FAMILY-OWNED · CASTLE ROCK, CO
WE BUILT HOSPITALS.
NOW WE FIX YOUR HOUSE.
23 years of commercial plumbing and HVAC — hospitals, water plants, airports — brought to residential work in Denver, Littleton, Castle Rock and Colorado Springs. Flat rates. No surprises.
- Licensed & insured
- Flat-rate quotes
- Same-day slots most days
WHAT DO YOU NEED DONE?
Four lines of work, one crew, one standard. Pick the closest fit — we'll sort the rest on the phone.
Plumbing
Drains, water heaters, fixtures, re-pipes and the gas lines nobody else wants to touch.
7 SERVICESHVAC
Air conditioning, heating and furnace work — sized for Colorado, not for a rule of thumb.
3 SERVICESRemodels
Bathrooms, kitchens, basements, gas upgrades and commercial tenant finish.
5 SERVICESNew Construction
Custom homes and ground-up commercial, from underground through trim.
2 SERVICES
WHY ALLEN & SONS
Clayton Allen spent 23 years on Colorado's hospitals, water treatment plants, airports, hotels and high-rises. In 2020 he pointed that standard at houses. Same code knowledge, same inspection discipline — on your water heater.
Need someone today?
Leaks, no heat, no hot water — we hold same-day slots. Calling beats the form every time.
CALL (303) 957-6200Commercial background
23 years on hospitals, water plants, airports and high-rises. Houses are the easy part.
Flat rates, quoted first
You get a number before we start. It does not change because the job ran long.
Licensed and insured
Permitted where permits are required. We do not skip the inspection to save an afternoon.
Family-owned
Founded in 2020. The owner is on job sites, not behind a call center.
THE CREW THAT SHOWS UP
No dispatch roulette. These are the people who will be standing in your basement.
Clayton Allen
Founder & Owner
WHERE WE WORK
Based in Castle Rock, up and down the I-25 corridor. If you're between these, call and ask — we usually can.
QUESTIONS PEOPLE ASK FIRST
What areas does Allen & Sons serve?
Allen & Sons serves Denver, Littleton, Castle Rock and Colorado Springs, plus most of the I-25 corridor in between. The shop is at 834 South Perry St in Castle Rock, which is the fastest-response area.
How does your pricing work?
Flat rate. We look at the job, give you a number, and that number is what you pay. There is no hourly meter and no line items you did not agree to. The quote comes before anyone opens a toolbox.
How fast can you get here?
We hold same-day slots for emergencies most days. Non-urgent work is usually scheduled within 48 hours. For an active leak or no heat in winter, call rather than using the booking form — the phone is faster.
Are you licensed and insured?
Yes. Allen & Sons is licensed and insured in Colorado, and we pull permits ourselves on any job where a permit is required rather than skipping the inspection.
Do you do both plumbing and HVAC?
Yes. Allen & Sons covers residential plumbing, heating and air conditioning, remodel rough-in, and ground-up new construction — one crew across all four, rather than subcontracting the mechanical work out.
Who owns Allen & Sons?
Clayton Allen founded the company in 2020 after 23 years of commercial plumbing and mechanical work on Colorado hospitals, water treatment plants, airports, hotels and high-rises. It is family-owned and he is on job sites.
STILL SCROLLING? THE PIPE ISN'T.
Call and talk to a plumber, or send the details and pick a window. Either way you get a flat-rate number before anyone turns a wrench.