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Construction Document Process: Step-by-Step LA (2026)

Last Updated: May 10, 2026 · Reviewed by Netanel Presman, CSLB #1105249

Construction Documents (CDs) are the build-ready plans — the drawings, specifications, and schedules a contractor uses to bid, permit, and build. Most LA construction problems trace back to weak CDs: missing details, contradicting sheets, vague specifications, incomplete schedules. Strong CDs eliminate ambiguity. Weak CDs create $50-$300K of change orders during build. This page maps the complete CD process and identifies the standards that separate plan-check-ready CDs from junk.

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Quick Answer · Total Duration: 10-16 weeks (custom home) or 6-12 weeks (major renovation)

Construction Documents (CDs) take 10-16 weeks for a custom home, 6-12 weeks for a major renovation. Output: full plan set, detail sheets, specifications, schedules (door/window/finish), engineering. CDs must be 95%+ complete to submit for LADBS plan-check + bid for fixed-price contracts. Weak CDs are the #1 source of construction change orders.

Detailed Timeline — Week-by-Week / Phase-by-Phase

Below is the calendar-locked timeline NPLD uses on real LA construction projects. Each row covers the period, the phase, activities, NPLD's checkpoint to verify completion, and one common mistake we see other LA contractors make.

Period	Phase	Activities	NPLD Checkpoint	What Most LA Contractors Get Wrong
Week 1-2	DD Approval + CD Kickoff	DD set approved by homeowner. CD scope-of-work signed. Architect + structural + MEP engineers fully engaged.	CD kickoff meeting held.	Modifying DD during CDs — restarts portions of the design.
Week 3-6	Full Plan Set Draft	Architectural sheets at 1/4" scale with full dimensions + notes. Foundation plan with structural integration. Framing plan with member sizes + connections. Electrical, plumbing, mechanical plans with riser diagrams.	Plan set 50% complete.	Drafting without coordinating between disciplines — sheets contradict.
Week 7-10	Detail Sheets + Sections	Wall sections (1" or 1.5" scale), door + window jamb details, kitchen + bath elevations, stair details, roof framing details, foundation details, waterproofing details.	Detail sheets complete.	Skipping details — contractor fills in during build, change orders ensue.
Week 11-12	Specifications + Schedules	Specifications: written descriptions of every material + workmanship standard. Schedules: door schedule, window schedule, finish schedule, hardware schedule.	Specs + schedules complete.	Vague specifications ("premium fixtures") — installer picks cheap end of range.
Week 13-14	Engineering Integration + T24/CalGreen	Structural engineering integrated into plan set (typically separate stamped sheets). MEP engineering integrated. T24 + CalGreen + stormwater plans complete.	All engineering integrated.	Engineering as separate document — plan-checker has to cross-reference.
Week 15	Coordination Check + Constructability Review	GC reviews CDs for constructability ("can we actually build this?"). Architect resolves conflicts between architectural + engineering. Spec book reviewed.	Coordination resolved + constructability confirmed.	Skipping constructability review — RFIs during build cost weeks.
Week 16	Final CD Set + Plan-Check Submittal	Plan set finalized. All stamps + signatures applied. Submitted to LADBS for plan-check.	CDs submitted to LADBS.	Submitting at 85% — plan-check returns multi-cycle corrections.

Key Milestones + Netanel's Notes

Specifications Are Where Quality Lives or Dies

Specifications are the written companion to drawings: they describe every material (paint brand + line + finish + sheen, hardware brand + model + finish, tile manufacturer + line + color + grout, etc.) and every workmanship standard ("all caulk lines shall be tooled with consistent profile and shall not exceed 1/8" wide," "all paint shall be applied in 3 coats: primer + 2 finish, sand between coats 1 and 2"). Vague specs ("premium fixtures") give installers permission to install the cheap end of "premium." Detailed specs lock quality. NPLD's CDs include 30-80 pages of specifications.

"Specs are boring. Specs are also the difference between a great-looking home and a junk-looking home with the same drawings." — Netanel Presman, Owner + GC, NP Line Design

Coordination — Where Most CDs Fail

Architectural drawings show a beam location. Structural engineer's drawings show the same beam at a different location. Electrical plan puts a recessed light right where the beam is. MEP routing conflicts with structural shear walls. These are coordination failures — and they cause RFIs (Requests for Information) during build, each of which is a 3-7 day delay. NPLD's coordination check is a 1-2 week pass where every sheet is compared against every other. Hidden conflicts surface in the office, not on the jobsite.

"RFIs are the contractor saying "your plans don't work." Good CDs produce 5-10 RFIs per project. Bad ones produce 50-100. Pay for coordination." — Netanel Presman, Owner + GC, NP Line Design

What Most LA Contractors Get Wrong

These are the patterns we see again and again when LA homeowners come to us after a failed project with another contractor. Each one is preventable — and NPLD prevents them.

