What home repairs cost in Houston: how pricing works and what moves the number

Every number in this guide is a typical range, not a quote. Houston prices vary by neighborhood, by access, by the company’s overhead and by the week. Get three bids. The ranges here exist so you can tell when a bid is far outside normal.

How contractors price

Flat-rate. Most licensed plumbing, electrical and HVAC companies price from a book. Each task has a set price that includes labor, standard parts and overhead. You get the number before work starts and it does not change if the technician is slow. It can feel high on a quick fix because the book averages the easy and hard versions of the same job.

Hourly. Common with handymen, some electricians and small shops. You pay a rate per hour plus materials. Cheaper when the job goes smoothly, more expensive when it does not. Ask for an estimate of hours and a not-to-exceed number.

Per square or per unit. Roofers price per square, which is 100 square feet of roof. Foundation companies price per pier. Painters price per square foot. Fence builders price per linear foot. Compare unit prices, but also compare what the unit includes.

Trip and diagnostic fees. A trip fee pays for the truck to show up. A diagnostic fee pays for the technician to find the problem. Many companies charge one or the other, waive it if you proceed, or offer free estimates on replacement work. Always ask what you owe if you say no.

What moves the number in Houston

• Slab foundations. Most Houston homes sit on a slab. A drain or water line under the slab means tunneling or breaking concrete, which can add thousands to a repair that would be routine in a house with a crawlspace.
• Attic work in summer. Attics hit 130 degrees or more from May through September. HVAC and electrical crews work shorter shifts, which raises labor cost and stretches schedules.
• Permits and inspections. Permit fees, the time to apply, and the return trip for inspection are built into a legitimate bid. A bid that skips the permit is cheaper for that reason.
• Storms and freezes. After a freeze, every plumber in the city is booked for weeks. After a hurricane, roofers and electricians are. Prices rise, out-of-town crews arrive, and quality drops.
• Age of the house. Cast iron drains, galvanized supply lines, aluminum wiring and undersized panels in older neighborhoods turn simple jobs into replacements.
• Access and finish. A water heater in a garage costs less to replace than one in an attic. A repipe in a house with tile walls costs more than one with drywall.

Typical ranges

Typical range, get three bids. These are broad, for standard residential work in the Houston area, with permits, from a licensed company. Your house can fall outside them for good reasons.

Job	Typical range
Service call or diagnostic fee	$50 to $150, often credited to the repair
Standard tank water heater replacement, 40 to 50 gallon	$1,800 to $4,000
Tankless water heater, new install	$4,000 to $8,000
Central AC system replacement, condenser and indoor unit	$8,000 to $18,000
200-amp electrical panel upgrade	$2,500 to $6,000
Asphalt shingle re-roof, per square	$400 to $700 per square, with tear-off and basic flashing
Whole-house PEX repipe	$6,000 to $15,000 and up
Sewer line replacement	$3,000 to $15,000 and up depending on tunneling

Prices for foundation repair, pool construction, remodels and generators vary too much to give a useful range. For those, three bids is the only method.

When a bid is too low

A bid well under the others is not a bargain until you know why. The usual reasons:

• No permit, no inspection.
• Unlicensed labor or a subcontractor you have not met.
• A thinner scope. The low roof bid skips the drip edge. The low water heater bid reuses the old flue, pan and valves.
• Lower-grade materials. Builder-grade equipment, a shorter-warranty shingle, a 6-year tank instead of a 10 or 12.
• No insurance, which you will find out about when someone gets hurt on your roof.
• A storm chaser or a company that will not exist next year when the warranty matters.
• A plan to add change orders once the work is open.

Ask the low bidder to walk you through the scope line by line. A real company can explain how it is cheaper. A bad one gets vague.

When a bid is too high

A bid well over the others usually means one of these:

• A commission-based salesperson rather than a technician. High-pressure replacement pitches on AC and water heaters are the common version.
• Financing built into the price. Zero-percent financing is paid for by a higher job price.
• A scope you did not ask for. A full repipe when you asked about one leak. A new roof when you asked about one slope.
• A company that is booked solid and bidding high to see if you say yes.
• Premium equipment you did not request.

Ask what the price would be with the scope you actually described. Ask what changes if you pay without financing. If the number does not move and the explanation does not make sense, you have two other bids.

The middle bid

The middle of three bids is often right because it is usually the one with a complete scope and normal overhead. That is not a rule. Read all three. The right bid is the one with the full scope, the permit, the license you looked up and a price inside the typical range.