Custom Sunroom Design-Build

Design and build custom sunrooms as permanent home extensions, from plans to final finish.

A newly built glass conservatory attached to the back of a family home.

Startup cost$15k to $60k

Monthly revenue$12k to $60k

Time needed35+ h/week

First incomeMonths

$15k-60k
Full-time
Out and about
Licence or permit needed

Estimates for a small start in the US, not guarantees.

Official data

135,337 US businesses with employees in this field, +1.5% in a year

NAICS 236118 “Residential remodelers”. Source: U.S. Census Bureau, County Business Patterns 2023.

What it is

You design and construct custom sunrooms and glass-roofed extensions that match the home, managing drawings, permits, foundation, framing, glazing and finishing with a small crew or trusted subcontractors.

Your first three steps

Confirm the contractor license requirements in your state and get licensed, bonded and insured as needed
Build relationships with an architect or draftsperson, a glazing supplier and reliable electrical and foundation subcontractors
Create a portfolio with a first project or two and market through local home shows, online reviews and realtor contacts

Who pays

Homeowners who want year-round living space and are ready to invest in a larger home improvement project.

How it makes money

Project price per build, usually paid in stages (deposit, milestones, final payment), with margin on materials and labor.

Skills that help

Construction and project management
Basic design and drawing, or working with a designer or architect
Estimating costs and selling to homeowners

Watch out for

Contractor licensing and any bonding requirements vary by state, check your state licensing board
Permits, energy code and structural requirements for additions, check with your local building department
General liability insurance, workers' compensation once you hire, and possibly builder's risk coverage
Cash flow: materials costs come before stage payments, so plan your deposit terms
Written contracts are important to cover change orders and weather delays, consider legal review

🔒 Full research report for US

Real cost breakdown with current prices, licences and registration checklist, local competition, pricing, break-even and a 30-day launch plan, with sources.

Coming soon

Questions people ask

How much does it cost to start a custom sunroom building business?

Startup costs are typically around $15,000 to $60,000, depending on your tools, vehicle, insurance, design support, and the materials you must fund before stage payments arrive. Your deposit terms affect cash flow.

How much can a custom sunroom builder earn?

Monthly revenue is typically around $12,000 to $60,000, depending on how many projects you complete, their size and finish, your pricing, and whether you use a crew or subcontractors. These are estimates only.

What licenses and permits should I check to build sunrooms?

Check your state licensing board, as contractor licensing and any bonding requirements vary by state. Also check permits, energy code, and structural requirements with your local building department, and look into insurance and written contracts for change orders.