HS

HomeSystems MEP modeling + permit-ready exports

HomeSystems platform

From floor plan to permit-ready MEP — in hours, not days.

Built for custom residential architects, builders, and trade contractors who need coordinated HVAC, electrical, and plumbing deliverables fast.

Room-by-room outputs Permit packet exports Clear scope assumptions Coordinated trades

Dashboard preview with load metrics — Live load dashboards.

Permit packet preview layout — Permit-ready packet exports.

Single source model diagram — Single source model geometry.

Architect reviewing systems design — Architect-first coordination checks.

Contractor using construction software — Trade-ready scopes for field teams.

Who it’s for

Purpose-built for teams delivering high-performance custom homes.

Architects

Validate loads early and ship client-ready narratives without coordination drift.

Early load validation Client-ready narratives Updated assumptions log

Key outputs

Floor-by-floor load summaries
Permit packet narratives
RFI-ready scope notes

Design workflow

Trace plans once, reuse across trades
Coordinate assemblies with consultants
Share revisions with clear diffs

Builders

Lock material takeoffs and keep rough/trim scopes aligned across trades.

Material takeoffs Trade coordination Revision tracking

Key outputs

Bid-ready BOM snapshots
Trade-ready schedules
Scope assumptions log

Project control

Centralized plan changes
Aligned rough-in timelines
Clear deliverable milestones

Contractors

Deliver code-aware sizing and fewer callbacks with coordinated load outputs.

Code-aware sizing Room-by-room loads Quick revisions

Key outputs

Equipment sizing reports
Ventilation + moisture checks
Service load summaries

Delivery confidence

Consistent assumptions per room
Fewer site conflicts
Export-ready documentation

One workflow from plan to permit

HomeSystems centralizes geometry, assumptions, and calculations so every export matches the latest plan set.

Capture once

Trace floor plans, define assemblies, and keep room data structured.

Coordinate fast

Sync HVAC, electrical, hydronic, and plumbing outputs in one model.

Export confidently

Generate permit packets, BOMs, and summaries with clear assumptions.

Built for high-performance residential teams

Operational clarity and client-ready deliverables are baked in.

“We can issue HVAC and electrical loads together without waiting on three separate tools.”

Jenna Li

Design Director, Northline Architects

“The plan-to-permit flow keeps every revision aligned with the latest sheet set.”

Marco Ruiz

Owner, Ruiz Custom Builders

“Room-by-room load summaries cut our callbacks by making assumptions explicit.”

Tara Nguyen

HVAC Lead, Alpine Mechanical

Visualize the build

Use plan-based context with clean technical framing across every deliverable.

Main floor plan sheet with room layout — Main floor plan context for fast room modeling.

Basement plan sheet showing utilities and rooms — Basement utilities and mechanical zones in one view.

Bonus space plan sheet with open areas — Bonus spaces captured with consistent assemblies.

Pricing

Start with a 14-day free trial. No credit card required. Cancel anytime.

Starter

Explore and set up your projects.

$0/mo

Home Setup tool access
ZIP code climate lookup
Floor plan upload + tracing
Room geometry modeling
1 project export/month

Pro

Full access to every planning tool.

$39/mo

or $312/year (save 20%)

All planning tools included
Thermal Load calculations
Electrical panel planning
Plumbing BOM generation
Network + AV planning
Unlimited PDF exports

Most popular

Team

Collaborate with your team.

$99/mo

or $792/year (save 20%)

Everything in Pro
3 team member seats
Shared project library
API access
Priority support

Only need one project? Purchase a single project license for $99 (one-time).

Compare all plans and features

Starter (Free)

$0/mo

Project creation + metadata
ZIP code climate lookup
Assembly library management
Floor plan upload + calibration
Room tracing + naming
1 export/month

Pro

$39/mo or $312/year

All Starter features
Thermal Load calculations
Electrical panel planning
Plumbing BOM generation
Network + AV planning
Unlimited PDF exports
Hourly load profiles
Equipment sizing

Team

$99/mo or $792/year

All Pro features
3 team member seats
Shared project library
Project revision history
API access
Priority support

Single Project

$99 one-time

All tools for one project
License never expires
Perfect for occasional use
Pass cost to client

5-Project Pack

$399 one-time Save $96

All tools for 5 projects
Licenses never expire
Use across any projects
Best for contractors

Need the Thermal Loss Calculator right now?

Jump straight into the existing calculator workspace. Login required for saved projects.

Bring your next project into HomeSystems.

Start free or book a demo to see the permit packet workflow live.

Current Plan

Free

Home Setup Only

Tool Access

Tools available with your current plan

✓ Home Setup Included

✗ Thermal Load Pro

✗ Electrical Pro

✗ Plumbing Pro

✗ Network + AV Pro

Account

Email Not signed in

Promo Code

Have a promo code? Enter it below.

Company Branding

PDF Reports

This information appears on cover pages, headers, and footers of exported PDF reports.

📷 Upload Logo

PNG, JPG, or SVG. Max 2MB. Recommended: 400×100px

Company Name

Phone Email

Website

Address

City State ZIP

License Number

Tagline / Certifications

👤 - User

Home Systems

Project Settings

Enter baseline project and climate assumptions before defining assemblies or rooms.

