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ZH Construction (425) 555-0164 Check My Lot

How a Middle Housing Project Works

A duplex or townhome project has more moving parts than building one house: more utilities, more code requirements, sometimes a land division. Here is what happens at each stage, how long it usually takes and what you decide along the way.

STAGE 1Lot Reviewfree, about 2 business days
STAGE 2Feasibility Package2–4 weeks
STAGE 3Design and Engineering2–4 months
STAGE 4Permits3–6 months, varies by city
STAGE 5Construction7–14 months
STAGE 6Closeout
Architect drawing plans by hand with a pencil and rulerDesign
Building elevations and floor plan on a drawing sheetDrawings
Roof trusses and wall framing of a house under constructionConstruction
Stage 1

Lot Review

free, about 2 business days

We check jurisdiction, zoning, city tier, transit distance and the obvious site constraints from public maps.

You decidewhether to commission a feasibility package.
Stage 2

Feasibility Package

2–4 weeks

Utility availability, critical areas, trees, title review, two or three site plan options, cost range and pro forma for each.

You decidethe building type, unit count and whether you plan to sell, rent or both.
Stage 3

Design and Engineering

2–4 months

Architectural plans, civil engineering, structural design, energy code compliance and, where needed, geotechnical and arborist reports. A fixed-price or detailed construction estimate is prepared from the design development set.

You decidelayouts, exterior design, finish level and the construction contract.
Stage 4

Permits

3–6 months, varies by city

Pre-application meeting, building and site permits, demolition permit, right-of-way permit, utility applications and the unit lot subdivision application. We answer every round of city corrections.

You decidefinal selections, so ordering can start before permits issue.
Stage 5

Construction

7–14 months
PhaseWhat happens
Site prepAbatement, demolition, erosion control, excavation
Foundations & utilitiesFootings, walls, side sewer, storm system, water services
FramingFloors, walls, fire-rated party walls, roof
Rough-insPlumbing, electrical, mechanical, sprinklers where required; inspections
EnvelopeWindows, weather barrier, siding, roofing
InteriorsInsulation, drywall, cabinets, flooring, finishes
Site finishDriveway, walkways, landscaping, frontage work

You get a weekly written update with photos, schedule and budget status.

Stage 6

Closeout

Final inspections and certificates of occupancy, unit lot plat recording, as-built documents, appliance and system manuals, and a walk-through with each owner or your property manager. A warranty walk-through follows at the eleventh month.

07

How Payments Work

Design and permitting are billed by milestone. Construction is paid in progress draws tied to completed work, matching how construction lenders release funds.

Free lot review

Start at Stage 1 — It's Free

Send us the address. Within two business days you get a written lot review: how many units the city allows, what the site will cost to prepare, and which housing type makes the most sense for your goals.

Get a Lot Review Call (425) 555-0164