit?
AI
Yes, Commerce Township requires it — and no, you can't scope your way out of it. The Building Department FAQ states directly that all structural modifications require a building permit. Framing three new walls is a structural modification. That's the trigger — not the electrical or HVAC. Dropping those trades removes the need for separate mechanical and electrical permits, but the building permit for the framing is still required regardless. This is also a Michigan state-level mandate. The permit fee is likely $300–600. Pull it — it protects resale value and forces a rough-in inspection before you close the walls, which is actually useful.

On the cat door geometry problem

Inventor
The cat door is 8" wide and 7.5" tall. This should be fine.
AI
The height is fine. The width is the problem. 8-inch outer frame into an 8.5-inch stud cavity leaves 0.25 inches on each side. That's not enough for the mounting flange, screws, or any installation tolerance. Most cat door frames need at least 1 inch of drywall surface on each side to seat the flange. Options: find a narrower cat door with a 7.5-inch or smaller frame, shift the pocket door to redistribute the solid wall (note: this doesn't create more wall, only splits what exists), or put the cat door in the 14-foot solid office wall where you have a standard 14.5-inch stud cavity. Honest recommendation: the 14-foot wall. The math doesn't work in the short section without a redesign.

On how daisy-chain wiring actually works

Inventor
Why does the diagram show the wires going to the top of the wall each time? Wouldn't it be best to keep all the wires horizontally at the 26" outlet height?
AI
You're right — running horizontally at outlet height is cleaner, uses less wire, and is completely valid. The top-plate routing I drew is the typical approach when walls are already drywalled. Since your walls are open studs right now, horizontal at 26 inches is the better method. One rule: holes must be centered in the stud depth — 1.75 inches from either face on a 2x4. If the hole is within 1.25 inches of the stud face, install a steel nail plate. Centered holes need no nail plate. The corrected routing is: one Romex run from the panel, drop at the first bay, then drill through each stud horizontally and run continuously to each box in sequence.

On why the IKEA counter won't fit the alcove

Inventor
Should I order sheet rock now too?
AI
Not yet — three reasons. You cannot hang drywall until the framing inspection is signed off. The permit isn't issued yet, so if the inspector requests framing changes you'd need to rework before drywalling. And ToughRock Basement Board weighs 70 lbs a sheet — carrying it down stairs twice is unnecessary. Drywall is a same-day pickup item; buy it the week you're ready to hang. Your sheet count when ready: 16 sheets of half-inch ToughRock Basement Board, 4x8, hung vertically. Cut 8 inches off the bottom of each sheet. Single horizontal seam covered by base trim. Total material cost roughly $320–380.
05

The Deliverable

This is the kind of output that would normally require a designer visit, a separate quantity estimate, and multiple store trips to price items manually. It was produced in a single session from a product catalog PDF, a room description, and confirmed fridge dimensions. It is dimensioned to scale, priced against current Canton, MI store inventory, and flags confirmed prices vs. estimates requiring verification. It prints cleanly on one sheet and was used directly during the ordering process.

Cabinet Elevation + Cost Budget · AI-Generated · Apr 2026 Single-session deliverable
BASEMENT BUILT-IN ELEVATION | 15'-4" TOTAL | FRIDGES LEFT | 10ft CABINETS RIGHT | 67" FRIDGE POCKET | SHAKER / WHITE Scale approx 1px = 0.25" | Total width 184" = 760px | Height 89" = 267px | 3675 S Commerce Rd, Commerce Township MI FREEZER REFRIGERATOR 34"W x 67"H pocket FREEZER REFRIGERATOR 30"W x 67"H pocket upper cab above fridge 34"W x 22"H upper cab above fridge 30"W x 22"H crown / filler ~5" upper cabinets 30"H x 120"W (4x SEKTION wall cab 30x15x30) shaker doors — white LED under-cabinet strip — 2700K warm white W O R K S P A C E 18" clearance counter 36"AFF base cabinets 30"H x 120"W (4x SEKTION base frame 30x24x30 + doors) shaker doors — white 89" 30" 18" 36" 67" pocket 22" 34" 30" 120" (10ft cabinet section) 184" TOTAL (15'-4") | 64" fridges + 120" cabinets filler LED strip refrigerator SEKTION cabinet countertop 36" toe kick IKEA SEKTION COST ESTIMATE | Canton, MI Store | Prices from IKEA PDF Apr 2026 ITEM SIZE QTY UNIT PRICE SUBTOTAL ABOVE-FRIDGE CABINETS Top cab f fridge/freezer w 2 doors (Vallstena white) 36x24x20" 1 $153.00 ✓ $153.00 Top cab f fridge/freezer w 2 doors (Vallstena white) 30x24x20" est. 1 ~$128.00 est. ~$128.00 UPPER WALL CABINETS — 120" RUN (Path B: complete units) Wall cabinet w/ 2 doors, Enkoping shaker white 30x15x30" 4 $208.00 ✓ $832.00 BASE CABINETS — 120" RUN (frames + separate shaker fronts) Base cabinet frame, white (30" version est. from $97 shown for 36") 30x24x30" est. 4 ~$80.00 est. ~$320.00 Enkoping shaker door fronts (2 per base unit, verify on doors page) 30x30" est. 8 ~$70.00 est. ~$560.00 OPTIONAL — DRAWER UPGRADE (swap 1-2 base units) Base cab w/ 3 drawers (MAXIMERA) — swap 1 base unit for drawer access 30x24x30" 0–2 $315.00 ✓ +$0–630 ACCESSORIES SEKTION suspension rails for wall cabs 4 ~$10.00 est. ~$40.00 Cabinet legs / UTRUSTA ~12 ~$5.00 est. ~$60.00 Toe kick strip 10ft ~$20.00 est. ~$20.00 Filler / scribe strips (wall ends) 2 ~$15.00 est. ~$30.00 COUNTERTOP (non-IKEA — 42" deep custom required) Butcher block custom cut 42"D x 120"W (lumber yard) 1 ~$200 est. ~$200.00 OR: Quartz remnant (stone yard, varies widely) 1 $800–1,800 alt. option LED LIGHTING + DELIVERY LED under-cabinet strip 2700K (Govee or Kasa, non-IKEA) 1 kit ~$50.00 ~$50.00 IKEA large item delivery — Commerce Twp to Canton MI (~20 mi) 1 $29–$49 ~$39.00 SUBTOTAL BEFORE PROMO DISCOUNT Low est. ~$2,432 IKEA FAMILY 10% OFF KITCHENS $3,000+ (valid to Apr 21, 2026) if over $3k -$243 to -$350 ESTIMATED TOTAL RANGE (butcher block counter) $2,200 – $2,650 ✓ = confirmed price from IKEA PDF (Canton MI, Apr 2026) | est. = estimated — verify at ikea.com before ordering | Quartz counter adds $600–$1,600 to total IKEA SEKTION base cabinets are 24"D — leaves 18" of rear alcove depth unused (use for utility runs, shelving, or closed-off storage behind toe kick) Upper cabs attach to wall studs only — NEVER to drop ceiling grid | Shaker door: Enkoping or Axstad white from IKEA doors page | Sign up for free IKEA Family before checkout Delivery: Standard doorstep $29 start (non-Family) — IKEA Family members save extra | Confirm exact delivery cost in cart before checkout | Consider Click & Collect to save $29–$49 Chair rail at ~34" AFF: white below, light blue/gray above | All trim white | Refrigerators remain — pockets open at floor, no base cabinet under fridges Prepared Apr 2026 | Prices subject to change | Verify all estimates at ikea.com before purchasing | Canton IKEA: (888) 888-4532
Cabinet elevation + IKEA SEKTION cost estimate · 15'-4" total (184") · 89" height · two fridge pockets at 67" with 22" above-fridge cabs · four 30" base units + four 30" wall units · shaker/white · Canton MI pricing Apr 2026 · ✓ = confirmed from IKEA PDF · Total range $2,200–$2,650 with butcher block countertop