Project Basics

Project Name

Folder

ZIP Code

Winter Solar Reduction

Climate Design

	Winter	Summer
Design Temp (°F)
Design RH (%)
Degree Days

Frost Depth (ft)

Equipment & Costs

Heat Pump Performance

Winter COP

Summer COP

Electricity Price ($/kWh)

Ventilation & Moisture

Heat/Moisture Recovery

Sensible Recovery (%)

ERV Latent Eff. (%)

Indoor RH Target (%)

Infiltration (ACH50)

Dehumidifier Safety

Quality Checks

Outlier Threshold (BTU/h·sq ft)

Assemblies Library

Create reusable assemblies, then assign them to rooms and surfaces.

New Wall Assembly

Name R-Value Wall Height (ft)

Wall Assemblies

No wall assemblies yet. Add one using the form.

Preview

Select a wall assembly to preview

New Foundation Wall

Name R-Value Wall Height (ft) Exposed Height (ft) Insulation Depth (ft)

Foundation Walls

No foundation walls yet. Add one using the form.

New Window Assembly

Name U-Value SHGC Window Height (ft)

Window Assemblies

No window assemblies yet. Add one using the form.

New Door Assembly

Name U-Value Door Height (ft)

Door Assemblies

No door assemblies yet. Add one using the form.

New Floor Assembly

Name R-Value

Floor Assemblies

No floor assemblies yet. Add one using the form.

New Ceiling/Roof Assembly

Name R-Value Ceiling Height (ft)

Ceiling/Roof Assemblies

No ceiling assemblies yet. Add one using the form.

Plan Sheets

Upload floor plans, trace assemblies, and assign rooms.

Name Structure Group Upload Floor Plan Show grid overlay

Plan

Thermal Load Calculations

Configure heating and cooling sources, view load breakdowns, and size equipment.

System Configuration

	Heating	Cooling
Source
Distribution

Calculation Results

Run calculations to see results.

Calculation Assumptions

Loading calculation methodology...

Room Details

Select a room to review loads, then tune assemblies and setpoints.

Room Name Room Type Exterior Floor Assembly Exterior Ceiling Assembly Roof Pitch (rise/run) Winter Setpoint (°F) Summer Setpoint (°F) Ventilation CFM Occupant Moisture (pints/day)

Window Shading Diagrams

Room Load Summary

Room Window & Door Schedule

Whole Project Summary

Review totals after assembling plans and room settings.

Electrical Planning

Place fixtures and outlets, design circuits, and generate panel plans.

Fixture Library

Select fixtures to place on the floor plan.

Circuit Summary

Add fixtures to see circuit summary.

Panel Configuration

Main Breaker

Service Voltage

Load Diversity Calculation (NEC 220)

Generate panel plan to see load calculations.

Wire Estimates

Generate panel plan to see wire requirements.

NEC Compliance Notes

Receptacle Spacing (NEC 210.52)

No point along wall space more than 6 ft from an outlet
Receptacles required every 12 ft along walls
Kitchen: Two or more 20A small appliance circuits required
Bathroom: At least one 20A circuit, receptacle within 3 ft of basin
Garage: At least one receptacle required
Outdoor: Front and back receptacles required

GFCI Protection (NEC 210.8)

Kitchen countertop receptacles
Bathroom receptacles
Garage receptacles
Outdoor receptacles
Basement/crawlspace receptacles
Laundry area receptacles

AFCI Protection (NEC 210.12)

All bedroom circuits
Living rooms, family rooms, dining rooms
Parlors, libraries, dens, sunrooms
Recreation rooms, closets, hallways

Wire Sizing (NEC 310)

Circuit	Copper	Aluminum
15A 120V	14 AWG	12 AWG
20A 120V	12 AWG	10 AWG
30A 240V	10 AWG	8 AWG
40A 240V	8 AWG	6 AWG
50A 240V	6 AWG	4 AWG

Bill of Materials

Generate panel plan to see BOM.

Plumbing Planning

Place plumbing fixtures and design supply/drain layouts.

Fixture Library

Select fixtures to place on the floor plan.

Supply Sizing Analysis

Add fixtures to see supply line sizing recommendations.

Hot Water Analysis

Add fixtures to see hot water loss and wait time analysis.

System Configuration

Supply System Type

Hot Water Loop-Back Recirculating Pump

Fixture Summary

Add fixtures to see summary.

Bill of Materials

Add fixtures to generate BOM.

Network + AV Planning

Place network devices, speakers, and TVs. Define zones and routing.

Device Library

Select devices to place on the floor plan.

Speaker Zones

Add speakers to configure zones.

TV Control Mode

Distribution Type

Each TV controlled independently via dedicated streaming device.

Network Configuration

Rack Location

Average Cable Run (ft)

Rack Requirements

Add devices to calculate rack unit requirements.

Cable Estimates

Add devices to see cable estimates.

Standards & Best Practices

Cabling Standards (TIA-568)

Cat6 minimum for all data runs
Maximum cable length 100m (328ft) total
Maintain bend radius minimum 4x cable diameter
Use CL2/CL3 rated cable in walls
All runs should be tested and certified

Labeling (TIA-606-C)

Label all cables at both ends
Use consistent naming scheme
Document all runs in cable schedule

Audio (CEA-863-A)

16 AWG minimum for speaker wire under 50ft
14 AWG for runs 50-80ft
12 AWG for runs over 80ft
Use in-wall rated (CL2/CL3) speaker wire

Rack Planning

Equipment	Typical RU
24-Port Switch	1 RU
Patch Panel	1-2 RU
UPS	2 RU
Zone Amplifier	2 RU
A/V Receiver	3 RU
NVR (Security)	2 RU

Add 2 RU cable management per 6 RU equipment + 20% headroom

Bill of Materials

Add devices to generate BOM.