⚠️ The 'Sketchy CDs to Save Money' Trap

Some clients shop architects on fee + pick the cheapest. Cheap architects produce thin CDs (40-60 sheets when a custom home needs 80-120). The 'savings' on CDs become $100-$400K of change orders + RFIs during build.

NPLD's Solution:

NPLD partners with architects whose CD sets are deep + coordinated. Architecture fees on a custom home: $200-$500K. CDs portion: $80-$200K. Worth every dollar in build-phase savings.

⚠️ The 'Architect Doesn't Coordinate with GC' Disconnect

Architectural firms that don't engage with the GC during CDs produce plans that look good but can't be built cost-effectively (or at all). GC inherits the mess + change-orders the homeowner during build.

NPLD's Solution:

NPLD's design-build process engages the GC during DD + CDs. Constructability is checked on every detail. Material substitutions are flagged early. Cost feedback is real-time.

How NPLD Delivers This — 7 Steps

Step 1 — DD approval + CD kickoffDD set approved. CD scope agreed.
Step 2 — Full plan set draftArchitectural, structural, MEP plans at 1/4" scale.
Step 3 — Detail sheets + sectionsWall sections, jamb details, kitchen/bath elevations.
Step 4 — Specifications + schedulesMaterial specs + door/window/finish schedules.
Step 5 — Engineering integration + T24/CalGreenAll engineering + compliance integrated.
Step 6 — Coordination check + constructability reviewGC review + architect resolution.
Step 7 — Final CD set + LADBS submittal95%+ complete CDs submitted to LADBS plan-check.

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Tell us about your construction document process project. We'll schedule a free in-home consultation within 5 business days across LA County, give you a fixed-price proposal within 48 hours of the visit, and you decide if NP Line Design is the right fit. CSLB License #1105249.

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Frequently Asked Questions

What are Construction Documents?

The build-ready plans: drawings (architectural, structural, MEP), specifications (written material descriptions + workmanship standards), schedules (door, window, finish, hardware). CDs are what a contractor uses to bid, permit, and build.

How long do Construction Documents take?

Custom home: 10-16 weeks. Major renovation: 6-12 weeks. Minor renovation: 3-6 weeks. Larger or more complex projects take longer. Coordination + constructability review can add 1-2 weeks.

How much do Construction Documents cost?

CDs typically 45-55% of total architectural fees. For a custom home: $80-$200K. Major renovation: $25-$60K. Minor renovation: $8-$20K. Cheap CDs aren't a savings — they become change orders.

What's in a CD set?

Site plan, floor plans (existing + proposed), elevations, sections, foundation plan, framing plan, electrical plan, plumbing plan, mechanical plan, roof plan, kitchen + bath elevations, wall sections, jamb details, schedules (door, window, finish, hardware), specifications, T24 forms, CalGreen forms, stormwater plan. Custom home: typically 80-120 sheets.

What's the difference between CDs and shop drawings?

CDs are produced by the architect/engineer team for permit + bid. Shop drawings are produced by subcontractors during construction (e.g., cabinet shop produces detailed shop drawings of every cabinet for fabrication). Both are required for a quality build.

Can I bid construction off DD plans?

Bidding off DD produces estimate ranges ±10-15% (good for budgeting). Fixed-price contracts require CDs at 95%+ to lock the number ±2-5%. Bidding fixed-price off DD is a recipe for change orders.

Does NPLD coordinate with my architect on CDs?

Yes — NPLD reviews architectural CDs during the coordination + constructability check phase (Week 15 of typical CD timeline). We flag conflicts, suggest substitutions, confirm we can build it within budget. Most efficient: design-build where NPLD is engaged from DD onward.

Design Development Process LADBS Plan-Check Process Custom Home Build Timeline Architectural Design in LA Free Design + Construction Consultation

Netanel Presman

Founder · CSLB #1105249 · 200+ Projects

“Standard LADBS plan check for an LA home renovation is 8-16 weeks. Expedited review costs $500-$2,000 extra and runs 10-20 business days. Hillside, coastal, VHFHSZ, and historic-overlay properties add 4-12 more weeks. The single most common cause of plan-check delay we see is incomplete soil reports — LADBS has been requiring them for almost any foundation work since 2024, and most submittals still miss it.”

Pro Tip

Construction documents (the permit submittal set) cost $3K-$15K to produce for typical LA scope. The 5 sections most often missing or incomplete: Title 24 energy calcs (CF1R), structural calcs for any load-bearing scope, MEP coordination drawings, site survey with HOA-bylaws-required setbacks, and signed-architect cover sheet. Submittals missing any one get day-one rejected. We assemble a checklist-driven submittal package — same as a Boeing pre-flight checklist. Project after project, the package clears in 1-2 correction cycles vs industry 3-5.

Author & Contractor of Record

Netanel Presman

Founder & Licensed General Contractor · Since 2016

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Page last updated: May 11, 2026Published by NP Line Design Inc

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