This single document replaced a kitchen designer consultation ($200–500), a separate quantity estimate, and several store trips. The IKEA Family promo deadline was flagged in the same session, giving the inventor a concrete ordering window to hit.

06

Where It Stands

Three distinct build phases that would typically require multiple professionals, multiple site visits, and weeks of coordination are nearly complete — driven by one inventor with a clear vision and an AI that handled the cognitive overhead.

🏢
Basement Home Office
T-wall framing complete. Pocket door hung. Drywall up. Electrical rough-in ready for inspection. Two dedicated 20A circuits, six outlets, CAT6 ethernet drops. Rockwool soundproofing throughout. ToughRock Basement Board. Dedicated S-Corp primary place of business.
Almost complete
🐱
Cat Door & Access Wall
88.5-inch standalone wall with pocket door framed and hung. Cat door location resolved — geometry conflict caught before framing and moved to a standard stud bay. Pocket cavity correctly sized. All PT bottom plates anchored to slab. Doors operational.
Almost complete
🪵
Built-In Cabinet System
15'-4" IKEA SEKTION layout finalized. Fridge pockets at 67" with 22" above-fridge cabinets. Budget deliverable produced and used for ordering. IKEA Family promo deadline tracked. Butcher block countertop sourced. Cabinet order in progress.
Ordering stage

What this saved

No architect. No permit expediter. No kitchen designer. No electrical consultant. No quantity surveyor. The AI covered every one of those functions — not by replacing professional judgment, but by giving the inventor enough domain fluency to make every decision themselves, correctly, the first time. Every one of these would have been a paid engagement in a conventional workflow.

The permit email was drafted and sent without a lawyer. The electrical layout was designed without an electrician. The cabinet budget was produced without a designer. The framing plan was drawn without an architect.

What the AI couldn't do — the honest list

  • It never held a tape measure. Every critical dimension came from the inventor measuring on-site.
  • It couldn't see the I-beam flange through the drop ceiling — the inventor estimated from the visible column and the AI flagged the risk clearly.
  • It made occasional label-swap errors when reading multi-dimension drawings — caught by cross-checking against the physical space before any cuts were made.
  • It couldn't operate the BS&A portal, SolidWorks, or the Menards ordering system. The inventor executed all of that.
  • It cannot pull a permit, energize a breaker, or apply finish. Licensed trades and inspectors own those moments — and should.
Next Steps

Your Project.
Our Toolkit.

ChessTrees Labs works with hardware inventors and builders to deploy AI across the full project lifecycle — from code research and permit navigation through CAD review, material budgeting, and construction sequencing. If you're building something and want a co-pilot who knows the difference between a framing permit and an electrical permit, a Tapcon and a Hilti, and a SEKTION and a PAX — reach out.

Hire ChessTrees Labs

"The inventors who move fastest aren't the ones who know the most — they're the ones who know exactly what to ask, and who to ask it to. AI changes what's possible to ask. ChessTrees changes what you can build."

ChessTrees Labs · Precision Engineering & Product Development · chesstrees.com